Hi Igor
Yeah, I took but I have to understand what I am seeing :) After your reply, I
have launched a ab benchmark with some values and I have a related question.
Srv Child Server number - generation, what does it mean?
Keep in mind that my first objective is to find how to monitor, how can I say?,
the "current clients" in some point in time vs Max Clients and finally see when
Apache reach this limit.
With mod-status Im seeing request/sec, idle and busy workers, the Srv number
(don't understand that, is related with MaxPerChild?) etc. But still does not
know how monitor "current clients".
My excuses if I am writing a lot of stupid questions but it is important to
have cristal clear this point.
Thanks
Rubén Ortiz
Administrador de Sistemas
Edificio nova gran via
Av. Gran Vía, 16-20, 2ª planta | 08902 L'Hospitalet de Llobregat (Barcelona)
T 902 999 343 | F 902 999 341
www.grupoitnet.com
-----Mensaje original-----
De: Igor Galić [mailto:[email protected]]
Enviado el: jueves, 18 de noviembre de 2010 16:24
Para: [email protected]
Asunto: Re: [us...@httpd] Easiest way to monitoring when Apache reach
MaxClients.
----- "Rubén Ortiz" <[email protected]> wrote:
> Hi all
>
> It is my very first email to community asking help and advices to
> Apache
> system administration. I have worked with Apache since 2004 on CentOS
> distribution most of the time.
>
> Currently I am worried about MaxClients. I work today with Apache
> 2.2.16
> with prefork and KeepAlives disabled. I can't explain that, I should
> do some
> test to verify Apache has more performance with KeepAlives on , it is
> something historic I could say. I know there are differences between
> prefork
> and mpm but I think it is a high level for me today.
>
> Anyway I am working to discover how discover when Apache reach
> MaxClients.
> And I having different sensations depending which command I execute on
> bash.
please take a look at mod_status
> Which I try to explain is:
>
> -bash-3.2# netstat -anp |grep :80|wc -l
> 2
>
> Connections (whatever type of connections) against port 80. However,
> one
> thing is the connections and other the processes of Apache:
>
> -bash-3.2# ps axuf |grep httpd
> root 15427 0.0 0.0 5184 696 pts/0 S+ 12:48 0:00
> \_
> grep httpd
> root 17477 0.0 1.1 45216 8568 ? Ss 11:51 0:00
> /usr/sbin/httpd
> apache 17480 0.0 0.5 45216 4540 ? S 11:51 0:00 \_
> /usr/sbin/httpd
> apache 17481 0.0 0.5 45216 4540 ? S 11:51 0:00 \_
> /usr/sbin/httpd
> apache 17482 0.0 0.5 45216 4536 ? S 11:51 0:00 \_
> /usr/sbin/httpd
> apache 17483 0.0 0.5 45216 4540 ? S 11:51 0:00 \_
> /usr/sbin/httpd
> apache 17484 0.0 0.5 45216 4540 ? S 11:51 0:00 \_
> /usr/sbin/httpd
> apache 17485 0.0 0.5 45216 4540 ? S 11:51 0:00 \_
> /usr/sbin/httpd
> apache 17486 0.0 0.5 45216 4540 ? S 11:51 0:00 \_
> /usr/sbin/httpd
> apache 17487 0.0 0.5 45216 4540 ? S 11:51 0:00 \_
> /usr/sbin/httpd
>
>
> And then my doubt. In working environment, to be able to control
> "Clients"
> of Apache, to avoid or maintain a monitoring of MaxClients reached,
> how to
> monitor? Processes or Connections? I think will be something more
> closer to
> processes, using ps, than something related with Tcp connections and
> netstat.
>
> Well, any advices will be welcome.
>
> Thanks!
>
>
>
>
>
>
>
> Rubén Ortiz
> Administrador de Sistemas
> Edificio nova gran via
> Av. Gran Vía, 16-20, 2ª planta | 08902 L'Hospitalet de Llobregat
> (Barcelona)
>
> T 902 999 343 | F 902 999 341
> www.grupoitnet.com
>
>
>
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--
Igor Galić
Tel: +43 (0) 664 886 22 883
Mail: [email protected]
URL: http://brainsware.org/
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