[Starlink] Announcing the LibreQoS Bufferbloat Test Platform

[Starlink] Announcing the LibreQoS Bufferbloat Test Platform

[Frantisek Borsik]

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Hello to all,

We're excited to announce the release of the *LibreQoS Bufferbloat Test* –
an open-source bufferbloat testing solution designed specifically for ISPs
and network operators to deploy for their customers.

*Link*
https://test.libreqos.com

*What Makes This Different*

While there are several bufferbloat testing tools available, this platform
addresses a critical gap: ISP-deployable infrastructure that provides both
traditional testing and realistic household simulation.

As Dave Täht highlighted in his influential article "What's Wrong with
Speed Tests" <https://blog.cerowrt.org/post/speedtests/>, traditional speed
tests fail to measure what users actually experience. We tried to address
Dave's points to make a better speed test that focuses on the metric that
matters: latency under load in realistic usage scenarios.

*Two Complementary Test Modes*

*Single User Test Mode*

   - Traditional sequential load testing (baseline → download → upload →
   bidirectional)
   - Measures working latency and jitter during each phase
   - Familiar A+ to F grading based on latency under load increases
   - Comparable to existing tools like DSLReports Speed Test and Waveform
   Bufferbloat Test


*Virtual Household Mode (The Innovation)*

Process-isolated simulation of 4 concurrent users with authentic traffic
patterns:

   - Alex (Gaming): 1.5 Mbps constant, jitter-sensitive for competitive
   gaming
   - Sarah (Video Conference): 2.5 Mbps bidirectional, Teams simulation
   with working latency monitoring
   - Jake (Netflix HD): 25 Mbps bursts (1s on, 4s off), realistic streaming
   patterns
   - Computer (Background): Up to 200 Mbps continuous download, system
   updates


Real-world relevance: Tests latency under load when multiple family members
are online simultaneously

Advanced grading: Network fairness, jitter measurement, and per-user
working latency analysis

*Why (not only) ISPs Need This*

*The traditional approach of sending customers to third-party speed test
sites has limitations:*

   - No control over test methodology or server placement
   - Limited correlation with customer support tickets
   - Generic results that don't reflect real-world usage patterns
   - No integration with ISP operational systems

*This platform enables (not only) ISPs to:*

   - Host their own testing infrastructure with full control
   - Integrate with support systems via telemetry APIs
   - Provide customers with realistic household testing scenarios
   - Correlate test results with network performance and customer complaints


*Open Source & Community*

The entire platform is open source and available here:
https://github.com/LibreQoE/bufferbloat_test

We've designed this to be:

   - Easy to deploy for (not only) ISPs of any size
   - Scientifically meaningful in its measurement methodology
   - Realistic in its simulation of actual household usage
   - Integrable with existing ISP operational workflows



*Community Feedback Requested*
We'd love feedback from the bufferbloat.net community on:

   - Test methodology: Are we measuring the right metrics?
   - Grading thresholds: Do our A+ to F grades align with real-world impact?
   - Virtual household scenarios: What other realistic usage patterns
   should we simulate?
   - ISP adoption: What barriers exist for ISP deployment?



*Technical Discussion*
We'd welcome discussion about:

   - Measurement accuracy for working latency and jitter in virtual
   household mode
   - Traffic pattern authenticity (gaming, video conferencing, streaming)
   - Grading methodology for latency under load in complex multi-user
   scenarios
   - Integration approaches for ISP operational systems


The platform represents our attempt to bridge the gap between academic
bufferbloat research and practical ISP operations, building on the
foundational work of researchers like Dave Täht and the broader bufferbloat
community. We believe that widespread ISP deployment of proper bufferbloat
testing infrastructure will ultimately benefit the entire internet
ecosystem.


*Looking forward to the community's thoughts and feedback!*
Best regards,

The LibreQoS Team


*In loving memory of Dave Täht: *1965-2025

https://libreqos.io/2025/04/01/in-loving-memory-of-dave/


https://www.linkedin.com/in/frantisekborsik

Signal, Telegram, WhatsApp: +421919416714

iMessage, mobile: +420775230885

Skype: casioa5302ca

frantisek.borsik@gmail.com

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Re: [Starlink] Announcing the LibreQoS Bufferbloat Test Platform

[the keyboard of geoff goodfellow]

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re: *thoughts and feedback!*

your https://test.libreqos.com tests of [Single User Test] & [Virtual
Household Mode] both give yours truly bufferbloat grades of *A+ *

whereas the https://www.waveform.com/tools/bufferbloat test gives yours
truly a bufferbloat brade grade of *C*

https://www.waveform.com/tools/bufferbloat?test-id=b13810f2-e999-4045-8e8b-ab3ab8b957c5

#1.) Why/What's the difference?

#2.) Who/Which one to believe¿

g


On Sun, Jun 15, 2025 at 4:58 AM Frantisek Borsik via Starlink <
starlink@lists.bufferbloat.net> wrote:

> Hello to all,
>
> We're excited to announce the release of the *LibreQoS Bufferbloat Test*
> – an open-source bufferbloat testing solution designed specifically for
> ISPs and network operators to deploy for their customers.
>
> *Link*
> https://test.libreqos.com
>
> *What Makes This Different*
>
> While there are several bufferbloat testing tools available, this platform
> addresses a critical gap: ISP-deployable infrastructure that provides both
> traditional testing and realistic household simulation.
>
> As Dave Täht highlighted in his influential article "What's Wrong with
> Speed Tests" <https://blog.cerowrt.org/post/speedtests/>, traditional
> speed tests fail to measure what users actually experience. We tried to
> address Dave's points to make a better speed test that focuses on the
> metric that matters: latency under load in realistic usage scenarios.
>
> *Two Complementary Test Modes*
>
> *Single User Test Mode*
>
>    - Traditional sequential load testing (baseline → download → upload →
>    bidirectional)
>    - Measures working latency and jitter during each phase
>    - Familiar A+ to F grading based on latency under load increases
>    - Comparable to existing tools like DSLReports Speed Test and Waveform
>    Bufferbloat Test
>
>
> *Virtual Household Mode (The Innovation)*
>
> Process-isolated simulation of 4 concurrent users with authentic traffic
> patterns:
>
>    - Alex (Gaming): 1.5 Mbps constant, jitter-sensitive for competitive
>    gaming
>    - Sarah (Video Conference): 2.5 Mbps bidirectional, Teams simulation
>    with working latency monitoring
>    - Jake (Netflix HD): 25 Mbps bursts (1s on, 4s off), realistic
>    streaming patterns
>    - Computer (Background): Up to 200 Mbps continuous download, system
>    updates
>
>
> Real-world relevance: Tests latency under load when multiple family
> members are online simultaneously
>
> Advanced grading: Network fairness, jitter measurement, and per-user
> working latency analysis
>
> *Why (not only) ISPs Need This*
>
> *The traditional approach of sending customers to third-party speed test
> sites has limitations:*
>
>    - No control over test methodology or server placement
>    - Limited correlation with customer support tickets
>    - Generic results that don't reflect real-world usage patterns
>    - No integration with ISP operational systems
>
> *This platform enables (not only) ISPs to:*
>
>    - Host their own testing infrastructure with full control
>    - Integrate with support systems via telemetry APIs
>    - Provide customers with realistic household testing scenarios
>    - Correlate test results with network performance and customer
>    complaints
>
>
> *Open Source & Community*
>
> The entire platform is open source and available here:
> https://github.com/LibreQoE/bufferbloat_test
>
> We've designed this to be:
>
>    - Easy to deploy for (not only) ISPs of any size
>    - Scientifically meaningful in its measurement methodology
>    - Realistic in its simulation of actual household usage
>    - Integrable with existing ISP operational workflows
>
>
>
> *Community Feedback Requested*
> We'd love feedback from the bufferbloat.net community on:
>
>    - Test methodology: Are we measuring the right metrics?
>    - Grading thresholds: Do our A+ to F grades align with real-world
>    impact?
>    - Virtual household scenarios: What other realistic usage patterns
>    should we simulate?
>    - ISP adoption: What barriers exist for ISP deployment?
>
>
>
> *Technical Discussion*
> We'd welcome discussion about:
>
>    - Measurement accuracy for working latency and jitter in virtual
>    household mode
>    - Traffic pattern authenticity (gaming, video conferencing, streaming)
>    - Grading methodology for latency under load in complex multi-user
>    scenarios
>    - Integration approaches for ISP operational systems
>
>
> The platform represents our attempt to bridge the gap between academic
> bufferbloat research and practical ISP operations, building on the
> foundational work of researchers like Dave Täht and the broader bufferbloat
> community. We believe that widespread ISP deployment of proper bufferbloat
> testing infrastructure will ultimately benefit the entire internet
> ecosystem.
>
>
> *Looking forward to the community's thoughts and feedback!*
> Best regards,
>
> The LibreQoS Team
>
>
> *In loving memory of Dave Täht: *1965-2025
>
> https://libreqos.io/2025/04/01/in-loving-memory-of-dave/
>
>
> https://www.linkedin.com/in/frantisekborsik
>
> Signal, Telegram, WhatsApp: +421919416714
>
> iMessage, mobile: +420775230885
>
> Skype: casioa5302ca
>
> frantisek.borsik@gmail.com
> _______________________________________________
> Starlink mailing list
> Starlink@lists.bufferbloat.net
> https://lists.bufferbloat.net/listinfo/starlink
>


