[Starlink] ookla's latest speedtest app does latency under load

Tue Jun 7 07:13:15 EDT 2022

Hi Brennen,

Thanks for being so forward with measurement details!
Do you know how the Ookla test computes jitter? Is it the regular average
of inter-packet delay variation?

On Wed, 18 May 2022 at 15:30, Brennen Smith <brennen at ookla.com> wrote:

> Don’t worry - result pages are in progress 👍
>
> On Wed, May 18, 2022 at 06:26 Livingood, Jason <
> Jason_Livingood at comcast.com> wrote:
>
>> Brennan – It’d also be nice to be able to visit
>> https://www.speedtest.net/result/i/5118600624 and expand/see the working
>> latency numbers that Luis has below in his results image. 😊
>>
>>
>>
>> Jason
>>
>>
>>
>> *From: *Starlink <starlink-bounces at lists.bufferbloat.net> on behalf of
>> "Luis A. Cornejo" <luis.a.cornejo at gmail.com>
>> *Date: *Tuesday, May 17, 2022 at 11:43
>> *To: *"Möller, Sebastian" <SMoeller at dpz.eu>
>> *Cc: *"starlink at lists.bufferbloat.net" <starlink at lists.bufferbloat.net>,
>> Brennen Smith <brennen at ookla.com>
>> *Subject: *Re: [Starlink] ookla's latest speedtest app does latency
>> under load
>>
>>
>>
>> Square dishy. North of Houston, speeds have been subpar recently compared
>> to initial setup in late March (100+/10+). My cell is probably saturated
>> considering my latitude, bird density, and possibly base station.
>>
>>
>>
>> https://www.speedtest.net/my-result/i/5118600624
>> <https://urldefense.com/v3/__https:/www.speedtest.net/my-result/i/5118600624__;!!CQl3mcHX2A!ClDU9i5pldSBSrF1P2XIBsAEW10bCIDyoWP37dbqvXLqw_6ldzK4fq4pP1OyFSQoStkfmeGLAqrLqS6OEDgsDTJQYmOWd0Q$>
>>
>>
>>
>>
>>
>>
>>
>> On Fri, May 13, 2022 at 2:09 PM Möller, Sebastian <SMoeller at dpz.eu>
>> wrote:
>>
>> Hi Brennan,
>>
>>
>>
>> really cool stuff!
>>
>>
>>
>>
>> On May 13, 2022, at 01:35, Brennen Smith <brennen at ookla.com> wrote:
>>
>> Hey all,
>>
>> Here's some details about the final figures:
>>
>> 1. Loaded latency is simply an extension of the latency stage - same
>> methodology and medium
>>
>>
>>
>> Where could I find a technical description of that method?
>>
>>
>>
>> 2. We use a "warmed up" TCP connection for latency
>>
>>
>>
>> Is that one of the load bearing flows or a non load bearing parallel flow
>> that has successfully finished the TCP handshake?
>>
>>
>>
>> 3. We use the interquartile mean for the "displayed value"
>>
>>
>>
>> I wonder whether reporting something like a 95 or 99% quantiles (so
>> either 1& and 99%, or 5% and 95%) in addition to min and max and
>> interquartile mean would be possible? And since you use the 25 and 75%
>> values already, maybe these as well?
>>
>>
>>
>> Awesome seeing those numbers in the wild and looking forward to bringing
>> more awareness to this issue.
>>
>>
>>
>> For sure, so far many discussions about debugging/reducing bufferbloat
>> started with people wanting to use the ubiquitious speedtest.nat nodes
>> (where finding a close by one typically is easy/possible); and now this
>> will actually work (assuming they use Android or iOS clients).
>>
>>
>>
>> Question: will the apps for the other OSs as well as the CLI and the web
>> version also be changed to include these numbers in the foreseeable future?
>>
>>
