From: Hagen Paul Pfeifer <hagen@jauu.net>
To: tsuna <tsunanet@gmail.com>
Cc: "H.K. Jerry Chu" <hkjerry.chu@gmail.com>,
David Miller <davem@davemloft.net>, <kuznet@ms2.inr.ac.ru>,
<pekkas@netcore.fi>, <jmorris@namei.org>,
<yoshfuji@linux-ipv6.org>, <kaber@trash.net>,
<netdev@vger.kernel.org>, <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] tcp: Expose the initial RTO via a new sysctl.
Date: Tue, 31 May 2011 17:25:22 +0200 [thread overview]
Message-ID: <da8dbb76f0cb3762227d8d0a99eaff21@localhost> (raw)
In-Reply-To: <BANLkTimqtjskX5q2ovTp_c05MdqBDOWsRg@mail.gmail.com>
On Tue, 31 May 2011 07:48:09 -0700, tsuna <tsunanet@gmail.com> wrote:
> I talked to Jerry and he's agreed to share some patches that Google
> has been using internally for years.
Great!
> Personally what I think would be ideal would be:
> 1. A sysctl knob for initRTO, to allow people to adjust this
> appropriately for their environment.
> 2. Apply the srtt / rttvar seen on previous connections to new
> connections.
>
> Does that sound reasonable?
>
> For 2), I'm not sure how the details would work yet, I believe the
> kernel already has what's necessary to remember these things on a per
> peer basis, but it would be nice if I could specify things like "for
> 10.x.0.0/16 (local datacenter) use this aggressive setting, for
> 10.0.0.0/8 (my internal backend network) use that, for everything else
> (Internets etc.) use the default".
Skip sysctl, it is deprecated. The initRTO is the ideal candidate for a
per route knob. And happily you will solve 2) with the per route thing too!
;-)
Search the web, you will find some patches where you can see how to extend
the per route system - including iproute2.
Hagen
next prev parent reply other threads:[~2011-05-31 15:25 UTC|newest]
Thread overview: 45+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-05-17 7:40 [PATCH] tcp: Expose the initial RTO via a new sysctl Benoit Sigoure
2011-05-17 7:40 ` Benoit Sigoure
2011-05-17 8:01 ` Alexander Zimmermann
2011-05-17 8:34 ` Eric Dumazet
2011-05-17 8:07 ` Eric Dumazet
2011-05-17 11:02 ` Hagen Paul Pfeifer
2011-05-17 12:20 ` Eric Dumazet
2011-05-18 10:43 ` Benoit Sigoure
2011-05-18 19:26 ` David Miller
2011-05-18 19:40 ` tsuna
2011-05-18 19:52 ` David Miller
2011-05-18 20:20 ` Hagen Paul Pfeifer
2011-05-18 20:23 ` David Miller
2011-05-18 20:27 ` Hagen Paul Pfeifer
2011-05-20 10:27 ` H.K. Jerry Chu
2011-05-20 11:00 ` Hagen Paul Pfeifer
2011-05-20 12:37 ` Alan Cox
2011-05-21 0:06 ` H.K. Jerry Chu
2011-05-31 14:48 ` tsuna
2011-05-31 15:25 ` Hagen Paul Pfeifer [this message]
2011-05-31 15:28 ` tsuna
2011-05-31 15:43 ` Hagen Paul Pfeifer
2011-05-19 2:22 ` [PATCH] tcp: Implement a two-level initial RTO as per draft RFC 2988bis-02 Benoit Sigoure
2011-05-19 2:36 ` David Miller
2011-05-19 3:56 ` tsuna
2011-05-19 4:14 ` David Miller
2011-05-19 4:33 ` tsuna
2011-05-19 5:46 ` David Miller
2011-05-19 6:36 ` [PATCH] tcp: Lower the initial RTO to 1s " Benoit Sigoure
2011-05-19 17:42 ` Yuchung Cheng
2011-05-19 6:47 ` Benoit Sigoure
2011-05-19 20:16 ` David Miller
2011-05-19 6:10 ` [PATCH] tcp: Implement a two-level initial RTO " Alexander Zimmermann
2011-05-19 6:25 ` tsuna
2011-05-19 6:36 ` Alexander Zimmermann
2011-05-19 6:42 ` tsuna
2011-05-19 6:52 ` Alexander Zimmermann
2011-05-19 7:07 ` tsuna
2011-05-19 8:02 ` Hagen Paul Pfeifer
2011-05-19 16:40 ` tsuna
2011-05-19 16:55 ` Alexander Zimmermann
2011-05-19 17:11 ` tsuna
2011-05-19 19:27 ` David Miller
2011-05-19 20:30 ` tsuna
2011-05-20 2:01 ` [PATCH] tcp: Expose the initial RTO via a new sysctl H.K. Jerry Chu
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