-- 
Geoff.Goodfellow@iconia.com
living as The Truth is True

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Re: [Starlink] [Bloat] Announcing the LibreQoS Bufferbloat TestPlatform

[Nils Andreas Svee]

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Just tried it too: https://imgur.com/a/F2cNZd4, also getting A+ overall, and "only" A for bidirectional.

I seem to be getting a 200+ ms spike right at the beginning of the baseline test, which skews the results.
This happened at least on a couple of tests, but after a few tries it got better. At least with ICMP ping separately I don't see any spikes like that.

Best Regards
Nils

On Sun, Jun 15, 2025, at 23:20, the keyboard of geoff goodfellow via Bloat wrote:
> re: *thoughts and feedback!*
> 
> your https://test.libreqos.com tests of [Single User Test] & [Virtual Household Mode] both give yours truly bufferbloat grades of *A+ *
> 
> whereas the https://www.waveform.com/tools/bufferbloat test gives yours truly a bufferbloat brade grade of *C*
> 
> https://www.waveform.com/tools/bufferbloat?test-id=b13810f2-e999-4045-8e8b-ab3ab8b957c5
> 
> #1.) Why/What's the difference?
> 
> #2.) Who/Which one to believe¿
> 
> g
> 
> 
> On Sun, Jun 15, 2025 at 4:58 AM Frantisek Borsik via Starlink <starlink@lists.bufferbloat.net> wrote:
>> Hello to all,
>> 
>> We're excited to announce the release of the *LibreQoS Bufferbloat Test* – an open-source bufferbloat testing solution designed specifically for ISPs and network operators to deploy for their customers.
>> 
>> *Link*
>> https://test.libreqos.com
>> 
>> *What Makes This Different*
>> 
>> While there are several bufferbloat testing tools available, this platform addresses a critical gap: ISP-deployable infrastructure that provides both traditional testing and realistic household simulation.
>> 
>> As Dave Täht highlighted in his influential article "What's Wrong with Speed Tests" <https://blog.cerowrt.org/post/speedtests/>, traditional speed tests fail to measure what users actually experience. We tried to address Dave's points to make a better speed test that focuses on the metric that matters: latency under load in realistic usage scenarios.
>> 
>> *Two Complementary Test Modes*
>> 
>> *Single User Test Mode*
>>  • Traditional sequential load testing (baseline → download → upload → bidirectional)
>>  • Measures working latency and jitter during each phase
>>  • Familiar A+ to F grading based on latency under load increases
>>  • Comparable to existing tools like DSLReports Speed Test and Waveform Bufferbloat Test
>> 
>> *Virtual Household Mode (The Innovation)*
>> 
>> Process-isolated simulation of 4 concurrent users with authentic traffic patterns:
>>  • Alex (Gaming): 1.5 Mbps constant, jitter-sensitive for competitive gaming
>>  • Sarah (Video Conference): 2.5 Mbps bidirectional, Teams simulation with working latency monitoring
>>  • Jake (Netflix HD): 25 Mbps bursts (1s on, 4s off), realistic streaming patterns
>>  • Computer (Background): Up to 200 Mbps continuous download, system updates
>> 
>> Real-world relevance: Tests latency under load when multiple family members are online simultaneously
>> 
>> Advanced grading: Network fairness, jitter measurement, and per-user working latency analysis
>> 
>> *Why (not only) ISPs Need This*
>> 
>> *The traditional approach of sending customers to third-party speed test sites has limitations:*
>>  • No control over test methodology or server placement
>>  • Limited correlation with customer support tickets
>>  • Generic results that don't reflect real-world usage patterns
>>  • No integration with ISP operational systems
>> *This platform enables (not only) ISPs to:*
>>  • Host their own testing infrastructure with full control
>>  • Integrate with support systems via telemetry APIs
>>  • Provide customers with realistic household testing scenarios
>>  • Correlate test results with network performance and customer complaints
>> 
>> *Open Source & Community*
>> 
>> The entire platform is open source and available here: https://github.com/LibreQoE/bufferbloat_test
>> 
>> We've designed this to be:
>>  • Easy to deploy for (not only) ISPs of any size
>>  • Scientifically meaningful in its measurement methodology
>>  • Realistic in its simulation of actual household usage
>>  • Integrable with existing ISP operational workflows
>> 
>> *Community Feedback Requested
*
>> We'd love feedback from the bufferbloat.net community on:
>>  • Test methodology: Are we measuring the right metrics?
>>  • Grading thresholds: Do our A+ to F grades align with real-world impact?
>>  • Virtual household scenarios: What other realistic usage patterns should we simulate?
>>  • ISP adoption: What barriers exist for ISP deployment?
>> 
>> *Technical Discussion
*
>> We'd welcome discussion about:
>>  • Measurement accuracy for working latency and jitter in virtual household mode
>>  • Traffic pattern authenticity (gaming, video conferencing, streaming)
>>  • Grading methodology for latency under load in complex multi-user scenarios
>>  • Integration approaches for ISP operational systems
>> 
>> The platform represents our attempt to bridge the gap between academic bufferbloat research and practical ISP operations, building on the foundational work of researchers like Dave Täht and the broader bufferbloat community. We believe that widespread ISP deployment of proper bufferbloat testing infrastructure will ultimately benefit the entire internet ecosystem.
>> 
>> *Looking forward to the community's thoughts and feedback!
*
>> Best regards,
>> 
>> The LibreQoS Team
>> 
>> *__In loving memory of Dave Täht: *1965-2025
>> __https://libreqos.io/2025/04/01/in-loving-memory-of-dave/
>> 
>> https://www.linkedin.com/in/frantisekborsik____
>> Signal, Telegram, WhatsApp: +421919416714 ____
>> iMessage, mobile: +420775230885____
>> Skype: casioa5302ca____
>> frantisek.borsik@gmail.com
>> _______________________________________________
>> Starlink mailing list
>> Starlink@lists.bufferbloat.net
>> https://lists.bufferbloat.net/listinfo/starlink
> 
> 
> --
> Geoff.Goodfellow@iconia.com
> 
> living as The Truth is True
> 
> _______________________________________________
> Bloat mailing list
> Bloat@lists.bufferbloat.net
> https://lists.bufferbloat.net/listinfo/bloat
> 

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Re: [Starlink] [Cake] [Bloat] Announcing the LibreQoS Bufferbloat TestPlatform

[dave seddon]

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Very cool Frank!

