[SOLVED] Http query saturation on CT

[nico las]

Dear community,

I have a proxmox server (last version, Virtual Environment 4.4-5) and I have a CT on it with debian 8.

The CT saturate (apache timeout) after 150 http query / seconds, but I don't understand why because my load server are only 7%.

Could you help me to understand why please ?

 

[nico las]

No help about this ? I looking about ulimit but I don't know if is a right way... I know mysql, php, apache are their limit, and I already optimize this parts.

 

[dcsapak]

this depends largely on your apache config i think?
what limits do you have there ?

 

[nico las]

Thanks for your reply.

I don't know if is important but the ulimit -n command give me 65536 on proxmox server, and only 1024 on my CT.

You can find below some of my configuration where I looking for information about limit or max processus

/etc/apache2/envvars

## If you need a higher file descriptor limit, uncomment and adjust the
## following line (default is 8192):
#APACHE_ULIMIT_MAX_FILES='ulimit -n 65536'

/etc/apache2/apace2.conf

# MaxKeepAliveRequests: The maximum number of requests to allow
# during a persistent connection. Set to 0 to allow an unlimited amount.
# We recommend you leave this number high, for maximum performance.
#
MaxKeepAliveRequests 100

/etc/apache2/mods-enabled/mpm_prefork.conf

# prefork MPM
# StartServers: number of server processes to start
# MinSpareServers: minimum number of server processes which are kept spare
# MaxSpareServers: maximum number of server processes which are kept spare
# MaxRequestWorkers: maximum number of server processes allowed to start
# MaxConnectionsPerChild: maximum number of requests a server process serves

<IfModule mpm_prefork_module>
StartServers 5
MinSpareServers 5
MaxSpareServers 10
MaxRequestWorkers 150
MaxConnectionsPerChild 0
</IfModule>

# vim: syntax=apache ts=4 sw=4 sts=4 sr noet

 

[dcsapak]

MaxRequestWorkers 150

sounds like there is your limit?

but beware i am no specialist in apache tuning, so maybe those questions are better for people who know apache

 

[nico las]

Yes, I will try to increase this value. This subject has a lot of possibilities.
Thanks for you help