Re: [PHP4BETA] mem leak?

I'm cc'ing this to the php-dev list. What is your ./configure line for PHP? What about Apache? Do you use any modules such as mod_auth_mysql with your Apache server? It sounds too strange for it to be PHP but it might be. We have had no such leaks on our web server. Andi On Mon, 13 Mar 2000, Gaylord Aulke wrote: > i changed the settings you described and compiled php: > ( > php:make clean > php:make > php:make install > apache:make > apache:make install > ) > and restarted apache. unfortunately the behaviour did not change. > i included the top-output after 25 minutes at the end of this mail. > > (when starting apache, httpd had 0.3% of the machine's memory) > (the SIZE entry shows that each newly started httpd process allocates > more memory). > > regards, > gaylord aulke > > > 4:25pm up 8 days, 12:00, 6 users, load average: 1.15, 1.12, 1.01 > 205 processes: 203 sleeping, 2 running, 0 zombie, 0 stopped > CPU states: 88.3% user, 11.6% system, 0.0% nice, 0.0% idle > Mem: 776892K av, 718084K used, 58808K free, 599264K shrd, 209908K buff > Swap: 1028120K av, 12076K used, 1016044K free 110800K cached > > PID USER PRI NI DSIZE SIZE RSS SHARE STAT LIB %CPU %MEM TIME COMMAND > 23549 adabas 17 -3 4082M 106M 102M 48088 R < 0 55.0 13.4 779:16 db:knowone > 23538 root 0 0 4020M 52968 51M 52872 S 0 0.0 6.8 0:00 db:knowone > 23545 adabas -3 -3 4023M 47040 45M 43900 S < 0 0.0 6.0 1:31 db:knowone > 23558 adabas 0 0 4020M 40404 39M 40304 S 0 0.0 5.1 0:17 db:knowone > 23559 adabas 0 0 4020M 40404 39M 40304 S 0 0.0 5.1 8:47 db:knowone > 23560 adabas 0 0 4020M 40404 39M 40304 S 0 0.0 5.1 0:17 db:knowone > 23561 adabas 0 0 4020M 40404 39M 40304 S 0 0.0 5.1 8:33 db:knowone > 23548 adabas -3 -3 4021M 7400 7344 7044 S < 0 0.0 0.9 0:00 db:knowone > 9776 wwwrun 0 0 3975M 6728 6728 2696 S 0 1.5 0.8 0:05 httpd > 9787 wwwrun 0 0 3975M 6472 6472 2732 S 0 1.1 0.8 0:05 httpd > 9779 wwwrun 0 0 3975M 6432 6432 2724 S 0 0.0 0.8 0:06 httpd > 9747 wwwrun 2 0 3977M 6376 6376 2720 S 0 0.7 0.8 0:05 httpd > 9791 wwwrun 0 0 3975M 6304 6304 2708 S 0 0.5 0.8 0:05 httpd > 9749 wwwrun 0 0 3974M 6224 6224 2656 S 0 0.9 0.8 0:05 httpd > 9806 wwwrun 0 0 3974M 6224 6224 2704 S 0 0.1 0.8 0:05 httpd > 9746 wwwrun 0 0 3974M 6208 6208 2648 S 0 0.0 0.7 0:04 httpd > 9766 wwwrun 0 0 3974M 6176 6176 2724 S 0 0.0 0.7 0:05 httpd > 9751 wwwrun 0 0 3974M 6156 6156 2704 S 0 0.7 0.7 0:04 httpd > 9763 wwwrun 0 0 3974M 6128 6128 2664 S 0 0.0 0.7 0:04 httpd > 9774 wwwrun 0 0 3974M 6120 6120 2704 S 0 0.0 0.7 0:04 httpd > 9764 wwwrun 0 0 3974M 6072 6072 2708 S 0 0.0 0.7 0:05 httpd > 9752 wwwrun 0 0 3974M 6040 6040 2716 S 0 0.3 0.7 0:05 httpd > 9772 wwwrun 0 0 3974M 6036 6036 2668 S 0 0.7 0.7 0:05 httpd > 9793 wwwrun 1 0 3974M 6028 6028 2664 S 0 1.8 0.7 0:04 httpd > 9786 wwwrun 0 0 3974M 5996 5996 2664 S 0 0.0 0.7 0:04 httpd > 9784 wwwrun 0 0 3974M 5980 5980 2664 S 0 0.0 0.7 0:04 httpd > 9759 wwwrun 0 0 3976M 5948 5948 2660 S 0 2.0 0.7 0:04 httpd > 9755 wwwrun 0 0 3974M 5940 5940 2668 S 0 0.0 0.7 0:04 httpd > 9750 wwwrun 0 0 3974M 5928 5928 2656 S 0 0.0 0.7 0:05 httpd > 9783 wwwrun 0 0 3974M 5928 5928 2724 S 0 0.0 0.7 0:04 httpd > 9794 wwwrun 0 0 3974M 5920 5920 2660 S 0 0.5 0.7 0:04 httpd > 9785 wwwrun 0 0 3974M 5904 5904 2668 S 0 0.0 0.7 0:04 httpd > 9802 wwwrun 0 0 3974M 5900 5900 2720 S 0 0.0 0.7 0:04 httpd > 9796 wwwrun 0 0 3974M 5896 5896 2656 S 0 0.0 0.7 0:05 httpd > 9748 wwwrun 0 0 3974M 5884 5884 2652 S 0 0.0 0.7 0:04 httpd > 9789 wwwrun 0 0 3974M 5880 5880 2668 S 0 0.0 0.7 0:05 httpd > 9788 wwwrun 1 0 3974M 5876 5876 2652 S 0 0.9 0.7 0:05 httpd > 9767 wwwrun 0 0 3974M 5864 5864 2728 S 0 0.0 0.7 0:05 httpd > > > 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 > > > > > > > > > > > > > <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/ > > > >