Paul,
First off, this is definitely not what's killing your server. The reason
for this is simple - the leak reports you see in the error log are only for
debug purposes. PHP takes care of these leaks automatically, and frees
these blocks. Such leaks are not a good thing (they imply there's an
implementation bug in PHP), but thanks to PHP's safety net, they're not a
very critical thing either.
Secondly, have you tried using PHP 4.0.6? Its memory handling should be
significantly better than any of the previous PHP 4.0 versions.
Thirdly, in order to fix the leaks that happen on your web site, we'd need
the smallest self-contained script (or set of scripts) that causes these
messages to display. Looking at the code snippet that you've pasted, my
guess is that the cause is not there, but in the required decision.php
file, or in an auto prepended/appended file, that you might have. If you
can take these files as a starting point, then cut them down as much as you
can, removing any external dependencies, such as database connectivity
(while checking at every step of the way that the leak still occurs) -
chances are we'll be able to fix it quite quickly.
Zeev
At 18:44 20/07/2001, Paul Strange wrote:
>On Friday 20 July 2001 07:22, Johnson, Kirk wrote:
> > > -----Original Message-----
> > > From: Paul Strange [mailto:[EMAIL PROTECTED]]
> > > Sent: Thursday, July 19, 2001 1:18 PM
> > > To: [EMAIL PROTECTED]
> > > Subject: [PHP] Memory Leaks
> > >
> > > When we review the error_log from apache, we see the following alot:
> > >
> > > zend_hash.c(291) : Freeing 0x0812738C (65 bytes),
> > > script=/www/dmp/app/index.php
> > > Last leak repeated 152 times
> >
> > Paul, I was hoping to see a response to your post from one of our more
> > "technical" list members. That's not me, unfortunately.
> >
> > We had a recent bout with this same thing. We have a home-grown database
> > abstraction layer (written in C) that had some memory leaks. As soon as we
> > fixed that code, these "Freeing" errors went away. That's the sum total of
> > what I know about this, sorry :(
> >
> > Did you configure PHP with the --enable-debug switch? If not, you may want
> > to try it, you may get some additional info into the error log.
> >
> > Good luck.
> >
> > Kirk
>
>Kirk,
>I checked our configuration with a phpinfo (). --enable-debug is there and
>part of the configuration. I have checked the error logs again and here is
>some more information:
>
><<<<< Start error_log >>>>>
>zend_hash.c(291) : Freeing 0x08126FCC (65 bytes),
>script=/www/dmp/app/index.php
>Last leak repeated 274 times
>zend_compile.c(116) : Freeing 0x081230AC (30 bytes),
>script=/www/dmp/app/index.php
>Last leak repeated 4 times
>./zend_execute.c(378) : Freeing 0x0818B04C (17 bytes),
>script=/www/dmp/app/index.php
>zend_variables.c(127) : Actual location (location was relayed)
>./zend_execute.c(375) : Freeing 0x08121E44 (12 bytes),
>script=/www/dmp/app/index.php
>./zend_execute.c(1517) : Freeing 0x081882BC (12 bytes),
>script=/www/dmp/app/index.php
>Last leak repeated 7 times
>./zend_execute.c(1625) : Freeing 0x081556E4 (12 bytes),
>script=/www/dmp/app/index.php
>zend_hash.c(461) : Freeing 0x0818B094 (44 bytes),
>script=/www/dmp/app/index.php
>Last leak repeated 5 times
>zend_hash.c(202) : Freeing 0x0812280C (20 bytes),
>script=/www/dmp/app/index.php
>Last leak repeated 12 times
>./zend_execute.c(1536) : Freeing 0x0818C4F4 (48 bytes),
>script=/www/dmp/app/index.php
>Last leak repeated 3 times
>zend_API.c(313) : Freeing 0x081581FC (6 bytes), script=/www/dmp/app/index.php
>Last leak repeated 17 times
