Re: [ZEND-ENGINE-CVS] cvs: Zend / zend.czend.hzend_config.nw.h

Gentlemen, Thanks for your responses. Understood the idea behind having the memory leaks in PHP: - Operating system will clean them up. - To reduce the overhead of tracking memory allocation which may be no point since the operating system cleans them up anyway. - A small performance upgrade in CGI environment when free is not done. But, just wanted to know when does the operating system be kicked in to do the clean up? Is it after the script execution is all done or does it happen even while the script is running? Also, how do we tell the operating system when to kick in to do the clean up? At this point I would like to clarify that we are not that much bothered about the memory leak that is present Per Executable. What we are bothered about is the memory leak Per Script. It is ok to have some memory held up by PHP once it loads (let me call that, threshold memory). But memory should not keep on increasing as scripts are being executed. This operating memory should be cleaned up on Per Script Basis so that the memory will hover around the threshold memory and not keep on increasing. We found this problem on NetWare. I am not sure if the Windows and Unix users also have this problem. So, we are wondering what fix we need to do for NetWare for this. Please clarify. Thanks, Ananth. >>> Sascha Schumann <sascha@schumann.cx> 01/08/03 01:48AM >>> Ananth, just let me say that expecting all utilities to clean up behind themselves will cause an unstable operating system environment in the long run. Sometimes applications fail and won't be able to clean up. Sometimes applications rely on the 30 year old UNIX semantics which dictate that the operating system will clean up the processes' resources. For example, it has been a long tradition in CGI programming to leave freeing resources to the operating system. There are also some libraries (especially the popular glib used for GTK/GIMP/GNOME/etc) which specifically expect this behaviour for speed reasons. - Sascha