Php CLI script ignoring memory_limit, crashing at much lower number than limit

Question

for some reason, my one of my php scripts are ignoring the php.ini memory limit or ini_set.

When i do a print_r(ini_get_all) it shows the global memory limit set to 100M (and local for that matter), when my script dies at Fatal error: Out of memory (allocated 24714304) (tried to allocate 571 bytes)

Any tips on diagnosing this? The server has 8gigs of memory and never had problems running this script before.

Any tips on debugging this?

Thanks!

Cœur · Accepted Answer · 2020-02-16 14:52:04Z

5

The single most common cause of this is that usually the CLI PHP binary is using a different php.ini file than you expect. This can be caused by user permissions, or simply different default php.ini files for installed versions of PHP. However, it sounds like you've profiled it a bit and your memory limit may be correct inside your script.

In that case, it's quite possible that there is a hard memory limit on processes that is imposed by your operating system, in which case you'll have to figure out where the imposition comes from.

I suggest taking a look at this thread, as that poster went through something very similar to your situation.

edited Feb 16, 2020 at 14:52

Cœur

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answered Dec 30, 2009 at 20:58

zombat

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3 Comments

james Over a year ago

you might be right, there may be a hard limit in effect. i have no clue how to find that. maybe i will ask on server fault!

james Over a year ago

you are a smart person i did some research about bash memory limits check out ulimit -v, which had hard limited my memory!!!

Dash Over a year ago

For me, the issue was running php-fpm but copying the config file into cli/conf.d instead of fpm/conf.d. Explains why php -i was showing my updated config but the script was still crashing.

james · Accepted Answer · 2009-12-30 21:16:06Z

5

The virtual memory for my processes was being hard limited (too a much lower number).

From a bash shell i did this:

ulimit -v (memory_in_bytes, no parentheses)

this fixed my problem. god i love stackoverflow

answered Dec 30, 2009 at 21:16

james

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Comments

mozillalives · Accepted Answer · 2009-12-30 21:01:50Z

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the short and sweet

ini_set('memory_limit', -1);

in case you want to skip the debugging

answered Dec 30, 2009 at 21:01

mozillalives

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2 Comments

Pekka Over a year ago

I think he is past that point already. His INI settings already are on 100M.

james Over a year ago

well i have done that but it did not work. In fact if i print out my phpinfo() it will show a much higher memory limit, and when i print out ini_get_all() any memory limit changes are shown.

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