clientexec + cron = problems

web-project · 20th December 2006

Hi all,

Does any one know the resources usage for clientexec + cron?

So far I used default settings for cron:

Quote:

30 * * * * /usr/local/bin/php -q /home/user/public_html/services.php 'order'
30 * * * * /usr/local/bin/php -q /home/user/public_html/services.php 'deletependingusers'
30 * * * * /usr/local/bin/php -q /home/user/public_html/services.php 'order'
0 0 * * * /usr/local/bin/php -q /home/user/public_html/services.php 'rebiller'
* * * * * /usr/local/bin/php -q /home/user/public_html/services.php 'fetchticket'
0 0 * * * /usr/local/bin/php -q /home/user/public_html/services.php 'autosuspend'
30 * * * * /usr/local/bin/php -q /home/user/public_html/services.php 'order'
30 * * * * /usr/local/bin/php -q /home/user/public_html/services.php 'invoicegenerator'
30 * * * * /usr/local/bin/php -q /home/user/public_html/services.php 'autoclose'
* * * * * /usr/local/bin/php -q /home/user/public_html/services.php 'serverstatus'

Abuse depatment sent me email saying that "I had used more than 2% CPU daily, 3% memory daily, run more than 16 simultaneous processes per user for longer than 30 CPU seconds. cron setup at this account made the server totally unstable and we had to reboot it".

Is it true?

Rebuke · 20th December 2006

Well, at 30 mins past the hour you're running a lot of processes, including "/usr/local/bin/php -q /home/user/public_html/services.php 'order'" 3 times, which doesn't seem right.

Never having used clientexec I can't say what load each process is, but running everything at 30 mins past the hour seems strange, if they're separate processes why not spread them out a bit, if they have to run at the same time why do you have to put them in as separate cron jobs...

SixtyClear · 21st December 2006

Yeah i agree with "Rebuke".

I myself run ClientExec, we have the Cron Jobs seperated out with a fairly substantial time gap in between each so that they run at very random times thus not causing a load issue.

Although it seems your using all of the ClientExec cron jobs, whereas we aren't, we are using only 2/3 jobs, as everything else, like ticketing is piped into the system via PHP, and all orders are manual processes.

I would recommend changing the times so they all run at random times during the day to help distribute the load.