CODEWITHSUNDEEP
linuxbashshellprocess
Max13
Max13

Reputation: 921

Script killing too long process

I'm a webhosting owner, I don't know why currently, but I have some php scripts that are launched for many hours (as personnaly known customers), so I think there is a bug somewhere.

These scripts are eating the RAM AND the swap... So I'm looking for a way to list processes, find the execution time, kill them 1 by 1 if the execution exceed 10 or 20 minutes.

I'm not a bash master, but I know bash and pipes. The only thing I don't know, is how to list the processes (with execution time AND complete command line with arguments). Actually, even in top (then c) there is no arguments in php :/

Thanks for your help.

Upvotes: 0

Views: 1371

Answers (2)

lanzz
lanzz

Reputation: 43158

If you are running Apache with mod_php, you will not see a separate PHP process since the script is actually running inside an Apache process. If you are running as FastCGI, you also might not see a distinguishable PHP process for the actual script execution, though I have no experience with PHP/FastCGI and might be wrong on this.

You can set the max_execution_time option, but it is overridable at run time by calling set_time_limit() unless you run in Safe Mode. Safe mode, however, has been deprecated in PHP 5.3 and removed in 5.4, so you cannot rely on it if you are on 5.4 or plan to upgrade.

If you can manage it with your existing customers (since in some cases it requires non-trivial changes to PHP code), running PHP as CGI should allow you to monitor the actual script execution, as each CGI request will spawn a separate PHP interpreter process and you should be able to distinguish between the scripts they are executing. Note, however, that CGI is the least effective setup (the others being mod_php and FastCGI).

Upvotes: 4

Tomislav Dyulgerov
Tomislav Dyulgerov

Reputation: 1026

You can use the ps -aux command to list the processes with some detailed information.

You can also check out the ps man page.

This might also be of some help.

Upvotes: 1

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