>zend_API.c(309) : Freeing 0x081581BC (12 bytes),
>script=/www/dmp/app/index.php
>Last leak repeated 17 times
>php_mysql.c(1389) : Freeing 0x0817B044 (48 bytes),
>script=/www/dmp/app/index.php
>zend_API.c(188) : Actual location (location was relayed)
>./zend_execute.c(140) : Freeing 0x08169974 (48 bytes),
>script=/www/dmp/app/index.php
>zend_variables.c(150) : Actual location (location was relayed)
>Last leak repeated 1 time
>zend_hash.c(433) : Freeing 0x081555C4 (16 bytes),
>script=/www/dmp/app/index.php
>zend_hash.c(427) : Freeing 0x08123B34 (35 bytes),
>script=/www/dmp/app/index.php
>Last leak repeated 2 times
>file.c(1922) : Freeing 0x0816A0B4 (9 bytes), script=/www/dmp/app/index.php
>zend_API.c(499) : Freeing 0x08160B3C (10 bytes),
>script=/www/dmp/app/index.php
>Last leak repeated 2 times
>zend_API.c(495) : Freeing 0x08122304 (12 bytes),
>script=/www/dmp/app/index.php
>Last leak repeated 2 times
>reg.c(534) : Freeing 0x08179EAC (48 bytes), script=/www/dmp/app/index.php
>zend_API.c(188) : Actual location (location was relayed)
>./zend_execute.c(386) : Freeing 0x08121E84 (12 bytes),
>script=/www/dmp/app/index.php
>main.c(1083) : Freeing 0x08176DF4 (48 bytes), script=/www/dmp/app/index.php
>zend_API.c(188) : Actual location (location was relayed)
>main.c(1082) : Freeing 0x081222C4 (12 bytes), script=/www/dmp/app/index.php
>main.c(1137) : Freeing 0x0814561C (12 bytes), script=/www/dmp/app/index.php
>main.c(1119) : Freeing 0x081619B4 (47 bytes), script=/www/dmp/app/index.php
>main.c(1116) : Freeing 0x081609BC (12 bytes), script=/www/dmp/app/index.php
>main.c(1104) : Freeing 0x0812447C (48 bytes), script=/www/dmp/app/index.php
>zend_API.c(188) : Actual location (location was relayed)
>main.c(1103) : Freeing 0x08160A5C (12 bytes), script=/www/dmp/app/index.php
>php_variables.c(169) : Freeing 0x081608BC (12 bytes),
>script=/www/dmp/app/index.php
>Last leak repeated 111 times
>string.c(1964) : Freeing 0x08122E2C (29 bytes), script=/www/dmp/app/index.php
>Last leak repeated 111 times
>main.c(967) : Freeing 0x081609FC (48 bytes), script=/www/dmp/app/index.php
>zend_API.c(188) : Actual location (location was relayed)
>main.c(966) : Freeing 0x081641BC (12 bytes), script=/www/dmp/app/index.php
>php_variables.c(231) : Freeing 0x0814A0D4 (48 bytes),
>script=/www/dmp/app/index.php
>zend_API.c(188) : Actual location (location was relayed)
>Last leak repeated 1 time
>php_variables.c(230) : Freeing 0x0817092C (12 bytes),
>script=/www/dmp/app/index.php
>Last leak repeated 1 time
>main.c(1061) : Freeing 0x0814A9CC (48 bytes), script=/www/dmp/app/index.php
>zend_API.c(188) : Actual location (location was relayed)
>main.c(1060) : Freeing 0x08166254 (12 bytes), script=/www/dmp/app/index.php
>zend_ptr_stack.c(29) : Freeing 0x0815BBB4 (256 bytes),
>script=/www/dmp/app/index.php
>Last leak repeated 2 times
>zend_stack.c(27) : Freeing 0x0816B72C (256 bytes),
>script=/www/dmp/app/index.php
>Last leak repeated 5 times
><<<<< End error_log >>>>>
>
>This stuff is killing our server. Our current solution is to bounce apache
>every 15 minutes. However if the traffic gets heavy, then all the memory
>gets sucked up and a reboot is required. I would greatly appreciate any help
>I could get on this matter as it is way beyond my skills.
>
>--
>
>Paul Strange
>Lead Programmer
>Level 67 LC
>---
>eMail: [EMAIL PROTECTED] Office: 801.486.4686 Fax: 801.994.0467
>
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--
Zeev Suraski <[EMAIL PROTECTED]>
CTO & co-founder, Zend Technologies Ltd. http://www.zend.com/
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