Zabbix 1.6.4 & Httpd & Mysql CPU Load

[sheen]

Hello all,

I've just installed Zabbix 1.6.4 on a P4 2.4 Ghz & 512 Mb RAM with a CentOS based distro.
Zabbix configuration is set by default.

When I'm on Zabbix http frontend, every 30s I got about 8 httpd request and one MySQL request, I think it's normal, webpage are refreshed

But each httpd request takes between 10% and 20% of CPU Load, after 10min, average system charge reach about 4.00 which is huge.

I've read a lots of topics concerning optimisations of Apache and MySQL, I've tried differents parameters into /etc/my.cnf and /etc/httpd/httpd.conf but CPU charge is very heavy yet.

Sorry I can't post "httpd.conf" and "my.cnf" because I'm currently not at work but in studies, I'll post them later.


Httpd request should take 2/3% of CPU instead of 10/20%


So I have some questions :
- I've read about Zabbix Memory Leak since 1.6.3, maybe should I downgrade ?
- My Php Version is not the latest one, I have the 5.1.6, maybe should I install the latest version ?
- My MySQL database is on the same Hard Disk than the system, maybe should I move it into another physical disk or through the network ?
- Maybe my P4 2.4 with 512 Mb RAM is too much for Zabbix ? (I don't think so)

Thanks for your replies

[swaterhouse]

A P4 with 512 MB RAM is going to struggle with what I assume is CentOS 5 (based on you MySQL version), with ZABBIX and MySQL on the same box (never mind the same disk). If possible move MySQL to another box that will help immensly.

[sheen]

Thanks for your reply.
I'll try to move MySQL to another Box or another HD, if the problem remain, I'll guess I have to try with a more powerfull computer.

Let's try.


Edit : I've tried with 1.6.2 instead of 1.6.4 it works like a charm ! I think I'll keep this version and move my database to another HD.

[ajszi]

The situation is the same here as well.

CPU: 4 core Intel(R) Xeon(R) CPU E5430 @ 2.66GHz
RAM: 4GB
MySQL: 5.1

The server's load is totally normal IF the frontend is not used.
If it's opened on 1-2 desktops it will go up immediately to 3-5.

Anyone else facing this kind of problem?

Already tweaked mysql, and I'm using lighttpd (apache was worse).

[sheen]

Try 1.6.2 instead of 1.6.4
On my old P4 there is a huge difference

[krimson]

The situation is the same here as well.

CPU: 4 core Intel(R) Xeon(R) CPU E5430 @ 2.66GHz
RAM: 4GB
MySQL: 5.1

The server's load is totally normal IF the frontend is not used.
If it's opened on 1-2 desktops it will go up immediately to 3-5.

Anyone else facing this kind of problem?

Already tweaked mysql, and I'm using lighttpd (apache was worse).

I am also seeing increased load on the database server. Did not show this behaviour on 1.6.2.

[bimind]

Same problem.

http://www.zabbix.com/forum/showthread.php?t=12097