From: antoine dot bajolet at tdf dot fr
Operating system: Linux 2.4.29
PHP version: 4.3.10
PHP Bug Type: HTTP related
Bug description: memory leak in fopen wrappers ?
Description:
------------
It seems that there is a memory leak in fopen wrappers to HTTP.
With a minimal compilation of PHP :
./configure --disable-all --enable-sockets --without-pear
--enable-memory-limit --without-pcre-regex --without-mysql
And the first code above, the memory used increased continuously.
(the -n flag is used to ignore any php.ini script. All parameters are
default).
#sapi/cli/php -n script1.php
12160
13536
13672
13736
13800
13864
13928
13992
14056
14120
14184
... still increasing
With a classic fopen, works fine
#sapi/cli/php -n script2.php
12128
12320
12336
12336
12336
12336
12336
12336
12336
12336
12336
... still stable
This is very annoying because we are writing a small php daemon using
periodics requests on HTTP hosts.
For more infos :
#ldd sapi/cli/php
libcrypt.so.1 => /lib/libcrypt.so.1 (0x4001b000)
libresolv.so.2 => /lib/libresolv.so.2 (0x40049000)
libm.so.6 => /lib/i686/libm.so.6 (0x4005b000)
libdl.so.2 => /lib/libdl.so.2 (0x4007d000)
libnsl.so.1 => /lib/libnsl.so.1 (0x40081000)
libc.so.6 => /lib/i686/libc.so.6 (0x40096000)
/lib/ld-linux.so.2 => /lib/ld-linux.so.2 (0x40000000)
/lib/libcrypt.so.1 -> libcrypt-2.3.2.so
/lib/libresolv.so.2 -> libresolv-2.3.2.so
Regards
Antoine Bajolet
Reproduce code:
---------------
With this, memory problem :
<?php
/* script1.php */
while(true){
echo memory_get_usage()."\n";
$handler = fopen('http://some.thing/','r');
fclose($handler);
sleep(2);
} // while
?>
With this, no memory problem
<?php
/* script2.php */
while(true){
echo memory_get_usage()."\n";
$handler = fopen('/etc/hosts','r');
fclose($handler);
sleep(2);
} // while
?>
Expected result:
----------------
The memory used has to be stable, not increasing.
--
Edit bug report at http://bugs.php.net/?id=32255&edit=1
--
Try a CVS snapshot (php4): http://bugs.php.net/fix.php?id=32255&r=trysnapshot4
Try a CVS snapshot (php5.0):
http://bugs.php.net/fix.php?id=32255&r=trysnapshot50
Try a CVS snapshot (php5.1):
http://bugs.php.net/fix.php?id=32255&r=trysnapshot51
Fixed in CVS: http://bugs.php.net/fix.php?id=32255&r=fixedcvs
Fixed in release: http://bugs.php.net/fix.php?id=32255&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=32255&r=needtrace
Need Reproduce Script: http://bugs.php.net/fix.php?id=32255&r=needscript
Try newer version: http://bugs.php.net/fix.php?id=32255&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=32255&r=support
Expected behavior: http://bugs.php.net/fix.php?id=32255&r=notwrong
Not enough info:
http://bugs.php.net/fix.php?id=32255&r=notenoughinfo
Submitted twice:
http://bugs.php.net/fix.php?id=32255&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=32255&r=globals
PHP 3 support discontinued: http://bugs.php.net/fix.php?id=32255&r=php3
Daylight Savings: http://bugs.php.net/fix.php?id=32255&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=32255&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=32255&r=gnused
Floating point limitations: http://bugs.php.net/fix.php?id=32255&r=float
No Zend Extensions: http://bugs.php.net/fix.php?id=32255&r=nozend
MySQL Configuration Error: http://bugs.php.net/fix.php?id=32255&r=mysqlcfg
