Re: PHP 4.0 Bug #8889 Updated: Memory is not being freed.

This is the answer I had previously received. IMHO, this sucks. We don't do SQL queries on our production site. It is all cached. So, SQL is not the problem. It is most likely because of the storage of large arrays or something of that nature. I guess we will continue to use MaxRequestsPerChild until one day the people that wrote that memory allocation system get a clue. Brian Moon ------------------------------------------------------------------------- Phorum Dev Team - http://phorum.org Making better forums with PHP ------------------------------------------------------------------------- Look for my presentation at ApacheCon 2001. "Caching Dynamic Web Content to Increase Dependability and Performance" http://www.apachecon.com/ ----- Original Message ----- From: "Andi Gutmans" <andi@zend.com> To: "Brian Moon" <brian@phorum.org>; <php-dev@lists.php.net> Sent: Monday, April 30, 2001 2:54 PM Subject: Re: [PHP-DEV] PHP 4.0 Bug #8889 Updated: Memory is not being freed. > Memory is never returned to the system with libc memory allocation. > When you need memory it enlarges the address space it is using. Freeing > memory won't make it shrink its address space. > All I can suggest is to write your scripts in a way that if it deals with > many SQL queries free a query before you do the next. This way the maximum > size of your scripts memory space will hopefully be smaller. > > Andi > > At 02:37 PM 4/30/2001 -0500, Brian Moon wrote: > >The big problem is that the memory is never returned to the system. The > >Apache process holds on to it until it dies. > > > >Brian Moon > >------------------------------------------------------------------------- > >Phorum Dev Team - http://phorum.org > >Making better forums with PHP > >------------------------------------------------------------------------- > > > >Look for my presentation at ApacheCon 2001. > >"Caching Dynamic Web Content to Increase Dependability and Performance" > >http://www.apachecon.com/ > > > > > > > >----- Original Message ----- > >From: "Andi Gutmans" <andi@zend.com> > >To: <brian@phorum.org>; <php-dev@lists.php.net> > >Sent: Monday, April 30, 2001 1:45 PM > >Subject: Re: [PHP-DEV] PHP 4.0 Bug #8889 Updated: Memory is not being freed. > > > > > > > 14MB of memory in use isn't necessarily that much. Some of that memory > > > might be in shared libraries (shared across the Apache processes). Are you > > > doing any big SQL queries in those scripts? > > > Do you have time to do some tests and let us know if things improve? > > > > > > Andi > > > > > > At 06:31 PM 4/30/2001 +0000, brian@phorum.org wrote: > > > >ID: 8889 > > > >User Update by: brian@phorum.org > > > >Status: Open > > > >Bug Type: Performance problem > > > >Description: Memory is not being freed. > > > > > > > >I am talking about nearly endless amounts. I saw Apache processes with > >as > > > >much as 14MB of memory in use. > > > > > > > >Brian. > > > > > > > >Previous Comments: > > > > > >--------------------------------------------------------------------------- > > > > > > > >[2001-04-29 19:59:56] zeev@php.net > > > >What kind of sizes are we talking about here? the Zend memory manager > > > >holds a memory cache, but we're talking at around 1MB per process max. > > > > > > > > > >--------------------------------------------------------------------------- > > > > > > > >[2001-01-26 18:45:45] brian@phorum.org > > > >Ok, this is just like what is described in > > > > > > >>http://marc.theaimsgroup.com/?l=php-dev&m=97923602322593&w=2 > > > >which > > > >contains a hacked up solution. It looks like it should be able to turn > > > >into a usable end solution. > > > > > > > > > >--------------------------------------------------------------------------- > > > > > > > >[2001-01-24 13:21:13] brian@phorum.org > > > >Hi guys, > > > > > > > >I do not have much information. I know that my Apache processes memory > >is > > > >growing by the minute. If I start a separate server on another port and > > > >serve only static pages and files through it, those process do not grow. > > > > > > > >I have tried what I remembered of gdb but have not come up with > > > >anything. I know I need to attach to a process and it seems I can `gdb > > > >{pid}` but that gives me nothing. How can I get some info for you > > > >guys? I do have --enable-debug. > > > > > > > >thanks, > > > > > > > >Brian. > > > >Phorum.org > > > > > > > > > >--------------------------------------------------------------------------- > > > > > > > > > > > >Full Bug description available at: > > > >http://bugs.php.net/?id=8889 > > > > > > > > > > > >-- > > > >PHP Development Mailing List > > > ><http://www.php.net/> > > > >To unsubscribe, e-mail: php-dev-unsubscribe@lists.php.net > > > >For additional commands, e-mail: php-dev-help@lists.php.net > > > >To contact the list administrators, e-mail: php-list-admin@lists.php.net > > > > > > > >