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List:       apache-httpd-users
Subject:    Re: [users@httpd] Slow Responses Under Low Load
From:       Rainer Jung <rainer.jung () kippdata ! de>
Date:       2010-08-31 21:55:24
Message-ID: 4C7D7A4C.7030509 () kippdata ! de
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On 31.08.2010 23:38, Eric Covener wrote:
>> Running `netstat -tapn | grep 80 | wc -l' shows 11299
>> connections to port 80. We're setup to use prefork with the following
>> configuration.
>>
>> MaxClients        1000
>
> Is the netstat output a typo?  With MaxClients 1000 and the default
> ListenBackLog of ~500, you should have started refusing connections
> long ago.

Likely most of them are TIME_WAIT. Those are not connected any more, but 
to many of them make the TCP connection hash slow on many platforms.

If the OPs output is like mine, he can get a better statistics via:

netstat -tan | awk '/:80 / {print $NF}' | sort | uniq -c

Regards,

Rainer

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