Fatal error : Allowed memory size of 8388608 bytes exhausted

Pascal · Post by **Pascal** » Wed Oct 05, 2005 3:14 am

Hey,

Sorry for my bad english.

I have an error during the execution of script poller.php with the command php4 /var/www/cacti/poller.php

"Fatal error : Allowed memory size of 8388608 bytes exhausted (tried to allocate 82 bytes in var/www/cacti/poller.php"
Information : I have 4500 graphs and 45 devices

My config is :

Cacti0.8.6g and cactid0.8.6e
Debian 2.6.9 woody
Apache1.3
PHP4 4.1.2
Mysql3.23.49
Net-snmp 5.2.1
RRDTOOL 1.0.35

I tried to allocate more memory in php.ini (like memory_limit=256M and max_execution_time=300) without success.

Can you give my some help please ??

Pascal

fmangeant · Post by **fmangeant** » Wed Oct 05, 2005 3:22 am

Hi

what

Code: Select all

<? phpinfo(); ?>

gives you about memory_limit ?

Pascal · Post by **Pascal** » Wed Oct 05, 2005 4:51 am

hi,

i took memory_limit=256M in config file /etc/php4/apache/php.ini
but it not resolve the problem, so i took memory_limit=64M

Pascal

Post by **TheWitness** » Wed Oct 05, 2005 5:29 am

I strongly encourage all users to be at PHP 4.3.6 or above. It provides several very important features to Cacti.

TheWitness

Post by **rony** » Wed Oct 05, 2005 9:16 am

Did you restart the web service/process after changing the php.ini?

Pascal · Post by **Pascal** » Thu Oct 06, 2005 2:46 am

yes, I restart the web service/process after changing the php.ini.

I want to know if the configuration of the poller (ie 15 process and 5 threads is good ??) this configuration maybe take a lot of memory.

I configure my poller with 30 process and only one thread and my problem was solved.

Thanks for your help.

Pascal

Post by **TheWitness** » Thu Oct 06, 2005 5:17 am

What is your mixture of scripts vs. snmp? If your percentage of scripts is higher, I would increase the processes to no more than twice the number of CPU's.

I have a 4 cpu Xeon PIII 550 and run 3 processes and 15 threads, and it run as fast as it will ever. The behavior that I have found is as follows:

1) If I increase the number of processes, the CPU load get's too high, which in turn deminishes www performance
2) If I increase the number of threads, context switching goes to high, again with marginal at best performance increases. It also deminishes web performance.

So, the rule of thumb to have no more than twice your number of process sticks for me. And definately keep it under 30 threads.

TheWitness

Fatal error : Allowed memory size of 8388608 bytes exhausted

Fatal error : Allowed memory size of 8388608 bytes exhausted

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