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Bug #41028 mod_fastcgi and php process 100% cpu
Submitted: 2007-04-09 14:59 UTC Modified: 2007-04-11 14:13 UTC
From: vaidotas dot d at gmail dot com Assigned:
Status: Closed Package: CGI/CLI related
PHP Version: 5.2.1 OS: Linux 2.6.20
Private report: No CVE-ID: None
View Developer Edit
 [2007-04-09 14:59 UTC] vaidotas dot d at gmail dot com 
Description:
------------
Apache 2.0.59 + mod_fastcgi + php 5.2.1. Sometimes php process becomes R in process list and takes 100% cpu. At that time php page cannot be served, instead i get 500 internal server error. Strace of that process i get: strace -p 28973
...........
clone(child_stack=0, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0xb793c0c8) = 6977
wait4(-1, [{WIFEXITED(s) && WEXITSTATUS(s) == 0}], 0, NULL) = 6976
clone(child_stack=0, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0xb793c0c8) = 6978
--- SIGCHLD (Child exited) @ 0 (0) ---
wait4(-1, [{WIFEXITED(s) && WEXITSTATUS(s) == 0}], 0, NULL) = 6978
clone(child_stack=0, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0xb793c0c8) = 6981
--- SIGCHLD (Child exited) @ 0 (0) ---
wait4(-1, [{WIFEXITED(s) && WEXITSTATUS(s) == 0}], 0, NULL) = 6981
clone(child_stack=0, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0xb793c0c8) = 6983
..........

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 [2007-04-09 15:03 UTC] tony2001@php.net 
Please try using this CVS snapshot:

  http://snaps.php.net/php5.2-latest.tar.gz
 
For Windows:
 
  http://snaps.php.net/win32/php5.2-win32-latest.zip
 [2007-04-11 14:05 UTC] vaidotas at gmail dot com 
php 5.2.2-dev solved the problem.
 [2007-04-11 14:13 UTC] tony2001@php.net 
Great, thanks for letting us know.
 
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