When I run it, it says all of my latency is 0.0ms.  This
is firefox-139.0.1 on NixOS unstable.

I guess soem of the CORS headers are screwed up?
Cross-Origin Request Blocked: The Same Origin Policy disallows reading the
remote resource at https://test-elp.libreqos.com:8005/ping?cb=242578.
(Reason: CORS request did not succeed). Status code: (null).

I don't know, I guess you probably _do_ want these objects to be
cacheable via the CDN?

GET /ping?cb=819806 HTTP/1.1
Host: test-elp.libreqos.com:8005
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:139.0) Gecko/20100101
Firefox/139.0
Accept: */*
Accept-Language: en-US,en;q=0.5
Accept-Encoding: gzip, deflate, br, zstd
Pragma: no-cache
Cache-Control: no-store, no-cache, must-revalidate
X-Priority: high
X-Ping-Attempt: 0
Referer: https://test.libreqos.com/
Origin: https://test.libreqos.com
Connection: keep-alive
Sec-Fetch-Dest: empty
Sec-Fetch-Mode: cors
Sec-Fetch-Site: same-site

HTTP/1.1 200 OK
date: Sun, 15 Jun 2025 17:13:55 GMT
server: uvicorn
cache-control: no-store, no-cache, must-revalidate
pragma: no-cache
x-ping-server: dedicated
x-priority-processed: true
x-ping-timeouts-seen: 0
content-length: 4
content-type: text/plain; charset=utf-8
access-control-allow-origin: *
access-control-allow-credentials: true

Your Nginx server also can have caching enabled for the favorite icon, and
the javascript, which should make it faster to load.

HTTP/2 200
server: nginx/1.18.0 (Ubuntu)
date: Sun, 15 Jun 2025 17:13:35 GMT
content-type: text/javascript; charset=utf-8
vary: Accept-Encoding
last-modified: Tue, 10 Jun 2025 04:28:53 GMT
strict-transport-security: max-age=63072000
x-content-type-options: nosniff
x-frame-options: SAMEORIGIN
content-encoding: gzip
X-Firefox-Spdy: h2

I've found that you can set the caching for the CORS "preflight" requests
too and it definitely helps. e.g. access-control-max-age 345600

On Sun, Jun 15, 2025 at 9:53 AM Nils Andreas Svee via Cake <
cake@lists.bufferbloat.net> wrote:

> Just tried it too: https://imgur.com/a/F2cNZd4, also getting A+ overall,
> and "only" A for bidirectional.
>
> I seem to be getting a 200+ ms spike right at the beginning of the
> baseline test, which skews the results.
> This happened at least on a couple of tests, but after a few tries it got
> better. At least with ICMP ping separately I don't see any spikes like that.
>
> Best Regards
> Nils
>
> On Sun, Jun 15, 2025, at 23:20, the keyboard of geoff goodfellow via Bloat
> wrote:
>
> re: *thoughts and feedback!*
>
> your https://test.libreqos.com tests of [Single User Test] & [Virtual
> Household Mode] both give yours truly bufferbloat grades of *A+ *
>
> whereas the https://www.waveform.com/tools/bufferbloat test gives yours
> truly a bufferbloat brade grade of *C*
>
>
> https://www.waveform.com/tools/bufferbloat?test-id=b13810f2-e999-4045-8e8b-ab3ab8b957c5
>
> #1.) Why/What's the difference?
>
> #2.) Who/Which one to believe¿
>
> g
>
>
> On Sun, Jun 15, 2025 at 4:58 AM Frantisek Borsik via Starlink <
> starlink@lists.bufferbloat.net> wrote:
>
> Hello to all,
>
> We're excited to announce the release of the *LibreQoS Bufferbloat Test*
> – an open-source bufferbloat testing solution designed specifically for
> ISPs and network operators to deploy for their customers.
>
> *Link*
> https://test.libreqos.com
>
> *What Makes This Different*
>
> While there are several bufferbloat testing tools available, this platform
> addresses a critical gap: ISP-deployable infrastructure that provides both
> traditional testing and realistic household simulation.
>
> As Dave Täht highlighted in his influential article "What's Wrong with
> Speed Tests" <https://blog.cerowrt.org/post/speedtests/>, traditional
> speed tests fail to measure what users actually experience. We tried to
> address Dave's points to make a better speed test that focuses on the
> metric that matters: latency under load in realistic usage scenarios.
>
> *Two Complementary Test Modes*
>
> *Single User Test Mode*
>
>    - Traditional sequential load testing (baseline → download → upload →
>    bidirectional)
>    - Measures working latency and jitter during each phase
>    - Familiar A+ to F grading based on latency under load increases
>    - Comparable to existing tools like DSLReports Speed Test and Waveform
>    Bufferbloat Test
>
>
> *Virtual Household Mode (The Innovation)*
>
> Process-isolated simulation of 4 concurrent users with authentic traffic
> patterns:
>
>    - Alex (Gaming): 1.5 Mbps constant, jitter-sensitive for competitive
>    gaming
>    - Sarah (Video Conference): 2.5 Mbps bidirectional, Teams simulation
>    with working latency monitoring
>    - Jake (Netflix HD): 25 Mbps bursts (1s on, 4s off), realistic
>    streaming patterns
>    - Computer (Background): Up to 200 Mbps continuous download, system
>    updates
>
>
> Real-world relevance: Tests latency under load when multiple family
> members are online simultaneously
>
> Advanced grading: Network fairness, jitter measurement, and per-user
> working latency analysis
>
> *Why (not only) ISPs Need This*
>
> *The traditional approach of sending customers to third-party speed test
> sites has limitations:*
>
>    - No control over test methodology or server placement
>    - Limited correlation with customer support tickets
>    - Generic results that don't reflect real-world usage patterns
>    - No integration with ISP operational systems
>
> *This platform enables (not only) ISPs to:*
>
>    - Host their own testing infrastructure with full control
>    - Integrate with support systems via telemetry APIs
>    - Provide customers with realistic household testing scenarios
>    - Correlate test results with network performance and customer
>    complaints
>
>
> *Open Source & Community*
>
> The entire platform is open source and available here:
> https://github.com/LibreQoE/bufferbloat_test
>
> We've designed this to be:
>
>    - Easy to deploy for (not only) ISPs of any size
>    - Scientifically meaningful in its measurement methodology
>    - Realistic in its simulation of actual household usage
>    - Integrable with existing ISP operational workflows
>
>
>
> *Community Feedback Requested*
> We'd love feedback from the bufferbloat.net community on:
>
>    - Test methodology: Are we measuring the right metrics?
>    - Grading thresholds: Do our A+ to F grades align with real-world
>    impact?
>    - Virtual household scenarios: What other realistic usage patterns
>    should we simulate?
>    - ISP adoption: What barriers exist for ISP deployment?
>
>
>
> *Technical Discussion*
> We'd welcome discussion about:
>
>    - Measurement accuracy for working latency and jitter in virtual
>    household mode
>    - Traffic pattern authenticity (gaming, video conferencing, streaming)
>    - Grading methodology for latency under load in complex multi-user
>    scenarios
>    - Integration approaches for ISP operational systems
>
>
> The platform represents our attempt to bridge the gap between academic
> bufferbloat research and practical ISP operations, building on the
> foundational work of researchers like Dave Täht and the broader bufferbloat
> community. We believe that widespread ISP deployment of proper bufferbloat
> testing infrastructure will ultimately benefit the entire internet
> ecosystem.
>
>
> *Looking forward to the community's thoughts and feedback!*
> Best regards,
>
> The LibreQoS Team
>
>
> *In loving memory of Dave Täht: *1965-2025
>
> https://libreqos.io/2025/04/01/in-loving-memory-of-dave/
>
>
> https://www.linkedin.com/in/frantisekborsik
>
> Signal, Telegram, WhatsApp: +421919416714
>
> iMessage, mobile: +420775230885
>
> Skype: casioa5302ca
>
> frantisek.borsik@gmail.com
> _______________________________________________
> Starlink mailing list
> Starlink@lists.bufferbloat.net
> https://lists.bufferbloat.net/listinfo/starlink
>
>
>
> --
> Geoff.Goodfellow@iconia.com
>
> living as The Truth is True
>
> _______________________________________________
> Bloat mailing list
> Bloat@lists.bufferbloat.net
> https://lists.bufferbloat.net/listinfo/bloat
>
>
> _______________________________________________
> Cake mailing list
> Cake@lists.bufferbloat.net
> https://lists.bufferbloat.net/listinfo/cake
>


