Re: [Bloat] "BBR" TCP patches submitted to linux kernel

2016-12-06 Thread Bernd Paysan
Am Donnerstag, 27. Oktober 2016 20:14:42 UTC+2 schrieb Dave Taht: > > On Thu, Oct 27, 2016 at 10:57 AM, Yuchung Cheng > wrote: > Well, against cubic on the same link in single queue mode, even > without ecn, life looks like this: > > >

Re: [Bloat] "BBR" TCP patches submitted to linux kernel

2016-10-27 Thread Ingemar Johansson S
> From: Eric Dumazet <eric.duma...@gmail.com> > To: Dave Taht <dave.t...@gmail.com> > Cc: "Steinar H. Gunderson" <sgunder...@bigfoot.com>, bloat > <bloat@lists.bufferbloat.net> > Subject: Re: [Bloat] "BBR" TCP patches submitted to linux

Re: [Bloat] "BBR" TCP patches submitted to linux kernel

2016-10-27 Thread Dave Taht
On Thu, Oct 27, 2016 at 10:57 AM, Yuchung Cheng wrote: > On Thu, Oct 27, 2016 at 10:33 AM, Dave Taht wrote: >> On Thu, Oct 27, 2016 at 10:04 AM, Steinar H. Gunderson >> wrote: >>> On Fri, Oct 21, 2016 at 10:47:26AM +0200, Steinar

Re: [Bloat] "BBR" TCP patches submitted to linux kernel

2016-10-27 Thread Dave Taht
On Thu, Oct 27, 2016 at 10:52 AM, Eric Dumazet wrote: > On Thu, 2016-10-27 at 10:33 -0700, Dave Taht wrote: > >> At the moment my biggest beef with BBR is that it ignores ECN entirely >> (and yet negotiates it). > > Note that switching cubic to any other CC like BBR is

Re: [Bloat] "BBR" TCP patches submitted to linux kernel

2016-10-27 Thread Eric Dumazet
On Thu, 2016-10-27 at 10:33 -0700, Dave Taht wrote: > At the moment my biggest beef with BBR is that it ignores ECN entirely > (and yet negotiates it). Note that switching cubic to any other CC like BBR is allowed at any time, way after ECN was negotiated. So BBR can not solve the issue you

Re: [Bloat] "BBR" TCP patches submitted to linux kernel

2016-10-27 Thread Dave Taht
On Thu, Oct 27, 2016 at 10:04 AM, Steinar H. Gunderson wrote: > On Fri, Oct 21, 2016 at 10:47:26AM +0200, Steinar H. Gunderson wrote: >> As a random data point, I tried a single flow from my main server in .no >> to my backup server in .nl and compared CUBIC (with sch_fq)

Re: [Bloat] "BBR" TCP patches submitted to linux kernel

2016-10-27 Thread Eric Dumazet
On Thu, 2016-10-27 at 19:04 +0200, Steinar H. Gunderson wrote: > On Fri, Oct 21, 2016 at 10:47:26AM +0200, Steinar H. Gunderson wrote: > > As a random data point, I tried a single flow from my main server in .no > > to my backup server in .nl and compared CUBIC (with sch_fq) to BBR > > (naturally

Re: [Bloat] "BBR" TCP patches submitted to linux kernel

2016-10-27 Thread Steinar H. Gunderson
On Fri, Oct 21, 2016 at 10:47:26AM +0200, Steinar H. Gunderson wrote: > As a random data point, I tried a single flow from my main server in .no > to my backup server in .nl and compared CUBIC (with sch_fq) to BBR (naturally > also in sch_fq) on the sender side. The results were quite consistent

Re: [Bloat] "BBR" TCP patches submitted to linux kernel

2016-10-21 Thread Steinar H. Gunderson
On Fri, Oct 21, 2016 at 04:40:13AM -0700, Eric Dumazet wrote: > Yet it looks like they are few drops on this link, which is nice ;) I believe the two ISPs peer directly on AMS-IX, so it's pretty good, yes. /* Steinar */ -- Homepage: https://www.sesse.net/