>>
>>
>>
>> Kind Regards
>>
>> Sebastian
>>
>>
>>
>>
>>
>>
>> Cheers,
>>
>> Brennen Smith
>>
>>
>> VP Technology
>>
>> (206) 739-0807 | brennen at ookla.com
>> linkedin.com/in/brennensmith
>> <https://urldefense.com/v3/__http:/linkedin.com/in/brennensmith__;!!CQl3mcHX2A!ClDU9i5pldSBSrF1P2XIBsAEW10bCIDyoWP37dbqvXLqw_6ldzK4fq4pP1OyFSQoStkfmeGLAqrLqS6OEDgsDTJQ34tQA8k$>
>>
>>
>> On Thu, May 12, 2022 at 4:18 PM Dave Taht <dave.taht at gmail.com> wrote:
>> Yea. peak 2500ms latency on download, 600ms on upload, that's about
>> right. :/ The upload figure appears to be a bit lower (better) than what I
>> measured 1 year ago, here (for the 30 or so new subscribers on this list,
>> this was why I started it):
>> https://docs.google.com/document/d/1puRjUVxJ6cCv-rgQ_zn-jWZU9ae0jZbFATLf4PQKblM/edit
>> <https://urldefense.com/v3/__https:/docs.google.com/document/d/1puRjUVxJ6cCv-rgQ_zn-jWZU9ae0jZbFATLf4PQKblM/edit__;!!CQl3mcHX2A!ClDU9i5pldSBSrF1P2XIBsAEW10bCIDyoWP37dbqvXLqw_6ldzK4fq4pP1OyFSQoStkfmeGLAqrLqS6OEDgsDTJQ2nOLusM$>
>>
>> I don't know if ookla are throwing out arp related stuff, or using the
>> 99th percentile to calculate the final figure. I hope to learn more about
>> their calculations in the coming weeks.
>>
>> I do keep hoping we can get more updated flent data over longer intervals
>> than 20s. With starlink changing their allocation scheme every 15s, what
>> number do you pick?
>>
>> And like I said, some packet caps of this app would be good, too.
>>
>>
>>
>> On Thu, May 12, 2022 at 4:07 PM Nathan Owens <nathan at nathan.io> wrote:
>> Here's a test I did today:
>> https://www.speedtest.net/my-result/i/5112435305
>> <https://urldefense.com/v3/__https:/www.speedtest.net/my-result/i/5112435305__;!!CQl3mcHX2A!ClDU9i5pldSBSrF1P2XIBsAEW10bCIDyoWP37dbqvXLqw_6ldzK4fq4pP1OyFSQoStkfmeGLAqrLqS6OEDgsDTJQCvQ4gHo$>
>>
>>
>>
>>
>>
>> On Thu, May 12, 2022 at 4:04 PM Dave Taht <dave.taht at gmail.com> wrote:
>> Ookla has just put out an ios and android app that also continuously
>> measures latency under load.
>>
>> I'm interested in calibrating the results of that vs a vs flent
>> benchmarks verses starlink. Can someone here give this a shot? More
>> details here:
>>
>>
>> https://www.ookla.com/articles/introducing-loaded-latency
>> <https://urldefense.com/v3/__https:/www.ookla.com/articles/introducing-loaded-latency__;!!CQl3mcHX2A!ClDU9i5pldSBSrF1P2XIBsAEW10bCIDyoWP37dbqvXLqw_6ldzK4fq4pP1OyFSQoStkfmeGLAqrLqS6OEDgsDTJQtzzxpG8$>
>>
>> IDEALLY, this would be over wifi -> starlink , with a packet capture
>> in the middle. But I'd settle for a few test results from starlink
>> folk of this new app, first.
>>
>> --
>> FQ World Domination pending:
>> https://blog.cerowrt.org/post/state_of_fq_codel/
>> <https://urldefense.com/v3/__https:/blog.cerowrt.org/post/state_of_fq_codel/__;!!CQl3mcHX2A!ClDU9i5pldSBSrF1P2XIBsAEW10bCIDyoWP37dbqvXLqw_6ldzK4fq4pP1OyFSQoStkfmeGLAqrLqS6OEDgsDTJQK32Qzo4$>
>> Dave Täht CEO, TekLibre, LLC
>> _______________________________________________
>> Starlink mailing list
>> Starlink at lists.bufferbloat.net
>> https://lists.bufferbloat.net/listinfo/starlink
>> <https://urldefense.com/v3/__https:/lists.bufferbloat.net/listinfo/starlink__;!!CQl3mcHX2A!ClDU9i5pldSBSrF1P2XIBsAEW10bCIDyoWP37dbqvXLqw_6ldzK4fq4pP1OyFSQoStkfmeGLAqrLqS6OEDgsDTJQt5PBt6o$>
