Bug #60670 [NEW]: When under load, PHP-FPM master process silently crashes

From: Date: Fri, 06 Jan 2012 13:35:41 +0000
Subject: Bug #60670 [NEW]: When under load, PHP-FPM master process silently crashes
Groups: php.bugs 
Request: Send a blank email to php-bugs+get-166256@lists.php.net to get a copy of this message 
From:             
Operating system: Debian Lenny
PHP version:      5.3.8
Package:          FPM related
Bug Type:         Bug
Bug description:When under load, PHP-FPM master process silently crashes

Description:
------------
I ran some load tests on a virtual machine which has 16GB ram and four 8Ghz
VCores. 

The tests were run using JMeter.
When ~300 simultaneous connections (10 request loop per connection) to FPM
exist (through NGinx), The master process crashes and I get 502 errors. The
remaining child processes continue executing their scripts then terminate.

I use a static pool configuration, and no matter what the child processes
number is, it crashes.


-- 
Edit bug report at https://bugs.php.net/bug.php?id=60670&edit=1
-- 
Try a snapshot (PHP 5.4):            https://bugs.php.net/fix.php?id=60670&r=trysnapshot54
Try a snapshot (PHP 5.3):            https://bugs.php.net/fix.php?id=60670&r=trysnapshot53
Try a snapshot (trunk):              https://bugs.php.net/fix.php?id=60670&r=trysnapshottrunk
Fixed in SVN:                        https://bugs.php.net/fix.php?id=60670&r=fixed
Fixed in SVN and need be documented: https://bugs.php.net/fix.php?id=60670&r=needdocs
Fixed in release:                    https://bugs.php.net/fix.php?id=60670&r=alreadyfixed
Need backtrace:                      https://bugs.php.net/fix.php?id=60670&r=needtrace
Need Reproduce Script:               https://bugs.php.net/fix.php?id=60670&r=needscript
Try newer version:                   https://bugs.php.net/fix.php?id=60670&r=oldversion
Not developer issue:                 https://bugs.php.net/fix.php?id=60670&r=support
Expected behavior:                   https://bugs.php.net/fix.php?id=60670&r=notwrong
Not enough info:                     https://bugs.php.net/fix.php?id=60670&r=notenoughinfo
Submitted twice:                     https://bugs.php.net/fix.php?id=60670&r=submittedtwice
register_globals:                    https://bugs.php.net/fix.php?id=60670&r=globals
PHP 4 support discontinued:          https://bugs.php.net/fix.php?id=60670&r=php4
Daylight Savings:                    https://bugs.php.net/fix.php?id=60670&r=dst
IIS Stability:                       https://bugs.php.net/fix.php?id=60670&r=isapi
Install GNU Sed:                     https://bugs.php.net/fix.php?id=60670&r=gnused
Floating point limitations:          https://bugs.php.net/fix.php?id=60670&r=float
No Zend Extensions:                  https://bugs.php.net/fix.php?id=60670&r=nozend
MySQL Configuration Error:           https://bugs.php.net/fix.php?id=60670&r=mysqlcfg

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