From: Andi Kleen <andi@firstfloor.org>
To: Chris Snook <csnook@redhat.com>
Cc: Rick Jones <rick.jones2@hp.com>, Netdev <netdev@vger.kernel.org>
Subject: Re: RFC: Nagle latency tuning
Date: Tue, 09 Sep 2008 16:36:49 +0200 [thread overview]
Message-ID: <87zlmhs7we.fsf@basil.nowhere.org> (raw)
In-Reply-To: <48C6052D.2080203@redhat.com> (Chris Snook's message of "Tue, 09 Sep 2008 01:10:05 -0400")
Chris Snook <csnook@redhat.com> writes:
>
> I'd like to know where the 40 ms magic number comes from.
>From TCP_ATO_MIN
#define TCP_ATO_MIN ((unsigned)(HZ/25))
> That's the
> one that really hurts, and if we could lower that without doing
> horrible things elsewhere in the stack,
You can lower it (with likely some bad side effects), but I don't think it
would make these apps very happy in the end because they likely want
no delay at all.
-Andi
next prev parent reply other threads:[~2008-09-09 14:36 UTC|newest]
Thread overview: 44+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-09-08 21:56 RFC: Nagle latency tuning Christopher Snook
2008-09-08 22:39 ` Rick Jones
2008-09-09 5:10 ` Chris Snook
2008-09-09 5:17 ` David Miller
2008-09-09 5:56 ` Chris Snook
2008-09-09 6:02 ` David Miller
2008-09-09 10:31 ` Mark Brown
2008-09-09 12:05 ` David Miller
2008-09-09 12:09 ` Mark Brown
2008-09-09 12:19 ` David Miller
2008-09-09 6:22 ` Evgeniy Polyakov
2008-09-09 6:28 ` Chris Snook
2008-09-09 13:00 ` Arnaldo Carvalho de Melo
2008-09-09 14:36 ` Andi Kleen [this message]
2008-09-09 18:40 ` Chris Snook
2008-09-09 19:07 ` Andi Kleen
2008-09-09 19:21 ` Arnaldo Carvalho de Melo
2008-09-11 4:08 ` Chris Snook
2008-09-09 19:59 ` David Miller
2008-09-09 20:25 ` Chris Snook
2008-09-22 10:49 ` David Miller
2008-09-22 11:09 ` David Miller
2008-09-22 20:30 ` Andi Kleen
2008-09-22 22:22 ` Chris Snook
2008-09-22 22:26 ` David Miller
2008-09-22 23:00 ` Chris Snook
2008-09-22 23:13 ` David Miller
2008-09-22 23:24 ` Andi Kleen
2008-09-22 23:21 ` David Miller
2008-09-23 0:14 ` Andi Kleen
2008-09-23 0:33 ` Rick Jones
2008-09-23 2:12 ` Andi Kleen
2008-09-23 1:40 ` David Miller
2008-09-23 2:23 ` Andi Kleen
2008-09-23 2:28 ` David Miller
2008-09-23 2:41 ` Andi Kleen
2008-09-22 22:47 ` Rick Jones
2008-09-22 22:57 ` Chris Snook
2008-09-09 16:33 ` Rick Jones
2008-09-09 16:54 ` Chuck Lever
2008-09-09 17:21 ` Arnaldo Carvalho de Melo
2008-09-09 17:54 ` Rick Jones
2008-09-08 22:55 ` Andi Kleen
2008-09-09 5:22 ` Chris Snook
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