-- 
Regards,
Dave Seddon
+1 415 857 5102

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Re: [Starlink] [Cake] [Bloat] Announcing the LibreQoS Bufferbloat TestPlatform

[Robert Chacón]

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Nils,

I've now fixed the issue where the initial latency spike skews baseline
results by switching to using 75th percentile for baseline calculation.
Thanks for catching that.

Geoff,

I may have fixed that now. Our Vultr VPS was hitting its bandwidth limit
apparently, and they throttled it. Switched to hosting it locally in El
Paso as fast as I could. Now tests can achieve saturation throughput.

Dave,

If you try it again does it still fail to ping currently?

Thanks,
Robert

On Sun, Jun 15, 2025 at 11:32 AM dave seddon <dave.seddon.ca@gmail.com>
wrote:

> Very cool Frank!
>
> When I run it, it says all of my latency is 0.0ms.  This
> is firefox-139.0.1 on NixOS unstable.
>
> I guess soem of the CORS headers are screwed up?
> Cross-Origin Request Blocked: The Same Origin Policy disallows reading the
> remote resource at https://test-elp.libreqos.com:8005/ping?cb=242578.
> (Reason: CORS request did not succeed). Status code: (null).
>
> I don't know, I guess you probably _do_ want these objects to be
> cacheable via the CDN?
>
> GET /ping?cb=819806 HTTP/1.1
> Host: test-elp.libreqos.com:8005
> User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:139.0) Gecko/20100101
> Firefox/139.0
> Accept: */*
> Accept-Language: en-US,en;q=0.5
> Accept-Encoding: gzip, deflate, br, zstd
> Pragma: no-cache
> Cache-Control: no-store, no-cache, must-revalidate
> X-Priority: high
> X-Ping-Attempt: 0
> Referer: https://test.libreqos.com/
> Origin: https://test.libreqos.com
> Connection: keep-alive
> Sec-Fetch-Dest: empty
> Sec-Fetch-Mode: cors
> Sec-Fetch-Site: same-site
>
> HTTP/1.1 200 OK
> date: Sun, 15 Jun 2025 17:13:55 GMT
> server: uvicorn
> cache-control: no-store, no-cache, must-revalidate
> pragma: no-cache
> x-ping-server: dedicated
> x-priority-processed: true
> x-ping-timeouts-seen: 0
> content-length: 4
> content-type: text/plain; charset=utf-8
> access-control-allow-origin: *
> access-control-allow-credentials: true
>
> Your Nginx server also can have caching enabled for the favorite icon, and
> the javascript, which should make it faster to load.
>
> HTTP/2 200
> server: nginx/1.18.0 (Ubuntu)
> date: Sun, 15 Jun 2025 17:13:35 GMT
> content-type: text/javascript; charset=utf-8
> vary: Accept-Encoding
> last-modified: Tue, 10 Jun 2025 04:28:53 GMT
> strict-transport-security: max-age=63072000
> x-content-type-options: nosniff
> x-frame-options: SAMEORIGIN
> content-encoding: gzip
> X-Firefox-Spdy: h2
>
> I've found that you can set the caching for the CORS "preflight" requests
> too and it definitely helps. e.g. access-control-max-age 345600
>
> On Sun, Jun 15, 2025 at 9:53 AM Nils Andreas Svee via Cake <
> cake@lists.bufferbloat.net> wrote:
>
>> Just tried it too: https://imgur.com/a/F2cNZd4, also getting A+ overall,
>> and "only" A for bidirectional.
>>
>> I seem to be getting a 200+ ms spike right at the beginning of the
>> baseline test, which skews the results.
>> This happened at least on a couple of tests, but after a few tries it got
>> better. At least with ICMP ping separately I don't see any spikes like that.
>>
>> Best Regards
>> Nils
>>
>> On Sun, Jun 15, 2025, at 23:20, the keyboard of geoff goodfellow via
>> Bloat wrote:
>>
>> re: *thoughts and feedback!*
>>
>> your https://test.libreqos.com tests of [Single User Test] & [Virtual
>> Household Mode] both give yours truly bufferbloat grades of *A+ *
>>
>> whereas the https://www.waveform.com/tools/bufferbloat test gives yours
>> truly a bufferbloat brade grade of *C*
>>
>>
>> https://www.waveform.com/tools/bufferbloat?test-id=b13810f2-e999-4045-8e8b-ab3ab8b957c5
>>
>> #1.) Why/What's the difference?
>>
>> #2.) Who/Which one to believe¿
>>
>> g
>>
>>
>> On Sun, Jun 15, 2025 at 4:58 AM Frantisek Borsik via Starlink <
>> starlink@lists.bufferbloat.net> wrote:
>>
>> Hello to all,
>>
>> We're excited to announce the release of the *LibreQoS Bufferbloat Test*
>> – an open-source bufferbloat testing solution designed specifically for
>> ISPs and network operators to deploy for their customers.
>>
>> *Link*
>> https://test.libreqos.com
>>
>> *What Makes This Different*
>>
>> While there are several bufferbloat testing tools available, this
>> platform addresses a critical gap: ISP-deployable infrastructure that
>> provides both traditional testing and realistic household simulation.
>>
>> As Dave Täht highlighted in his influential article "What's Wrong with
>> Speed Tests" <https://blog.cerowrt.org/post/speedtests/>, traditional
>> speed tests fail to measure what users actually experience. We tried to
>> address Dave's points to make a better speed test that focuses on the
>> metric that matters: latency under load in realistic usage scenarios.
>>
>> *Two Complementary Test Modes*
>>
>> *Single User Test Mode*
>>
>>    - Traditional sequential load testing (baseline → download → upload →
>>    bidirectional)
>>    - Measures working latency and jitter during each phase
>>    - Familiar A+ to F grading based on latency under load increases
>>    - Comparable to existing tools like DSLReports Speed Test and
>>    Waveform Bufferbloat Test
>>
>>
>> *Virtual Household Mode (The Innovation)*
>>
>> Process-isolated simulation of 4 concurrent users with authentic traffic
>> patterns:
>>
>>    - Alex (Gaming): 1.5 Mbps constant, jitter-sensitive for competitive
>>    gaming
>>    - Sarah (Video Conference): 2.5 Mbps bidirectional, Teams simulation
>>    with working latency monitoring
>>    - Jake (Netflix HD): 25 Mbps bursts (1s on, 4s off), realistic
>>    streaming patterns
>>    - Computer (Background): Up to 200 Mbps continuous download, system
>>    updates
>>
>>
>> Real-world relevance: Tests latency under load when multiple family
>> members are online simultaneously
>>
>> Advanced grading: Network fairness, jitter measurement, and per-user
>> working latency analysis
>>
>> *Why (not only) ISPs Need This*
>>
>> *The traditional approach of sending customers to third-party speed test
>> sites has limitations:*
>>
>>    - No control over test methodology or server placement
>>    - Limited correlation with customer support tickets
>>    - Generic results that don't reflect real-world usage patterns
>>    - No integration with ISP operational systems
>>
>> *This platform enables (not only) ISPs to:*
>>
>>    - Host their own testing infrastructure with full control
>>    - Integrate with support systems via telemetry APIs
>>    - Provide customers with realistic household testing scenarios
>>    - Correlate test results with network performance and customer
>>    complaints
>>
>>
>> *Open Source & Community*
>>
>> The entire platform is open source and available here:
>> https://github.com/LibreQoE/bufferbloat_test
>>
>> We've designed this to be:
>>
>>    - Easy to deploy for (not only) ISPs of any size
>>    - Scientifically meaningful in its measurement methodology
>>    - Realistic in its simulation of actual household usage
>>    - Integrable with existing ISP operational workflows
>>
>>
>>
>> *Community Feedback Requested*
>> We'd love feedback from the bufferbloat.net community on:
>>
>>    - Test methodology: Are we measuring the right metrics?
>>    - Grading thresholds: Do our A+ to F grades align with real-world
>>    impact?
>>    - Virtual household scenarios: What other realistic usage patterns
>>    should we simulate?
>>    - ISP adoption: What barriers exist for ISP deployment?
>>
>>
>>
>> *Technical Discussion*
>> We'd welcome discussion about:
>>
>>    - Measurement accuracy for working latency and jitter in virtual
>>    household mode
>>    - Traffic pattern authenticity (gaming, video conferencing, streaming)
>>    - Grading methodology for latency under load in complex multi-user
>>    scenarios
>>    - Integration approaches for ISP operational systems
>>
>>
>> The platform represents our attempt to bridge the gap between academic
>> bufferbloat research and practical ISP operations, building on the
>> foundational work of researchers like Dave Täht and the broader bufferbloat
>> community. We believe that widespread ISP deployment of proper bufferbloat
>> testing infrastructure will ultimately benefit the entire internet
>> ecosystem.
>>
>>
>> *Looking forward to the community's thoughts and feedback!*
>> Best regards,
>>
>> The LibreQoS Team
>>
>>
>> *In loving memory of Dave Täht: *1965-2025
>>
>> https://libreqos.io/2025/04/01/in-loving-memory-of-dave/
>>
>>
>> https://www.linkedin.com/in/frantisekborsik
>>
>> Signal, Telegram, WhatsApp: +421919416714
>>
>> iMessage, mobile: +420775230885
>>
>> Skype: casioa5302ca
>>
>> frantisek.borsik@gmail.com
>> _______________________________________________
>> Starlink mailing list
>> Starlink@lists.bufferbloat.net
>> https://lists.bufferbloat.net/listinfo/starlink
>>
>>
>>
>> --
>> Geoff.Goodfellow@iconia.com
>>
>> living as The Truth is True
>>
>> _______________________________________________
>> Bloat mailing list
>> Bloat@lists.bufferbloat.net
>> https://lists.bufferbloat.net/listinfo/bloat
>>
>>
>> _______________________________________________
>> Cake mailing list
>> Cake@lists.bufferbloat.net
>> https://lists.bufferbloat.net/listinfo/cake
>>
>
>
> --
> Regards,
> Dave Seddon
> +1 415 857 5102
>


