* [Cake] STEAM tcp algo from CDN? @ 2021-03-09 7:35 Taraldsen Erik 2021-03-09 20:20 ` Dave Taht 0 siblings, 1 reply; 6+ messages in thread From: Taraldsen Erik @ 2021-03-09 7:35 UTC (permalink / raw) To: Toke Høiland-Jørgensen via Cake [-- Attachment #1: Type: text/plain, Size: 83 bytes --] Does anybody here know what tcp algo STEAM uses for download of games? -Erik [-- Attachment #2: Type: text/html, Size: 488 bytes --] ^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [Cake] STEAM tcp algo from CDN? 2021-03-09 7:35 [Cake] STEAM tcp algo from CDN? Taraldsen Erik @ 2021-03-09 20:20 ` Dave Taht 2021-03-09 23:14 ` Jonathan Morton 0 siblings, 1 reply; 6+ messages in thread From: Dave Taht @ 2021-03-09 20:20 UTC (permalink / raw) To: Taraldsen Erik; +Cc: Toke Høiland-Jørgensen via Cake 10-20 flows, cubic, last I looked. It's ugly. Begged them... in person... in oregon... to stop. On Tue, Mar 9, 2021 at 11:41 AM Taraldsen Erik <erik.taraldsen@telenor.no> wrote: > > Does anybody here know what tcp algo STEAM uses for download of games? > > > -Erik > > _______________________________________________ > Cake mailing list > Cake@lists.bufferbloat.net > https://lists.bufferbloat.net/listinfo/cake -- "For a successful technology, reality must take precedence over public relations, for Mother Nature cannot be fooled" - Richard Feynman dave@taht.net <Dave Täht> CTO, TekLibre, LLC Tel: 1-831-435-0729 ^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [Cake] STEAM tcp algo from CDN? 2021-03-09 20:20 ` Dave Taht @ 2021-03-09 23:14 ` Jonathan Morton 2021-03-10 0:31 ` Nils Andreas Svee 0 siblings, 1 reply; 6+ messages in thread From: Jonathan Morton @ 2021-03-09 23:14 UTC (permalink / raw) To: Dave Taht; +Cc: Taraldsen Erik, Toke Høiland-Jørgensen via Cake > On 9 Mar, 2021, at 10:20 pm, Dave Taht <dave.taht@gmail.com> wrote: > > 10-20 flows, cubic, last I looked. It's ugly. I can't confirm CUBIC from here, but it seems to be 4-8 flows in parallel now. Latency to the national CDN is about 22ms over LTE, so it's hard to distinguish CUBIC from anything else in particular; in this range it would look a lot like NewReno. It seems to shut down each flow and start a fresh one after about a minute. It does have ECN enabled and seems to be producing CWR flags in response at the correct times. With this small a BDP (I've throttled down quite hard due to the amount of videoconferencing I'm doing at peak hours this week), it quickly ends up getting CE marks on almost every data segment. This is actually fine, since it's then controlled nicely by ack-clocking and FQ. - Jonathan Morton ^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [Cake] STEAM tcp algo from CDN? 2021-03-09 23:14 ` Jonathan Morton @ 2021-03-10 0:31 ` Nils Andreas Svee 2021-03-10 0:57 ` Dave Taht 0 siblings, 1 reply; 6+ messages in thread From: Nils Andreas Svee @ 2021-03-10 0:31 UTC (permalink / raw) To: Jonathan Morton, Dave Taht Cc: Toke Høiland-Jørgensen via Cake, Taraldsen Erik On Wed, 2021-03-10 at 01:14 +0200, Jonathan Morton wrote: > > On 9 Mar, 2021, at 10:20 pm, Dave Taht <dave.taht@gmail.com> wrote: > > > > 10-20 flows, cubic, last I looked. It's ugly. > > I can't confirm CUBIC from here, but it seems to be 4-8 flows in > parallel now. Latency to the national CDN is about 22ms over LTE, so > it's hard to distinguish CUBIC from anything else in particular; in > this range it would look a lot like NewReno. It seems to shut down > each flow and start a fresh one after about a minute. Seeing somewhere between 8-16 here I believe. IIRC I've seen you mention being located in Finland, if so we're probably on the same datacenter in Stockholm. The flows are probably not lasting long because the downloads are split into chunks, which according to my logs are at most 1 MB. Patches seem to work differently, those can be much larger (logs shows the largest one the past months was 137 MB, depends on the game I assume). -- Best Regards, Nils ^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [Cake] STEAM tcp algo from CDN? 2021-03-10 0:31 ` Nils Andreas Svee @ 2021-03-10 0:57 ` Dave Taht 2021-03-10 7:04 ` Taraldsen Erik 0 siblings, 1 reply; 6+ messages in thread From: Dave Taht @ 2021-03-10 0:57 UTC (permalink / raw) To: Nils Andreas Svee Cc: Jonathan Morton, Toke Høiland-Jørgensen via Cake, Taraldsen Erik I would really like them to use less flows - or BBR started up separately with a 200+ms interval between starts would be good.... On Tue, Mar 9, 2021 at 4:31 PM Nils Andreas Svee <me@lochnair.net> wrote: > > On Wed, 2021-03-10 at 01:14 +0200, Jonathan Morton wrote: > > > On 9 Mar, 2021, at 10:20 pm, Dave Taht <dave.taht@gmail.com> wrote: > > > > > > 10-20 flows, cubic, last I looked. It's ugly. > > > > I can't confirm CUBIC from here, but it seems to be 4-8 flows in > > parallel now. Latency to the national CDN is about 22ms over LTE, so > > it's hard to distinguish CUBIC from anything else in particular; in > > this range it would look a lot like NewReno. It seems to shut down > > each flow and start a fresh one after about a minute. > Seeing somewhere between 8-16 here I believe. IIRC I've seen you > mention being located in Finland, if so we're probably on the same > datacenter in Stockholm. > > The flows are probably not lasting long because the downloads are split > into chunks, which according to my logs are at most 1 MB. Patches seem > to work differently, those can be much larger (logs shows the largest > one the past months was 137 MB, depends on the game I assume). > > -- > Best Regards, > Nils > -- "For a successful technology, reality must take precedence over public relations, for Mother Nature cannot be fooled" - Richard Feynman dave@taht.net <Dave Täht> CTO, TekLibre, LLC Tel: 1-831-435-0729 ^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [Cake] STEAM tcp algo from CDN? 2021-03-10 0:57 ` Dave Taht @ 2021-03-10 7:04 ` Taraldsen Erik 0 siblings, 0 replies; 6+ messages in thread From: Taraldsen Erik @ 2021-03-10 7:04 UTC (permalink / raw) To: Dave Taht, Nils Andreas Svee Cc: Jonathan Morton, Toke Høiland-Jørgensen via Cake [-- Attachment #1: Type: text/plain, Size: 1870 bytes --] So to summarize, not quite certain which tcp algo they use. But everyone seems to agree that Steam does whatever they can to jam the pipe full ________________________________ Fra: Dave Taht <dave.taht@gmail.com> Sendt: onsdag 10. mars 2021 01.57.09 Til: Nils Andreas Svee Kopi: Jonathan Morton; Toke Høiland-Jørgensen via Cake; Taraldsen Erik Emne: Re: [Cake] STEAM tcp algo from CDN? I would really like them to use less flows - or BBR started up separately with a 200+ms interval between starts would be good.... On Tue, Mar 9, 2021 at 4:31 PM Nils Andreas Svee <me@lochnair.net> wrote: > > On Wed, 2021-03-10 at 01:14 +0200, Jonathan Morton wrote: > > > On 9 Mar, 2021, at 10:20 pm, Dave Taht <dave.taht@gmail.com> wrote: > > > > > > 10-20 flows, cubic, last I looked. It's ugly. > > > > I can't confirm CUBIC from here, but it seems to be 4-8 flows in > > parallel now. Latency to the national CDN is about 22ms over LTE, so > > it's hard to distinguish CUBIC from anything else in particular; in > > this range it would look a lot like NewReno. It seems to shut down > > each flow and start a fresh one after about a minute. > Seeing somewhere between 8-16 here I believe. IIRC I've seen you > mention being located in Finland, if so we're probably on the same > datacenter in Stockholm. > > The flows are probably not lasting long because the downloads are split > into chunks, which according to my logs are at most 1 MB. Patches seem > to work differently, those can be much larger (logs shows the largest > one the past months was 137 MB, depends on the game I assume). > > -- > Best Regards, > Nils > -- "For a successful technology, reality must take precedence over public relations, for Mother Nature cannot be fooled" - Richard Feynman dave@taht.net <Dave Täht> CTO, TekLibre, LLC Tel: 1-831-435-0729 [-- Attachment #2: Type: text/html, Size: 3121 bytes --] ^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2021-03-10 7:04 UTC | newest] Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2021-03-09 7:35 [Cake] STEAM tcp algo from CDN? Taraldsen Erik 2021-03-09 20:20 ` Dave Taht 2021-03-09 23:14 ` Jonathan Morton 2021-03-10 0:31 ` Nils Andreas Svee 2021-03-10 0:57 ` Dave Taht 2021-03-10 7:04 ` Taraldsen Erik
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