Re: [PHP4BETA] mem leak?

the problem is still here. i can reproduce it with another machine by installing the same software components: apache 1.3.11, php4 CVS, adabas-d. maybe it's not odbc but session handling that loses the memory? gaylord aulke Andi Gutmans wrote: > Please edit zend_fast_cache.h in the Zend/ directory and a line after > #define _ZEND_FAST_CACHE_H > add > #define ZEND_ENABLE_FAST_CACHE 0 > Also edit zend_alloc.h and change > MAX_CACHED_MEMORY to 1 > and > MAX_CACHED_ENTRIES to 1 > > See if this changes anything. > > Andi > > On Mon, 13 Mar 2000, Gaylord Aulke wrote: > > > hi, > > > > we tested a little bit more today and found the following strange phenomenon: > > we start apache and every httpd uses 0.6% of the available memory (according > > to "top"). > > > > while running, this percentage increases step by step. after 6 hours, every httpd > > uses 1.2% of the available memory. httpd's are started and stopped correctly. > > we have a minimum of 20 servers, 20 min.spare and 40 max. spare. the number > > of httpds changes frequently. the size of newly started httpds increases as > > said above (1.4% now). > > > > in my opinion the amount of shared memory the apache processes use increases. > > does this make sense? can it be PHP? > > > > regards, > > gaylord aulke > > > > > > > > > > Andi Gutmans wrote: > > > > > Sound strange. There are some inter-request cache's but I don't think they > > > are 500KB of size. Although if the size doesn't grow this might be it. Did > > > you compile with --disable-debug? > > > > > > Andi > > > > > > At 11:35 PM 3/12/00 +0100, Gaylord Aulke wrote: > > > >we are currently analyzing the system to track down the cause of the > > > >memory leak. could also be syslogd or some other component. > > > > > > > >the system has an average of 96 HTTPDs open but sometimes this number > > > >increases to 230 for a few seconds. > > > > > > > >the machine has 768MB RAM. after apache is running for a few minutes, it > > > >starts > > > >allocating more and more memory. 500-1000 KB in 5 seconds are allocated > > > >and not freed until apache is shut down. > > > > > > > >we switched back to PHP3 for now but start our 3rd PHP4-Approach > > > >tomorrow. > > > >maybe we have more info then... > > > > > > > >gaylord aulke > > > >agi, stuttgart, germany > > > > > > > >PS: (the site's name is > > > >http://www.knowone.de) > > > > > > > >Andi Gutmans wrote: > > > > > > > > > > Well I'm not saying it isn't PHP but the fact that it's Beta > > > > > doesn't mean > > > > > much. We're actually quite close to a release candidate within a few > > > > > weeks. > > > > > PHP frees every requests memory automatically (even if the internal engine > > > > > leaks) at the end of each request. Of course there could be a leak > > > > > somewhere as there are some places which don't use the special memory > > > > > manager but it would probably be a pretty isolated case. > > > > > The only way we can debug your problem is if we have enough information as > > > > > to when it happens. I'm aware it is hard for you to track this problem > > > > down. > > > > > By the way, do the httpd's keep on growing and growing? Or do they > > > > > stabilize at a certain size? > > > > > > > > > > Andi > > > > > > > > > > At 02:20 AM 3/11/00 +0100, Gaylord Aulke wrote: > > > > > >hmmm. i try to find out which script causes the mem leak. it seems to > > > > > >happen only with concurrent request. we had no probs with our > > > > > >inhouse test system. i am not even sure if it is php that causes > > > > > >the memory loss but it's the only beta-software on the system... > > > > > > > > > > > >persistent connections did not work with