-- 

ROBERT CHACÓN

FOUNDER

+1-915-730-1472

LibreQoS.com

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Re: [Starlink] [Cake] [Bloat] Announcing the LibreQoS Bufferbloat TestPlatform

[dave seddon]

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Works now!  Thanks

[image: image.png]
[image: image.png]

... Not sure why my latency is so high though.  I'm ~13-16ms from downtown
LA.  I'm using fq_codel, cos the unifi firewall doesn't do cake

[image: image.png]


On Sun, Jun 15, 2025 at 11:05 AM Robert Chacón <robert@libreqos.io> wrote:

> Nils,
>
> I've now fixed the issue where the initial latency spike skews baseline
> results by switching to using 75th percentile for baseline calculation.
> Thanks for catching that.
>
> Geoff,
>
> I may have fixed that now. Our Vultr VPS was hitting its bandwidth limit
> apparently, and they throttled it. Switched to hosting it locally in El
> Paso as fast as I could. Now tests can achieve saturation throughput.
>
> Dave,
>
> If you try it again does it still fail to ping currently?
>
> Thanks,
> Robert
>
> On Sun, Jun 15, 2025 at 11:32 AM dave seddon <dave.seddon.ca@gmail.com>
> wrote:
>
>> Very cool Frank!
>>
>> When I run it, it says all of my latency is 0.0ms.  This
>> is firefox-139.0.1 on NixOS unstable.
>>
>> I guess soem of the CORS headers are screwed up?
>> Cross-Origin Request Blocked: The Same Origin Policy disallows reading
>> the remote resource at https://test-elp.libreqos.com:8005/ping?cb=242578.
>> (Reason: CORS request did not succeed). Status code: (null).
>>
>> I don't know, I guess you probably _do_ want these objects to be
>> cacheable via the CDN?
>>
>> GET /ping?cb=819806 HTTP/1.1
>> Host: test-elp.libreqos.com:8005
>> User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:139.0) Gecko/20100101
>> Firefox/139.0
>> Accept: */*
>> Accept-Language: en-US,en;q=0.5
>> Accept-Encoding: gzip, deflate, br, zstd
>> Pragma: no-cache
>> Cache-Control: no-store, no-cache, must-revalidate
>> X-Priority: high
>> X-Ping-Attempt: 0
>> Referer: https://test.libreqos.com/
>> Origin: https://test.libreqos.com
>> Connection: keep-alive
>> Sec-Fetch-Dest: empty
>> Sec-Fetch-Mode: cors
>> Sec-Fetch-Site: same-site
>>
>> HTTP/1.1 200 OK
>> date: Sun, 15 Jun 2025 17:13:55 GMT
>> server: uvicorn
>> cache-control: no-store, no-cache, must-revalidate
>> pragma: no-cache
>> x-ping-server: dedicated
>> x-priority-processed: true
>> x-ping-timeouts-seen: 0
>> content-length: 4
>> content-type: text/plain; charset=utf-8
>> access-control-allow-origin: *
>> access-control-allow-credentials: true
>>
>> Your Nginx server also can have caching enabled for the favorite icon,
>> and the javascript, which should make it faster to load.
>>
>> HTTP/2 200
>> server: nginx/1.18.0 (Ubuntu)
>> date: Sun, 15 Jun 2025 17:13:35 GMT
>> content-type: text/javascript; charset=utf-8
>> vary: Accept-Encoding
>> last-modified: Tue, 10 Jun 2025 04:28:53 GMT
>> strict-transport-security: max-age=63072000
>> x-content-type-options: nosniff
>> x-frame-options: SAMEORIGIN
>> content-encoding: gzip
>> X-Firefox-Spdy: h2
>>
>> I've found that you can set the caching for the CORS "preflight" requests
>> too and it definitely helps. e.g. access-control-max-age 345600
>>
>> On Sun, Jun 15, 2025 at 9:53 AM Nils Andreas Svee via Cake <
>> cake@lists.bufferbloat.net> wrote:
>>
>>> Just tried it too: https://imgur.com/a/F2cNZd4, also getting A+
>>> overall, and "only" A for bidirectional.
>>>
>>> I seem to be getting a 200+ ms spike right at the beginning of the
>>> baseline test, which skews the results.
>>> This happened at least on a couple of tests, but after a few tries it
>>> got better. At least with ICMP ping separately I don't see any spikes like
>>> that.
>>>
>>> Best Regards
>>> Nils
>>>
>>> On Sun, Jun 15, 2025, at 23:20, the keyboard of geoff goodfellow via
>>> Bloat wrote:
>>>
>>> re: *thoughts and feedback!*
>>>
>>> your https://test.libreqos.com tests of [Single User Test] & [Virtual
>>> Household Mode] both give yours truly bufferbloat grades of *A+ *
>>>
>>> whereas the https://www.waveform.com/tools/bufferbloat test gives yours
>>> truly a bufferbloat brade grade of *C*
>>>
>>>
>>> https://www.waveform.com/tools/bufferbloat?test-id=b13810f2-e999-4045-8e8b-ab3ab8b957c5
>>>
>>> #1.) Why/What's the difference?
>>>
>>> #2.) Who/Which one to believe¿
>>>
>>> g
>>>
>>>
>>> On Sun, Jun 15, 2025 at 4:58 AM Frantisek Borsik via Starlink <
>>> starlink@lists.bufferbloat.net> wrote:
>>>
>>> Hello to all,
>>>
>>> We're excited to announce the release of the *LibreQoS Bufferbloat Test*
>>> – an open-source bufferbloat testing solution designed specifically for
>>> ISPs and network operators to deploy for their customers.
>>>
>>> *Link*
>>> https://test.libreqos.com
>>>
>>> *What Makes This Different*
>>>
>>> While there are several bufferbloat testing tools available, this
>>> platform addresses a critical gap: ISP-deployable infrastructure that
>>> provides both traditional testing and realistic household simulation.
>>>
>>> As Dave Täht highlighted in his influential article "What's Wrong with
>>> Speed Tests" <https://blog.cerowrt.org/post/speedtests/>, traditional
>>> speed tests fail to measure what users actually experience. We tried to
