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 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 > 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" , 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