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From: Eric Dumazet <dada1@cosmosbay.com>
To: Evgeniy Polyakov <johnpol@2ka.mipt.ru>
Subject: Re: [patch 00/13] Syslets, "Threadlets", generic AIO support, v3
Date: Thu, 1 Mar 2007 16:32:37 +0100
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Cc: Ingo Molnar <mingo@elte.hu>, Pavel Machek <pavel@ucw.cz>,
       Theodore Tso <tytso@mit.edu>,
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       Arjan van de Ven <arjan@infradead.org>,
       Christoph Hellwig <hch@infradead.org>, Andrew Morton <akpm@zip.com.au>,
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On Thursday 01 March 2007 16:23, Evgeniy Polyakov wrote:
> They are there, since ab runs only 50k requests.
> If I change it to something noticebly more than 50/80k, ab crashes:
> # ab -c8000 -t 600 -n800000000 http://192.168.0.48/
> This is ApacheBench, Version 2.0.40-dev <$Revision: 1.146 $> apache-2.0
> Copyright 1996 Adam Twiss, Zeus Technology Ltd, http://www.zeustech.net/
> Copyright 2006 The Apache Software Foundation, http://www.apache.org/
>
> Benchmarking 192.168.0.48 (be patient)
> Segmentation fault
>
> Are there any other tool suitable for such loads?
> I only tested httperf (which is worse, since it uses poll/select) and
> 'ab'.
>
> Btw, host machine runs 100% too, so it is possible that client side is
> broken (too).

I have similar problems here, ab test just doesnt complete...

I am still investigating with strace and tcpdump.

In the meantime you could just rewrite it (based on epoll please :) ), since 
it should be quite easy to do this (reverse of evserver_epoll)