>>> address Dave's points to make a better speed test that focuses on the
>>> metric that matters: latency under load in realistic usage scenarios.
>>>
>>> *Two Complementary Test Modes*
>>>
>>> *Single User Test Mode*
>>>
>>>    - Traditional sequential load testing (baseline → download → upload
>>>    → bidirectional)
>>>    - Measures working latency and jitter during each phase
>>>    - Familiar A+ to F grading based on latency under load increases
>>>    - Comparable to existing tools like DSLReports Speed Test and
>>>    Waveform Bufferbloat Test
>>>
>>>
>>> *Virtual Household Mode (The Innovation)*
>>>
>>> Process-isolated simulation of 4 concurrent users with authentic traffic
>>> patterns:
>>>
>>>    - Alex (Gaming): 1.5 Mbps constant, jitter-sensitive for competitive
>>>    gaming
>>>    - Sarah (Video Conference): 2.5 Mbps bidirectional, Teams simulation
>>>    with working latency monitoring
>>>    - Jake (Netflix HD): 25 Mbps bursts (1s on, 4s off), realistic
>>>    streaming patterns
>>>    - Computer (Background): Up to 200 Mbps continuous download, system
>>>    updates
>>>
>>>
>>> Real-world relevance: Tests latency under load when multiple family
>>> members are online simultaneously
>>>
>>> Advanced grading: Network fairness, jitter measurement, and per-user
>>> working latency analysis
>>>
>>> *Why (not only) ISPs Need This*
>>>
>>> *The traditional approach of sending customers to third-party speed test
>>> sites has limitations:*
>>>
>>>    - No control over test methodology or server placement
>>>    - Limited correlation with customer support tickets
>>>    - Generic results that don't reflect real-world usage patterns
>>>    - No integration with ISP operational systems
>>>
>>> *This platform enables (not only) ISPs to:*
>>>
>>>    - Host their own testing infrastructure with full control
>>>    - Integrate with support systems via telemetry APIs
>>>    - Provide customers with realistic household testing scenarios
>>>    - Correlate test results with network performance and customer
>>>    complaints
>>>
>>>
>>> *Open Source & Community*
>>>
>>> The entire platform is open source and available here:
>>> https://github.com/LibreQoE/bufferbloat_test
>>>
>>> We've designed this to be:
>>>
>>>    - Easy to deploy for (not only) ISPs of any size
>>>    - Scientifically meaningful in its measurement methodology
>>>    - Realistic in its simulation of actual household usage
>>>    - Integrable with existing ISP operational workflows
>>>
>>>
>>>
>>> *Community Feedback Requested*
>>> We'd love feedback from the bufferbloat.net community on:
>>>
>>>    - Test methodology: Are we measuring the right metrics?
>>>    - Grading thresholds: Do our A+ to F grades align with real-world
>>>    impact?
>>>    - Virtual household scenarios: What other realistic usage patterns
>>>    should we simulate?
>>>    - ISP adoption: What barriers exist for ISP deployment?
>>>
>>>
>>>
>>> *Technical Discussion*
>>> We'd welcome discussion about:
>>>
>>>    - Measurement accuracy for working latency and jitter in virtual
>>>    household mode
>>>    - Traffic pattern authenticity (gaming, video conferencing,
>>>    streaming)
>>>    - Grading methodology for latency under load in complex multi-user
>>>    scenarios
>>>    - Integration approaches for ISP operational systems
>>>
>>>
>>> The platform represents our attempt to bridge the gap between academic
>>> bufferbloat research and practical ISP operations, building on the
>>> foundational work of researchers like Dave Täht and the broader bufferbloat
>>> community. We believe that widespread ISP deployment of proper bufferbloat
>>> testing infrastructure will ultimately benefit the entire internet
>>> ecosystem.
>>>
>>>
>>> *Looking forward to the community's thoughts and feedback!*
>>> Best regards,
>>>
>>> The LibreQoS Team
>>>
>>>
>>> *In loving memory of Dave Täht: *1965-2025
>>>
>>> https://libreqos.io/2025/04/01/in-loving-memory-of-dave/
>>>
>>>
>>> https://www.linkedin.com/in/frantisekborsik
>>>
>>> Signal, Telegram, WhatsApp: +421919416714
>>>
>>> iMessage, mobile: +420775230885
>>>
>>> Skype: casioa5302ca
>>>
>>> frantisek.borsik@gmail.com
>>> _______________________________________________
>>> Starlink mailing list
>>> Starlink@lists.bufferbloat.net
>>> https://lists.bufferbloat.net/listinfo/starlink
>>>
>>>
>>>
>>> --
>>> Geoff.Goodfellow@iconia.com
>>>
>>> living as The Truth is True
>>>
>>> _______________________________________________
>>> Bloat mailing list
>>> Bloat@lists.bufferbloat.net
>>> https://lists.bufferbloat.net/listinfo/bloat
>>>
>>>
>>> _______________________________________________
>>> Cake mailing list
>>> Cake@lists.bufferbloat.net
>>> https://lists.bufferbloat.net/listinfo/cake
>>>
>>
>>
>> --
>> Regards,
>> Dave Seddon
>> +1 415 857 5102
>>
>
>
> --
>
> ROBERT CHACÓN
>
> FOUNDER
>
> +1-915-730-1472
>
> LibreQoS.com
>
>
>

-- 
Regards,
Dave Seddon
+1 415 857 5102

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Re: [Starlink] Announcing the LibreQoS Bufferbloat Test Platform

[J Pan]

depending on where the test server is? better if isp/cdn providers can
host such tests too
--
J Pan, UVic CSc, ECS566, 250-472-5796 (NO VM), Pan@UVic.CA, Web.UVic.CA/~pan