my system configuration, > > > > > >so i use regular connects. > > > > > > > > > > > >gaylord aulke > > > > > > > > > > > > > > > > > >Andi Gutmans wrote: > > > > > > > > > > > > > > As the script memory is completely freed after each request this > > > > might have > > > > > > > something to do with the ODBC/Adabas support you're using. > > > > > > > Are you using persistent connections? > > > > > > > Is there any chance you can find the script which is causing this > > > > trouble > > > > > > > and cut it down as much as possible? > > > > > > > > > > > > > > Andi > > > > > > > > > > > > > > At 11:35 PM 3/10/00 +0100, Gaylord Aulke wrote: > > > > > > > >here my report: > > > > > > > >we compiled and built the current cvs and after that, the > > > > > > > >error did > > > > > > not occur > > > > > > > >anymore. > > > > > > > >the memory leak that brings my server down has increased by > > > > > > > >at least a > > > > > > > >factor of > > > > > > > >two after installing the new build. > > > > > > > > > > > > > > > >we switched back to php3.0.15 for now. > > > > > > > > > > > > > > > >gaylord aulke > > > > > > > > > > > > > > > >Gaylord Aulke wrote: > > > > > > > > > > > > > > > > > Okay, we are working on it. > > > > > > > > > in the meantime we changed the script so that it frees > > > > > > > > > all > > > > > > odbc-results and > > > > > > > > > closes the connection but the error still occurs. > > > > > > > > > > > > > > > > > > but the memory leak is much bigger than reported by > > > > > > > > > this error > > > > message. > > > > > > > > > i think we currently have 100-200 php-requests/minute > > > > > > > > > and lose > > > > > > 500KB every > > > > > > > > > 5-6 seconds. > > > > > > > > > > > > > > > > > > if you need more info to locate the problem, please > > > > > > > > > send me an > > > > email. i > > > > > > > > > can do some checks now on the running system with 280 > > > > > > > > > users on it. > > > > > > > > > > > > > > > > > > regards, > > > > > > > > > gaylord aulke > > > > > > > > > > > > > > > > > > Andi Gutmans wrote: > > > > > > > > > > > > > > > > > > > Can you please try and update your Zend CVS tree > > > > > > > > > > and see if I > > > > > > managed to > > > > > > > > > > fix the problem. I think I have found a leak but > > > > > > > > > > I'm not sure > > > > this is > > > > > > > > what > > > > > > > > > > effected you. > > > > > > > > > > > > > > > > > > > > Andi > > > > > > > > > > > > > > > > > > > > At 10:21 PM 3/10/00 +0100, Gaylord Aulke wrote: > > > > > > > > > > >hi, > > > > > > > > > > > > > > > > > > > > > >we have exactly the same problem. our apache > > > > > > > > > > >keeps leaking > > > > > > > > > > >memory. 500 MB in 2 Hours! And then the system > > > > > > > > > > >swaps > > > > > > > > > > >and dies. > > > > > > > > > > > > > > > > > > > > > >PHP4, CVS-Version 03/10/2000 > > > > > > > > > > > > > > > > > > > > > >message from error-log: > > > > > > > > > > >zend_operators.c(741) : Freeing 0x08399DFC (3 > > > > > > > > > > >bytes), > > > > > > > > > > > > > > > > > > > > >>script=/home/www/knowone4/daheim/anzeige_aufgeben.php > > > > > > > > > > > > > > > > > > > > > >this message arrises every 20 seconds. > > > > > > > > > > > > > > > > > > > > > >we are using ODBC/ADABAS and sessions. the > > > > > > > > > > >same scripts > > > > > > > > > > >work fine with the same apache and php3. > > > > > > > > > > > > > > > > > > > > > >anyone got an idea? > > > > > > > > > > > > > > > > > > > > > >btw: we are not freeing our odbc-results and > > > > > > > > > > >connections. can > > > > > > > > > > >this be the problem? > > > > > > > > > > > > > > > > > > > > > >regards, > > > > > > > > > > >gaylord