On 4/13/07, David Miller <[EMAIL PROTECTED]> wrote:
From: "Robert Iakobashvili" <[EMAIL PROTECTED]>
Date: Thu, 12 Apr 2007 23:11:14 +0200
> It works good with 2.6.11.8 and debian 2.6.18.3-i686 image.
>
> At the same Intel Pentium-4 PC with the same about kernel configuration
> (make oldconfig using Debian config-2.6.18.3-i686) the setup fails with the
> tcp-connections stalled after 1000 established connections when the kernel
> is 2.6.20.6 or 2.6.19.5.
>
> It stalls even earlier, when lighttpd used with the default (poll ())
> demultiplexing
> after 500 connections or when apache2 web server used (memory?) - after 100
> connections.
>
> I am currently going to try vanilla 2.6.18.3 and, if with it also
> fails, to look through
> Debian patches, trying to figure out, what is the delta.
Vanilla 2.6.18.3 works for me perfectly, whereas 2.6.19.5 and
2.6.20.6 do not.
Looking into the tcp /proc entries of 2.6.18.3 versus 2.6.19.5
tcp_rmem and tcp_wmem are the same, whereas tcp_mem are
much different:
kernel tcp_mem
---------------------------------------
2.6.18.3 12288 16384 24576
2.6.19.5 3072 4096 6144
Is not it done deliberately by the below patch:
commit 9e950efa20dc8037c27509666cba6999da9368e8
Author: John Heffner <[EMAIL PROTECTED]>
Date: Mon Nov 6 23:10:51 2006 -0800
Sorry, the commit is innocent. Something else has been
broken in tcp_mem initialization logic.
My machine has:
MemTotal: 484368 kB
and
for all kernel configurations are actually the same with
CONFIG_HIGHMEM4G=y
Sincerely,
Robert Iakobashvili,
coroberti %x40 gmail %x2e com
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