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From Michel Jouvin <jou...@lal.in2p3.fr>
Subject Re: [users@httpd] 2.0.48/49 : httpd children multiplying and eating 100% of CPU
Date Wed, 28 Apr 2004 13:49:24 GMT
Here is another log, simpler because there is only one process involved.

Michel

--On lundi 26 avril 2004 15:17 +0200 Michel Jouvin <jouvin@lal.in2p3.fr> 
wrote:

> Hi Joshua,
>
> I have not been able to send you the information requested still. The
> problem has not occurred for 3 days...
>
> In fact, the only change I made just before posting the problem to the
> list was to review worker MPM settings and lower the 'StartServers' to 1
> as there is no need to start more at Apache startup (else other children
> are started and immediately killed). I don't think it explains the
> disparition of the problem. May be I just need to wait more...
>
> I attached my httpd.conf file and I'll let you know as soon as the
> problem occurs again, with the material requested.
>
> Thanks for your help.
>
> Michel
>
> --On vendredi 23 avril 2004 12:57 -0400 Joshua Slive <joshua@slive.ca>
> wrote:
>
>>
>> On Fri, 23 Apr 2004, Michel Jouvin wrote:
>>> From time to time (between 1 time/day and 1 time every 3 days, not at
>>> the same hour or interval), we see the number of httpd children process
>>> increasing to 20 or more in one hour. All these children except one
>>> compete to eat 100% of the idle CPU and have in common a strange
>>> characteristic : parent of these processes is not the master httpd but
>>> the only slave which is not consuming the CPU and has the master httpd
>>> as parent.
>>>
>>> These processes seems to be no longer under the control of Apache. First
>>> they are much more than allowed by ServerLimit (16). And they are not
>>> killed (even there is no message they couldn't be killed in main
>>> error_log) if stopping Apache. You need to kill -9 them manually.
>>
>> What modules are you using?
>>
>> Can you attch to the spinning processes with strace and/or a debugger and
>> see what they are up to?
>>
>> Joshua.
>>
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>
>
>
>      *************************************************************
>      * Michel Jouvin                 Email : jouvin@lal.in2p3.fr *
>      * LAL / CNRS                    Tel : +33 1 64468932        *
>      * B.P. 34                       Fax : +33 1 69079404        *
>      * 91898 Orsay Cedex                                         *
>      * France                                                    *
>      *************************************************************
>



     *************************************************************
     * Michel Jouvin                 Email : jouvin@lal.in2p3.fr *
     * LAL / CNRS                    Tel : +33 1 64468932        *
     * B.P. 34                       Fax : +33 1 69079404        *
     * 91898 Orsay Cedex                                         *
     * France                                                    *
     *************************************************************


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