On Sun, Jun 15, 2025 at 9:21 AM the keyboard of geoff goodfellow via
Starlink <starlink@lists.bufferbloat.net> wrote:
>
> re: thoughts and feedback!
>
> your https://test.libreqos.com tests of [Single User Test] & [Virtual Household Mode] both give yours truly bufferbloat grades of A+
>
> whereas the https://www.waveform.com/tools/bufferbloat test gives yours truly a bufferbloat brade grade of C
>
> https://www.waveform.com/tools/bufferbloat?test-id=b13810f2-e999-4045-8e8b-ab3ab8b957c5
>
> #1.) Why/What's the difference?
>
> #2.) Who/Which one to believe¿
>
> g
>
>
> On Sun, Jun 15, 2025 at 4:58 AM Frantisek Borsik via Starlink <starlink@lists.bufferbloat.net> wrote:
>>
>> Hello to all,
>>
>> We're excited to announce the release of the LibreQoS Bufferbloat Test – an open-source bufferbloat testing solution designed specifically for ISPs and network operators to deploy for their customers.
>>
>> Link
>> https://test.libreqos.com
>>
>> What Makes This Different
>>
>> While there are several bufferbloat testing tools available, this platform addresses a critical gap: ISP-deployable infrastructure that provides both traditional testing and realistic household simulation.
>>
>> As Dave Täht highlighted in his influential article "What's Wrong with Speed Tests", traditional speed tests fail to measure what users actually experience. We tried to address Dave's points to make a better speed test that focuses on the metric that matters: latency under load in realistic usage scenarios.
>>
>> Two Complementary Test Modes
>>
>> Single User Test Mode
>>
>> Traditional sequential load testing (baseline → download → upload → bidirectional)
>> Measures working latency and jitter during each phase
>> Familiar A+ to F grading based on latency under load increases
>> Comparable to existing tools like DSLReports Speed Test and Waveform Bufferbloat Test
>>
>>
>> Virtual Household Mode (The Innovation)
>>
>> Process-isolated simulation of 4 concurrent users with authentic traffic patterns:
>>
>> Alex (Gaming): 1.5 Mbps constant, jitter-sensitive for competitive gaming
>> Sarah (Video Conference): 2.5 Mbps bidirectional, Teams simulation with working latency monitoring
>> Jake (Netflix HD): 25 Mbps bursts (1s on, 4s off), realistic streaming patterns
>> Computer (Background): Up to 200 Mbps continuous download, system updates
>>
>>
>> Real-world relevance: Tests latency under load when multiple family members are online simultaneously
>>
>> Advanced grading: Network fairness, jitter measurement, and per-user working latency analysis
>>
>> Why (not only) ISPs Need This
>>
>> The traditional approach of sending customers to third-party speed test sites has limitations:
>>
>> No control over test methodology or server placement
>> Limited correlation with customer support tickets
>> Generic results that don't reflect real-world usage patterns
>> No integration with ISP operational systems
>>
>> This platform enables (not only) ISPs to:
>>
>> Host their own testing infrastructure with full control
>> Integrate with support systems via telemetry APIs
>> Provide customers with realistic household testing scenarios
>> Correlate test results with network performance and customer complaints
>>
>>
>> Open Source & Community
>>
>> The entire platform is open source and available here: https://github.com/LibreQoE/bufferbloat_test
>>
>> We've designed this to be:
>>
>> Easy to deploy for (not only) ISPs of any size
>> Scientifically meaningful in its measurement methodology
>> Realistic in its simulation of actual household usage
>> Integrable with existing ISP operational workflows
>>
>>
>> Community Feedback Requested
>>
>> We'd love feedback from the bufferbloat.net community on:
>>
>> Test methodology: Are we measuring the right metrics?
>> Grading thresholds: Do our A+ to F grades align with real-world impact?
>> Virtual household scenarios: What other realistic usage patterns should we simulate?
>> ISP adoption: What barriers exist for ISP deployment?
>>
>>
>> Technical Discussion
>>
>> We'd welcome discussion about:
>>
>> Measurement accuracy for working latency and jitter in virtual household mode
>> Traffic pattern authenticity (gaming, video conferencing, streaming)
>> Grading methodology for latency under load in complex multi-user scenarios
>> Integration approaches for ISP operational systems
>>
>>
>> The platform represents our attempt to bridge the gap between academic bufferbloat research and practical ISP operations, building on the foundational work of researchers like Dave Täht and the broader bufferbloat community. We believe that widespread ISP deployment of proper bufferbloat testing infrastructure will ultimately benefit the entire internet ecosystem.
>>
>> Looking forward to the community's thoughts and feedback!
>>
>> Best regards,
>>
>> The LibreQoS Team
>>
>>
>> In loving memory of Dave Täht: 1965-2025
>>
>> https://libreqos.io/2025/04/01/in-loving-memory-of-dave/
>>
>>
>> https://www.linkedin.com/in/frantisekborsik
>>
>> Signal, Telegram, WhatsApp: +421919416714
>>
>> iMessage, mobile: +420775230885
>>
>> Skype: casioa5302ca
>>
>> frantisek.borsik@gmail.com
>>
>> _______________________________________________
>> Starlink mailing list
>> Starlink@lists.bufferbloat.net
>> https://lists.bufferbloat.net/listinfo/starlink
>
>
>
> --
> Geoff.Goodfellow@iconia.com
> living as The Truth is True
>
> _______________________________________________
> Starlink mailing list
> Starlink@lists.bufferbloat.net
> https://lists.bufferbloat.net/listinfo/starlink

Re: [Starlink] [Bloat] Announcing the LibreQoS Bufferbloat Test Platform

[Michael Richardson]

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Hi, thanks for this.
I've share it with multiple ISP (suppliers), and maybe there is a reason to
deploy it within CREDIL's R&D datacenter.

>   - Grading methodology for latency under load in complex multi-user
>   scenarios

Perhaps, it would be good to have a RIPE BCOP as a result for the criteria?

>We believe that widespread ISP deployment of proper bufferbloat
>testing infrastructure will ultimately benefit the entire internet
>ecosystem.

I'm reading the README.md from the git repo. Wow. Amazing job!
I'm not seeing a CLI option to run the client test, but I see lots of API
end-points, so I'm guessing that there might be one, or it might easy to do
this.

--
]               Never tell me the odds!                 | ipv6 mesh networks [
]   Michael Richardson, Sandelman Software Works        |    IoT architect   [
]     mcr@sandelman.ca  http://www.sandelman.ca/        |   ruby on rails    [





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Re: [Starlink] [Cake] Announcing the LibreQoS Bufferbloat Test Platform

[David P. Reed]

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I plan to test this out as "being my own ISP" using one of my personal cloud servers that is in one of Vultur's hosting sites as the server. (and from various mobile devices as I travel around among WiFi sites, if I can).
 
The thing I immediately want to know, though, is: has anybody done a serious security review of the system? I'm a "trust but verify" kind of personality. I don't have the energy or time to do the detailed review. I trust that the folks who built this are not black hats - you're my "friends" after all - we care about similar things. But I'd like to verify that trust.
 
Also, any suggestions people might have with regard to making it work?
 
I'll send feedback as I explore, promise! Great work!
 
David
 
 
On Sunday, June 15, 2025 08:00, "Frantisek Borsik via Cake" <cake@lists.bufferbloat.net> said:




Hello to all,

We're excited to announce the release of the LibreQoS Bufferbloat Test – an open-source bufferbloat testing solution designed specifically for ISPs and network operators to deploy for their customers.

Link
[ https://test.libreqos.com ]( https://test.libreqos.com )

What Makes This Different

While there are several bufferbloat testing tools available, this platform addresses a critical gap: ISP-deployable infrastructure that provides both traditional testing and realistic household simulation.

As Dave Täht highlighted in his influential article [ "What's Wrong with Speed Tests" ]( https://blog.cerowrt.org/post/speedtests/ ), traditional speed tests fail to measure what users actually experience. We tried to address Dave's points to make a better speed test that focuses on the metric that matters: latency under load in realistic usage scenarios.