aulke > > > > > > > > > > > > > > > > > > > > > >Teodor Cimpoesu wrote: > > > > > > > > > > > > > > > > > > > > > > > ./zend_execute.c(1695) : Freeing > > > > > > > > > > > > 0x0818C8AC (12 bytes), > > > > > > > > > > > > > > > > > > > > > > > > script=/opt/apache.fuel/htdocs/phorum/index.php > > > > > > > > > > > > ./zend_execute.c(1695) : Freeing > > > > > > > > > > > > 0x0814C20C (12 bytes), > > > > > > > > > > > > > > > > > > > > > > > > script=/opt/apache.fuel/htdocs/phorum/index.php > > > > > > > > > > > > ./zend_execute.c(1695) : Freeing > > > > > > > > > > > > 0x08154DD4 (12 bytes), > > > > > > > > > > > > > > > > > > > > > > > > script=/opt/apache.fuel/htdocs/phorum/index.php > > > > > > > > > > > > ./zend_execute.c(1695) : Freeing > > > > > > > > > > > > 0x0815E05C (12 bytes), > > > > > > > > > > > > > > > > > > > > > > > > script=/opt/apache.fuel/htdocs/phorum/index.php > > > > > > > > > > > > (CVS snapshot of few minutes ago) > > > > > > > > > > > > > > > > > > > > > > > > The page producing this is the index.php > > > > > > > > > > > > from phorum3.0.8 > > > > > > > > > > > > > > > > > > > > > > > > -- > > > > > > > > > > > > CIMPOESU Teodor, Web Programmer > > > > > > > > > > > > @ DIGICOM S.A. Bucharest, Romania > > > > > > > > > > > > @ Internet, site development > > > > > > > > > > > > @ see > > > > > > > > > > > > http://internet.digiro.net/ > > > > > > > > > > > > > > > > > > > > > > > > -- > > > > > > > > > > > > PHP 4.0 Beta Mailing List <�-ܔ > > > > > > > > > > > > �� p��\��http://www.php.net/version4/> > > > > > > > > > > > > To unsubscribe, e-mail: > > > > > > > > > > > > php4beta-unsubscribe@lists.php.net > > > > > > > > > > > > For additional commands, e-mail: > > > > > > > > > > > > php4beta-help@lists.php.net > > > > > > > > > > > > To contact the list administrators, > > > > > > > > > > > > e-mail: > > > > > > > > php4beta-admin@lists.php.net > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > >-- > > > > > > > > > > >PHP 4.0 Beta Mailing List > > > > > > > > > > ><http://www.php.net/version4/> > > > > > > > > > > >To unsubscribe, e-mail: > > > > > > > > > > >php4beta-unsubscribe@lists.php.net > > > > > > > > > > >For additional commands, e-mail: > > > > > > > > > > >php4beta-help@lists.php.net > > > > > > > > > > >To contact the list administrators, e-mail: > > > > > > php4beta-admin@lists.php.net > > > > > > > > > > > > > > > > > > > > --- > > > > > > > > > > Andi Gutmans <andi@zend.com> > > > > > > > > > > > > > > > > > > > > http://www.zend.com/ > > > > > > > > > > > > > > > > > > > > -- > > > > > > > > > > PHP 4.0 Beta Mailing List > > > > > > > > > > <http://www.php.net/version4/> > > > > > > > > > > To unsubscribe, e-mail: > > > > > > > > > > php4beta-unsubscribe@lists.php.net > > > > > > > > > > For additional commands, e-mail: > > > > > > > > > > php4beta-help@lists.php.net > > > > > > > > > > To contact the list administrators, e-mail: > > > > > > php4beta-admin@lists.php.net > > > > > > > > > > > > > > > > > > -- > > > > > > > > > PHP 4.0 Beta Mailing List > > > > > > > > > <http://www.php.net/version4/> > > > > > > > > > To unsubscribe, e-mail: > > > > > > > > > php4beta-unsubscribe@lists.php.net > > > > > > > > > For additional commands, e-mail: > > > > > > > > > php4beta-help@lists.php.net > > > > > > > > > To contact the list administrators, e-mail: > > > > > > php4beta-admin@lists.php.net > > > > > > > > > > > > > > --- > > > > > > > Andi Gutmans <andi@zend.com> > > > > > > > http://www.zend.com/ > > > > > > > > > > --- > > > > > Andi Gutmans <andi@zend.com> > > > > > http://www.zend.com/ > > > > > > --- > > > Andi Gutmans <andi@zend.com> > > > http://www.zend.com/ > >