Bug #9431 Updated: httpd processes using excessive cpu

ID: 9431 Updated by: php-bugs@lists.php.net Reported By: ddil@inetmi.com -Status: Feedback +Status: No Feedback Bug Type: Performance problem Operating System: 4.0.4pl1 PHP Version: Linux (redhat 6.2) New Comment: No feedback was provided for this bug for over a month, so it is being suspended automatically. If you are able to provide the information that was originally requested, please do so and change the status of the bug back to "Open". Previous Comments: ------------------------------------------------------------------------ [2001-12-12 18:54:08] yohgaki@php.net Sorry my mozilla overwirtes From/OS/PHP Version/Summary again. ------------------------------------------------------------------------ [2001-12-12 18:48:37] yohgaki@php.net Status = feedback ------------------------------------------------------------------------ [2001-12-12 18:48:15] yohgaki@php.net Could you try 4.1.0 and report the result? ------------------------------------------------------------------------ [2001-04-29 11:32:19] jmoore@php.net reclassify ------------------------------------------------------------------------ [2001-02-23 16:06:24] ddil@inetmi.com It seems that after a while of server inactivity, the apache processes go into a mode where they continue to just use cpu - the processes become unseable for processing http requests since they just stay in this state. A server restart is needed to correct the problem. A process stack listing shows the process to be within the PHP module at the time: 0x400c2248: chunk_free + 0x270 (404407f4, 8118740, 4042f0f3) 0x400c1fba: __cfree + 0xaa (8118740, 404407f4, 4043da80, 4042f0f3, 624407f4, 6e9f190) + 34 0x4037ebb0: zend_hash_del_key_or_index + 0x1d8 (8111048, 4042f0ea, 9, 8da99e0, 0, 404407f4) + 10 0x4037c0af: zend_unregister_functions + 0x67 (4043da14, ffffffff, 0, 404407f4, 81329f8) 0x4037c1bb: module_destructor + 0x73 (8132a28, 404407f4, 4000ae60, bffffdc4) 0x4037ec24: zend_hash_destroy + 0x30 (40455760, 404407f4) 0x4037b2f5: zend_shutdown + 0x25 (404407f4) 0x4038a4de: php_module_shutdown + 0x32 (404407f4) 0x4038a4a5: php_module_shutdown_wrapper + 0x15 (40437840, 403887f8) 0x40388817: php_child_exit_handler + 0x1f (80d15b0, 8151c70, 18, 40437940) 0x0806fa61: ap_child_exit_modules + 0x49 (8151c70, 80d15b0) 0x080758d5: clean_child_exit + 0x1d (0) 0x08077587: just_die + 0x1f (a) 0x080775a9: usr1_handler + 0x15 (a, 0, 0, 2b, 2b, bffffdc4) + dc 0x40086c68: sigaction + 0x268 (8126e70, 81479d8, 814dfa8, 6c060002, 2000a0a, c65451e8) + 18 0x080788b7: child_main + 0x1b7 (b, b, 0) 0x08078ebc: make_child + 0x118 (80d15b0, b, 3a8ad8e0, 401581ec, 4053e480, 0) + a0 0x08079236: perform_idle_server_maintenance + 0x2b2 (401581ec, ffffffff, 0, d, 0) 0x08079765: standalone_main + 0x355 (2, bffffdc4, bffffdc4, 40013ed0, 8049c54, 80cc6a4) + 30 0x08079d33: main + 0x357 (2, bffffdc4, bffffdd0, 40013868, 2, 8050600) 0x400809cb: __libc_start_main + 0xff (80799dc, 2, bffffdc4, 804fc60, 80b127c, 4000ae60) + 40000248 PHP configuration options listed below: ./configure --prefix=/usr --with-apxs=/usr/sbin/httpd/bin/apxs --with-config-file-path=/etc/httpd --enable-safe-mode --with-exec-dir=/usr/sbin --with-system-regex --disable-debug --with-zlib --with-dbdm --with-db2 --enable-debugger --enable-magic-quotes --enable-track-vars --enable-sysvsem --enable-sysvshm --enable-track-vars --with-xml --with-ftp --with-pgsql --with-cybercash=/usr/src/cybercash/mck-3.3.0-i586-pc-linux-gnulibc2.1 glibc version is 2.1.3 php module was compiled with egcs-2.91.66 apache version is 1.3.14 kernel version 2.2.14 We also experienced this problem with PHP version 4.0.2. After upgrading to the latest PHP, is seems that the problem is occuring less frequently. ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/?id=9431&edit=1