From: Christian Schmid <webmaster@rapidforum.com>
To: Rik van Riel <riel@redhat.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: Slowdown on high-load machines with 3000 sockets
Date: Mon, 28 Feb 2005 01:29:59 +0100 [thread overview]
Message-ID: <42226607.6020803@rapidforum.com> (raw)
In-Reply-To: <Pine.LNX.4.61.0502271905270.19979@chimarrao.boston.redhat.com>
I already tried with 300 KB and even used a perl-hash as a horrible-slow buffer for a
readahead-replacement. It still slowed down on the syswrite to the socket. Thats the strange thing.
Rik van Riel wrote:
> On Mon, 28 Feb 2005, Christian Schmid wrote:
>
>
>>No i am only using 4 tasks with Poll-API and non-blocking sockets. Every
>>socket gets a 1 MB read-ahead. This are 4000 MB Max on a 8 GB machine....
>>Shouldnt thrash.
>
>
> If nothing else on the system uses any memory, and there
> were no memory zones and no division into active and
> inactive memory.
>
> You may want to try a smaller readahead window and see if
> your system still has trouble with the load.
>
next prev parent reply other threads:[~2005-02-28 0:30 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-02-27 16:53 Slowdown on high-load machines with 3000 sockets Christian Schmid
2005-02-27 17:18 ` Rik van Riel
2005-02-27 21:09 ` Rik van Riel
2005-02-27 21:20 ` Christian Schmid
2005-02-27 23:32 ` Rik van Riel
2005-02-27 23:43 ` Christian Schmid
2005-02-28 0:06 ` Rik van Riel
2005-02-28 0:29 ` Christian Schmid [this message]
2005-02-28 5:13 ` Nick Piggin
2005-02-28 11:36 ` Christian Schmid
2005-02-28 18:56 ` Christian Schmid
2005-02-28 23:46 ` Nick Piggin
2005-03-05 16:39 ` Christian Schmid
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