Two Complementary Test Modes

Single User Test Mode

Traditional sequential load testing (baseline → download → upload → bidirectional)
Measures working latency and jitter during each phase
Familiar A+ to F grading based on latency under load increases
Comparable to existing tools like DSLReports Speed Test and Waveform Bufferbloat Test
Virtual Household Mode (The Innovation)

Process-isolated simulation of 4 concurrent users with authentic traffic patterns:

Alex (Gaming): 1.5 Mbps constant, jitter-sensitive for competitive gaming
Sarah (Video Conference): 2.5 Mbps bidirectional, Teams simulation with working latency monitoring
Jake (Netflix HD): 25 Mbps bursts (1s on, 4s off), realistic streaming patterns
Computer (Background): Up to 200 Mbps continuous download, system updates
Real-world relevance: Tests latency under load when multiple family members are online simultaneously

Advanced grading: Network fairness, jitter measurement, and per-user working latency analysis

Why (not only) ISPs Need This

The traditional approach of sending customers to third-party speed test sites has limitations:

No control over test methodology or server placement
Limited correlation with customer support tickets
Generic results that don't reflect real-world usage patterns
No integration with ISP operational systemsThis platform enables (not only) ISPs to:

Host their own testing infrastructure with full control
Integrate with support systems via telemetry APIs
Provide customers with realistic household testing scenarios
Correlate test results with network performance and customer complaints
Open Source & Community

The entire platform is open source and available here: [ https://github.com/LibreQoE/bufferbloat_test ]( https://github.com/LibreQoE/bufferbloat_test )

We've designed this to be:

Easy to deploy for (not only) ISPs of any size
Scientifically meaningful in its measurement methodology
Realistic in its simulation of actual household usage
Integrable with existing ISP operational workflows
Community Feedback Requested

We'd love feedback from the [ bufferbloat.net ]( http://bufferbloat.net ) community on:

Test methodology: Are we measuring the right metrics?
Grading thresholds: Do our A+ to F grades align with real-world impact?
Virtual household scenarios: What other realistic usage patterns should we simulate?
ISP adoption: What barriers exist for ISP deployment?
Technical Discussion

We'd welcome discussion about:

Measurement accuracy for working latency and jitter in virtual household mode
Traffic pattern authenticity (gaming, video conferencing, streaming)
Grading methodology for latency under load in complex multi-user scenarios
Integration approaches for ISP operational systems
The platform represents our attempt to bridge the gap between academic bufferbloat research and practical ISP operations, building on the foundational work of researchers like Dave Täht and the broader bufferbloat community. We believe that widespread ISP deployment of proper bufferbloat testing infrastructure will ultimately benefit the entire internet ecosystem.

Looking forward to the community's thoughts and feedback!

Best regards,

The LibreQoS Team











 
In loving memory of Dave Täht: 1965-2025
[ https://libreqos.io/2025/04/01/in-loving-memory-of-dave/ ]( https://libreqos.io/2025/04/01/in-loving-memory-of-dave/ )
 
[ https://www.linkedin.com/in/frantisekborsik ]( https://www.linkedin.com/in/frantisekborsik )
Signal, Telegram, WhatsApp: +421919416714 
iMessage, mobile: +420775230885
Skype: casioa5302ca
[ frantisek.borsik@gmail.com ]( mailto:frantisek.borsik@gmail.com )

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Re: [Starlink] [Bloat] Announcing the LibreQoS Bufferbloat Test Platform

[jf]

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First, a huge thank you for this excellent tool; the field needed this one.

Secondly, kudos for giving a nod to our late friend, Dave Taht. My face lit up when I saw the thumbs-up icon on the A+ result!
I instantly recognized him. Thank you so much for this; well done.



My household test result



Cheers,

Jonathan Foulkes

> On Jun 15, 2025, at 8:00 AM, Frantisek Borsik via Bloat <bloat@lists.bufferbloat.net> wrote:
> 
> Hello to all,
> 
> We're excited to announce the release of the LibreQoS Bufferbloat Test – an open-source bufferbloat testing solution designed specifically for ISPs and network operators to deploy for their customers.
> 
> Link
> https://test.libreqos.com <https://test.libreqos.com/>
> 
> What Makes This Different
> 
> While there are several bufferbloat testing tools available, this platform addresses a critical gap: ISP-deployable infrastructure that provides both traditional testing and realistic household simulation.
> 
> As Dave Täht highlighted in his influential article "What's Wrong with Speed Tests" <https://blog.cerowrt.org/post/speedtests/>, traditional speed tests fail to measure what users actually experience. We tried to address Dave's points to make a better speed test that focuses on the metric that matters: latency under load in realistic usage scenarios.
> 
> Two Complementary Test Modes
> 
> Single User Test Mode
> Traditional sequential load testing (baseline → download → upload → bidirectional)
> Measures working latency and jitter during each phase
> Familiar A+ to F grading based on latency under load increases
> Comparable to existing tools like DSLReports Speed Test and Waveform Bufferbloat Test
> 
> Virtual Household Mode (The Innovation)
> 
> Process-isolated simulation of 4 concurrent users with authentic traffic patterns:
> Alex (Gaming): 1.5 Mbps constant, jitter-sensitive for competitive gaming
> Sarah (Video Conference): 2.5 Mbps bidirectional, Teams simulation with working latency monitoring
> Jake (Netflix HD): 25 Mbps bursts (1s on, 4s off), realistic streaming patterns
> Computer (Background): Up to 200 Mbps continuous download, system updates
> 
> Real-world relevance: Tests latency under load when multiple family members are online simultaneously
> 
> Advanced grading: Network fairness, jitter measurement, and per-user working latency analysis
> 
> Why (not only) ISPs Need This
> 
> The traditional approach of sending customers to third-party speed test sites has limitations:
> No control over test methodology or server placement
> Limited correlation with customer support tickets
> Generic results that don't reflect real-world usage patterns
> No integration with ISP operational systems
> This platform enables (not only) ISPs to:
> Host their own testing infrastructure with full control
> Integrate with support systems via telemetry APIs
> Provide customers with realistic household testing scenarios
> Correlate test results with network performance and customer complaints
> 
> Open Source & Community
> 
> The entire platform is open source and available here: https://github.com/LibreQoE/bufferbloat_test
> 
> We've designed this to be:
> Easy to deploy for (not only) ISPs of any size
> Scientifically meaningful in its measurement methodology
> Realistic in its simulation of actual household usage
> Integrable with existing ISP operational workflows
> 
> Community Feedback Requested
> 
> We'd love feedback from the bufferbloat.net <http://bufferbloat.net/> community on:
> Test methodology: Are we measuring the right metrics?
> Grading thresholds: Do our A+ to F grades align with real-world impact?
> Virtual household scenarios: What other realistic usage patterns should we simulate?
> ISP adoption: What barriers exist for ISP deployment?
> 
> Technical Discussion
> 
> We'd welcome discussion about:
> Measurement accuracy for working latency and jitter in virtual household mode
> Traffic pattern authenticity (gaming, video conferencing, streaming)
> Grading methodology for latency under load in complex multi-user scenarios
> Integration approaches for ISP operational systems
> 
> The platform represents our attempt to bridge the gap between academic bufferbloat research and practical ISP operations, building on the foundational work of researchers like Dave Täht and the broader bufferbloat community. We believe that widespread ISP deployment of proper bufferbloat testing infrastructure will ultimately benefit the entire internet ecosystem.
> 
> Looking forward to the community's thoughts and feedback!
> 
> Best regards,
> 
> The LibreQoS Team
> 
> 
> In loving memory of Dave Täht: 1965-2025
> 
> https://libreqos.io/2025/04/01/in-loving-memory-of-dave/
> 
> 
> 
> https://www.linkedin.com/in/frantisekborsik
> 
> Signal, Telegram, WhatsApp: +421919416714 
> 
> iMessage, mobile: +420775230885
> 
> Skype: casioa5302ca
> 
> frantisek.borsik@gmail.com <mailto:frantisek.borsik@gmail.com>_______________________________________________
> Bloat mailing list
> Bloat@lists.bufferbloat.net
> https://lists.bufferbloat.net/listinfo/bloat


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