Re: RFC: Nagle latency tuning

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From: David Miller

Date: Monday, September 22, 2008 - 4:21 pm

From: Andi Kleen <andi@firstfloor.org>
Date: Tue, 23 Sep 2008 01:24:28 +0200

quoted text> On Mon, Sep 22, 2008 at 04:13:23PM -0700, David Miller wrote:
> > From: Chris Snook <csnook@redhat.com>
> > Date: Mon, 22 Sep 2008 19:00:08 -0400
> > 
> > > Could you please point me to an example of a connection parameter
> > > that gets tuned and cached this way, so I can experiment with it?
> > 
> > You'll find tons of them in tcp_update_metrics().
> 
> IMHO that is actually obsolete because it does not take NAT
> into account. One IP does not necessarily share link characteristics.

It is not an invalid estimate even in the NAT case, and it's not
so illegal like TCP timewait recycling would be.

Andi, don't rain on the party for something that might be terribly
useful for many people.
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Messages in current thread:

RFC: Nagle latency tuning, Christopher Snook, (Mon Sep 8, 2:56 pm)

Re: RFC: Nagle latency tuning, Rick Jones, (Mon Sep 8, 3:39 pm)

Re: RFC: Nagle latency tuning, Andi Kleen, (Mon Sep 8, 3:55 pm)

Re: RFC: Nagle latency tuning, Chris Snook, (Mon Sep 8, 10:10 pm)

Re: RFC: Nagle latency tuning, David Miller, (Mon Sep 8, 10:17 pm)

Re: RFC: Nagle latency tuning, Chris Snook, (Mon Sep 8, 10:22 pm)

Re: RFC: Nagle latency tuning, Chris Snook, (Mon Sep 8, 10:56 pm)

Re: RFC: Nagle latency tuning, David Miller, (Mon Sep 8, 11:02 pm)

Re: RFC: Nagle latency tuning, Evgeniy Polyakov, (Mon Sep 8, 11:22 pm)

Re: RFC: Nagle latency tuning, Chris Snook, (Mon Sep 8, 11:28 pm)

Re: RFC: Nagle latency tuning, Mark Brown, (Tue Sep 9, 3:31 am)

Re: RFC: Nagle latency tuning, David Miller, (Tue Sep 9, 5:05 am)

Re: RFC: Nagle latency tuning, Mark Brown, (Tue Sep 9, 5:09 am)

Re: RFC: Nagle latency tuning, David Miller, (Tue Sep 9, 5:19 am)

Re: RFC: Nagle latency tuning, Arnaldo Carvalho de Melo, (Tue Sep 9, 6:00 am)

Re: RFC: Nagle latency tuning, Andi Kleen, (Tue Sep 9, 7:36 am)

Re: RFC: Nagle latency tuning, Rick Jones, (Tue Sep 9, 9:33 am)

Re: RFC: Nagle latency tuning, Chuck Lever, (Tue Sep 9, 9:54 am)

Re: RFC: Nagle latency tuning, Arnaldo Carvalho de Melo, (Tue Sep 9, 10:21 am)

Re: RFC: Nagle latency tuning, Rick Jones, (Tue Sep 9, 10:54 am)

Re: RFC: Nagle latency tuning, Chris Snook, (Tue Sep 9, 11:40 am)

Re: RFC: Nagle latency tuning, Andi Kleen, (Tue Sep 9, 12:07 pm)

Re: RFC: Nagle latency tuning, Arnaldo Carvalho de Melo, (Tue Sep 9, 12:21 pm)

Re: RFC: Nagle latency tuning, David Miller, (Tue Sep 9, 12:59 pm)

Re: RFC: Nagle latency tuning, Chris Snook, (Tue Sep 9, 1:25 pm)

Re: RFC: Nagle latency tuning, Chris Snook, (Wed Sep 10, 9:08 pm)

Re: RFC: Nagle latency tuning, David Miller, (Mon Sep 22, 3:49 am)

Re: RFC: Nagle latency tuning, David Miller, (Mon Sep 22, 4:09 am)

Re: RFC: Nagle latency tuning, Andi Kleen, (Mon Sep 22, 1:30 pm)

Re: RFC: Nagle latency tuning, Chris Snook, (Mon Sep 22, 3:22 pm)

Re: RFC: Nagle latency tuning, David Miller, (Mon Sep 22, 3:26 pm)

Re: RFC: Nagle latency tuning, Rick Jones, (Mon Sep 22, 3:47 pm)

Re: RFC: Nagle latency tuning, Chris Snook, (Mon Sep 22, 3:57 pm)

Re: RFC: Nagle latency tuning, Chris Snook, (Mon Sep 22, 4:00 pm)

Re: RFC: Nagle latency tuning, David Miller, (Mon Sep 22, 4:13 pm)

Re: RFC: Nagle latency tuning, David Miller, (Mon Sep 22, 4:21 pm)

Re: RFC: Nagle latency tuning, Andi Kleen, (Mon Sep 22, 4:24 pm)

Re: RFC: Nagle latency tuning, Andi Kleen, (Mon Sep 22, 5:14 pm)

Re: RFC: Nagle latency tuning, Rick Jones, (Mon Sep 22, 5:33 pm)

Re: RFC: Nagle latency tuning, David Miller, (Mon Sep 22, 6:40 pm)

Re: RFC: Nagle latency tuning, Andi Kleen, (Mon Sep 22, 7