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From Jim Albert <...@netrition.com>
Subject Re: [users@httpd] Apache dummy connection
Date Mon, 26 Jun 2006 21:45:40 GMT
Jim Albert wrote:
> T. Devergranne wrote:
> 
>>>> I have a lot of theses (Apache internal dummy connection), 
>>>
>>>
>>> but I can't
>>>
>>>> get rid of them, I don't know where they come from. Any hints ?
>>>>
>>>>
>>>> 192.168.1.20 - - [09/Mar/2006:08:42:40 +0000] "GET / HTTP/1.0" 200 
>>>> 15545 "-" "Apache (internal dummy connection)" 192.168.1.20 - - 
>>>> [09/Mar/2006:08:42:41 +0000] "GET / HTTP/1.0" 200 15564 "-" "Apache 
>>>> (internal dummy connection)" 192.168.1.20 - - [09/Mar/2006:08:42:42 
>>>> +0000] "GET / HTTP/1.0" 200 15440 "-" "Apache (internal dummy 
>>>> connection)"
>>>>
>>>> I'm using 2.2.0.
>>>
>>>
>>> Maybe this will help you: 
>>> http://www.archivatna.com/t52552-internal-dummy-connection.html
>>
>>
>>
>>
>> I've seen the discussion, but it doesn't help much. Anyone, an way out ?
> 
> 
> I've noticed this also starting with Apache2.2.
> I see a large number of those internal dummy connection requests during 
> an apache graceful restart (SIGUSR1) and at the same time the cpu load 
> on the Apache2.2 server maxes out at nearly 100%.
> 
> I'm wondering if anyone else sees this high cpu usage with a graceful 
> restart of Apache2.2.
> 
> My home page (GET /) is dynamically generated (although running under 
> mod_perl) but I use the following mod_rewrite rule to make / a very 
> uncostly http request when the HTTP_USER_AGENT is "internal dummy request".
> 
> RewriteEngine on
> RewriteCond %{HTTP_USER_AGENT} ^.*internal\ dummy\ connection.*$ [NC]
> RewriteRule ^/$ /small_static_page.html [L]
> 
> Can anyone comment or confirm a similar experience with high cpu usage 
> during a graceful restart of Apache2.2?
> 
> My OS is Linux 2.6.16-1.2133_FC5smp
> 

In addition I see the following when doing a graceful restart of httpd:
[Mon Jun 26 14:17:14 2006] [notice] Graceful restart requested, doing 
restart
[Mon Jun 26 14:17:15 2006] [error] (9)Bad file descriptor: 
apr_socket_accept: (client socket)
[Mon Jun 26 14:17:59 2006] [notice] Digest: generating secret for digest 
authentication ...
[Mon Jun 26 14:17:59 2006] [notice] Digest: done

I find very little on what the "Bad file descriptor: apr_socket_accept" 
error means.

I am using Apache/2.2.0 on Linux 2.6.16-1.2133_FC5smp


-- 
Jim Albert

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