Re: Re: php daemons, memory

> On 11.01.2009 03:21, jvlad wrote: >> Almost. >> Try to compile your very-own-version of php, using configure argument >> --disable-zend-memory-manager > > There is no such configure option since ages. seems you're flying too high. RHEL5 still ships php5.1.6 and it has this option and it undefines ZEND_USE_ZEND_ALLOC. For the newer versions (5.2.x) it can be set at the environment, which is not that good btw. > That won't affect memory usage very much. I gives appox 2MB per php-cli instance. Sometimes it's good enough, if for example you need to run 200 instances. >> - --enable-debug did report some small leaks, but much less then the >>> consumption grow. >> >> zend memory manager won't release memory to the system. > > That's plain wrong. > Of course it does free() memory whenever it thinks the memory should be > free()-ed. > Though that doesn't guarantee that the OS is be able to reuse this memory. Antony, I think you're wrong with this. ZMM does never release memory to the system. Instead it puts free chunks into its own free memory chain. See how _zend_mm_free_int() works in 5.2.5 and it's the only function that is called from for example _efree, at least when ZMM is enabled. -regards, jv.