Re: [Bloat] "BBR" TCP patches submitted to linux kernel

2016-10-21 Thread Eric Dumazet
On Fri, 2016-10-21 at 13:03 +0200, Steinar H. Gunderson wrote: > On Fri, Oct 21, 2016 at 03:52:24AM -0700, Eric Dumazet wrote: > > Ok, you could try 12 MB instead of 8MB to eventually reach line rate. > > > > net/ipv4/tcp_rmem = 4096 873814 1200 > > net/ipv4/tcp_wmem = 4096 873814 1200 >

Re: [Bloat] "BBR" TCP patches submitted to linux kernel

2016-10-21 Thread Steinar H. Gunderson
On Fri, Oct 21, 2016 at 03:52:24AM -0700, Eric Dumazet wrote: > Ok, you could try 12 MB instead of 8MB to eventually reach line rate. > > net/ipv4/tcp_rmem = 4096 873814 1200 > net/ipv4/tcp_wmem = 4096 873814 1200 No difference, really. (I tried increasing both at the server and the

Re: [Bloat] "BBR" TCP patches submitted to linux kernel

2016-10-21 Thread Eric Dumazet
On Fri, 2016-10-21 at 12:47 +0200, Steinar H. Gunderson wrote: > On Fri, Oct 21, 2016 at 12:42:17PM +0200, Steinar H. Gunderson wrote: > > Perhaps it's time to kill them, but I don't know what the defaults are :-) > > If it matters (for autotuning), the host has 64 GB of physical RAM. I am

Re: [Bloat] "BBR" TCP patches submitted to linux kernel

2016-10-21 Thread Eric Dumazet
On Fri, 2016-10-21 at 12:42 +0200, Steinar H. Gunderson wrote: > On Fri, Oct 21, 2016 at 03:28:01AM -0700, Eric Dumazet wrote: > > Could you provide /proc/sys/net/ipv4/tcp_rmem > > and /proc/sys/net/ipv4/tcp_wmem values on your server ? > > I see I have old sysctl.conf settings here, from tuning

Re: [Bloat] "BBR" TCP patches submitted to linux kernel

2016-10-21 Thread Zhen Cao
On Sat, Sep 17, 2016 at 5:04 AM, Dave Taht wrote: > I'm really looking forward to trying them out and reading the upcoming > paper. > Has the upcoming paper come? Many thanks. zhen ___ Bloat mailing list

Re: [Bloat] "BBR" TCP patches submitted to linux kernel

2016-10-21 Thread Steinar H. Gunderson
On Fri, Oct 21, 2016 at 12:42:17PM +0200, Steinar H. Gunderson wrote: > Perhaps it's time to kill them, but I don't know what the defaults are :-) If it matters (for autotuning), the host has 64 GB of physical RAM. /* Steinar */ -- Homepage: https://www.sesse.net/

Re: [Bloat] "BBR" TCP patches submitted to linux kernel

2016-10-21 Thread Steinar H. Gunderson
On Fri, Oct 21, 2016 at 03:28:01AM -0700, Eric Dumazet wrote: > Could you provide /proc/sys/net/ipv4/tcp_rmem > and /proc/sys/net/ipv4/tcp_wmem values on your server ? I see I have old sysctl.conf settings here, from tuning way back in the 2.6 era: net/core/rmem_max = 8738140

Re: [Bloat] "BBR" TCP patches submitted to linux kernel

2016-10-21 Thread Eric Dumazet
On Fri, 2016-10-21 at 10:47 +0200, Steinar H. Gunderson wrote: > On Fri, Sep 16, 2016 at 02:04:37PM -0700, Dave Taht wrote: > > I'm really looking forward to trying them out and reading the upcoming > > paper. > > > > https://patchwork.ozlabs.org/patch/671069/ > > As a random data point, I

Re: [Bloat] "BBR" TCP patches submitted to linux kernel

2016-10-21 Thread Steinar H. Gunderson
On Fri, Sep 16, 2016 at 02:04:37PM -0700, Dave Taht wrote: > I'm really looking forward to trying them out and reading the upcoming paper. > > https://patchwork.ozlabs.org/patch/671069/ As a random data point, I tried a single flow from my main server in .no to my backup server in .nl and

Re: [Bloat] "BBR" TCP patches submitted to linux kernel

2016-10-20 Thread Eric Dumazet
Yeah, team is excited ! But really I am a small contributor in this work (mostly reviewing patches) Neal, Van, Yuchung and Soheil really worked hard on it. On Fri, Sep 16, 2016 at 2:11 PM, Steinar H. Gunderson wrote: > On Fri, Sep 16, 2016 at 02:04:37PM -0700, Dave

Re: [Bloat] "BBR" TCP patches submitted to linux kernel

2016-09-30 Thread Aaron Wood
On Fri, Sep 30, 2016 at 1:12 AM, Mikael Abrahamsson wrote: > On Thu, 29 Sep 2016, Aaron Wood wrote: > > While you think 3.10 is old, in my experience it's still seen as cutting >> edge by many. RHEL is still only at 3.10. And routers are using much >> older 3.x kernels.