>>
>>
>> --
>> FQ World Domination pending:
>> https://blog.cerowrt.org/post/state_of_fq_codel/
>> <https://urldefense.com/v3/__https:/blog.cerowrt.org/post/state_of_fq_codel/__;!!CQl3mcHX2A!ClDU9i5pldSBSrF1P2XIBsAEW10bCIDyoWP37dbqvXLqw_6ldzK4fq4pP1OyFSQoStkfmeGLAqrLqS6OEDgsDTJQK32Qzo4$>
>> Dave Täht CEO, TekLibre, LLC
>>
>>
>> This email, its contents and attachments contain information from Ziff
>> Davis, Inc. and/or its affiliates which may be privileged, confidential or
>> otherwise protected from disclosure. The information is intended to be for
>> the addressee(s) only. If you are not an addressee, any disclosure, copy,
>> distribution or use of the contents of this message is prohibited. If you
>> have received this email in error, please notify the sender by reply email
>> and delete the original message and any copies.
>> _______________________________________________
>> Starlink mailing list
>> Starlink at lists.bufferbloat.net
>> https://lists.bufferbloat.net/listinfo/starlink
>> <https://urldefense.com/v3/__https:/lists.bufferbloat.net/listinfo/starlink__;!!CQl3mcHX2A!ClDU9i5pldSBSrF1P2XIBsAEW10bCIDyoWP37dbqvXLqw_6ldzK4fq4pP1OyFSQoStkfmeGLAqrLqS6OEDgsDTJQt5PBt6o$>
>>
>>
>>
>> _______________________________________________
>> Starlink mailing list
>> Starlink at lists.bufferbloat.net
>> https://lists.bufferbloat.net/listinfo/starlink
>> <https://urldefense.com/v3/__https:/lists.bufferbloat.net/listinfo/starlink__;!!CQl3mcHX2A!ClDU9i5pldSBSrF1P2XIBsAEW10bCIDyoWP37dbqvXLqw_6ldzK4fq4pP1OyFSQoStkfmeGLAqrLqS6OEDgsDTJQt5PBt6o$>
>>
>> --
>
> Brennen Smith VP Technology
>
> (206) 739-0807 | brennen at ookla.com
>
> linkedin.com/in/brennensmith <https://www.linkedin.com/in/brennensmith/>
>
> ------------------------------
>
> This email, its contents and attachments contain information from Ziff
> Davis, Inc. and/or its affiliates which may be privileged, confidential or
> otherwise protected from disclosure. The information is intended to be for
> the addressee(s) only. If you are not an addressee, any disclosure, copy,
> distribution or use of the contents of this message is prohibited. If you
> have received this email in error, please notify the sender by reply email
> and delete the original message and any copies.
> _______________________________________________
> Starlink mailing list
> Starlink at lists.bufferbloat.net
> https://lists.bufferbloat.net/listinfo/starlink
>

-- 
Bjørn Ivar Teigen
Head of Research
+47 47335952 | bjorn at domos.no <name at domos.no> | www.domos.no
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.bufferbloat.net/private/starlink/attachments/20220607/0fd738d1/attachment-0001.html>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: image001.jpg
Type: image/jpeg
Size: 188465 bytes
Desc: not available
URL: <https://lists.bufferbloat.net/private/starlink/attachments/20220607/0fd738d1/attachment-0002.jpg>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: image002.jpg
Type: image/jpeg
Size: 82379 bytes
Desc: not available
URL: <https://lists.bufferbloat.net/private/starlink/attachments/20220607/0fd738d1/attachment-0003.jpg>