php_malloc.d - PHP libc malloc analysis. php_malloc.d { -p PID | -c cmd } This is an expiremental script to identify who is calling malloc() for memory allocation, and to print distribution plots of the requested bytes. If a malloc() occured while in a PHP function, then that function is identified as responsible; else the caller of malloc() is identified as responsible - which will be a function from the PHP engine. Filename and function names are printed if available. Any Evolving - uses the DTrace Php provider, which may change as additional features are introduced. Check Php/Readme to see what version these scripts are based on.

Default output, # php_malloc.d

See the DTraceToolkit for further documentation under the Examples, Notes and Docs directories. The example files may be especially useful as they aim to demonstrate how to interpret the output. php_malloc.d will run until Ctrl-C is hit. Brendan Gregg [CA, USA] dtrace(1M)