Re: [Bloat] "BBR" TCP patches submitted to linux kernel

2016-09-30 Thread Mikael Abrahamsson
On Thu, 29 Sep 2016, Aaron Wood wrote: While you think 3.10 is old, in my experience it's still seen as cutting edge by many. RHEL is still only at 3.10. And routers are using much older 3.x kernels. There's a huge lag between what the "enterprise" crowd is running in production, and what

Re: [Bloat] "BBR" TCP patches submitted to linux kernel

2016-09-29 Thread Aaron Wood
On Thu, Sep 29, 2016 at 8:50 PM, Dave Täht wrote: > > > Android is still shipping linux 3.10? How... quaint. > > > > Since this is mobile, I'm pretty sure it will present a whole new host > > of "data points". > > yes! (there have been a few studies of this, btw) > > The part

Re: [Bloat] "BBR" TCP patches submitted to linux kernel

2016-09-29 Thread Dave Täht
On 9/29/16 6:54 PM, Mario Ferreira wrote: > On Thu, Sep 29, 2016, 16:43 Dave Täht > wrote: > > > > On 9/29/16 4:24 AM, Mário Sérgio Fujikawa Ferreira wrote: > > Is there a mailing list I can lurk in to follow on the development? > > > >

Re: [Bloat] "BBR" TCP patches submitted to linux kernel

2016-09-29 Thread Mario Ferreira
On Thu, Sep 29, 2016, 16:43 Dave Täht wrote: > > > On 9/29/16 4:24 AM, Mário Sérgio Fujikawa Ferreira wrote: > > Is there a mailing list I can lurk in to follow on the development? > > > > I'm most interested on a delta to apply to Android 6.x Franco Kernel > >

Re: [Bloat] "BBR" TCP patches submitted to linux kernel

2016-09-29 Thread Aaron Wood
On Thu, Sep 29, 2016 at 12:43 PM, Dave Täht wrote: > > > On 9/29/16 4:24 AM, Mário Sérgio Fujikawa Ferreira wrote: > > Is there a mailing list I can lurk in to follow on the development? > > > > I'm most interested on a delta to apply to Android 6.x Franco Kernel > >

Re: [Bloat] "BBR" TCP patches submitted to linux kernel

2016-09-29 Thread Mário Sérgio Fujikawa Ferreira
Is there a mailing list I can lurk in to follow on the development? I'm most interested on a delta to apply to Android 6.x Franco Kernel (https://github.com/franciscofranco/angler) and Debian Jessie. FreeBSD support would be excellent but I don't even have reviewed the license to be sure if

Re: [Bloat] "BBR" TCP patches submitted to linux kernel

2016-09-16 Thread Dave Taht
Thank you for this, in particular... http://www.spinics.net/lists/netdev/msg395552.html still reading over the code... TCP Pr0n, this is! ___ Bloat mailing list Bloat@lists.bufferbloat.net https://lists.bufferbloat.net/listinfo/bloat

Re: [Bloat] "BBR" TCP patches submitted to linux kernel

2016-09-16 Thread Steinar H. Gunderson
On Fri, Sep 16, 2016 at 02:04:37PM -0700, Dave Taht wrote: > I'm really looking forward to trying them out and reading the upcoming paper. > > https://patchwork.ozlabs.org/patch/671069/ BBR opensourced! I'm enthustiastic. Eric: Congrats! /* Steinar */ -- Homepage: https://www.sesse.net/

[Bloat] "BBR" TCP patches submitted to linux kernel

2016-09-16 Thread Dave Taht
I'm really looking forward to trying them out and reading the upcoming paper. https://patchwork.ozlabs.org/patch/671069/ -- Dave Täht Let's go make home routers and wifi faster! With better software! http://blog.cerowrt.org ___ Bloat mailing list