PHP memory_get_usage is larger than memory_limit

memory-limit, memory-management, php

Solution

memory_get_usage returns it in bytes, what you are calculating there is actually in `kB`. Divide it by `1024` again to have it in `MB`

Same goes for memory_get_peak_usage

e.g.

echo 'Memory in use: ' . memory_get_usage() . ' ('. ((memory_get_usage() / 1024) / 1024) .'M) <br>';

Problem

My PHP application has been running a bit slow and it's not very memory efficient at the moment. My whole server has been going down very often and I think I have this app to blame. I thought I'd monitor the memory usage and check how much I have as a limit: ``` echo 'Memory in use: ' . memory_get_usage() . ' ('. memory_get_usage()/1024 .'M) <br>'; echo 'Peak usage: ' . memory_get_peak_usage() . ' ('. memory_get_peak_usage()/1024 .'M) <br>'; echo 'Memory limit: ' . ini_get('memory_limit') . '<br>'; ``` This shows the following: ``` Memory in use: 629632 (614.921875M) Peak usage: 635696 (620.796875M) Memory limit: 128M ``` How could this be? Memory in use is WAY larger than memory limit? Either something's really broken or I do not understand at all how the `memory_limit` setting works (or `memory_get_usage()` ) Thank you all.

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