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Posted to users@httpd.apache.org by Rubén Ortiz <ru...@itnet.es> on 2010/11/18 12:59:01 UTC
[users@httpd] Easiest way to monitoring when Apache reach MaxClients.
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.
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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