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

Edit report at https://bugs.php.net/bug.php?id=60670&edit=1 ID: 60670 Updated by: fat@php.net Reported by: gwenmael dot rouxel at neovote dot com Summary: When under load, PHP-FPM master process silently crashes -Status: Open +Status: Feedback Type: Bug Package: FPM related Operating System: Debian Lenny PHP Version: 5.3.8 Block user comment: N Private report: N New Comment: Thank you for this bug report. To properly diagnose the problem, we need a backtrace to see what is happening behind the scenes. To find out how to generate a backtrace, please read http://bugs.php.net/bugs-generating-backtrace.php for *NIX and http://bugs.php.net/bugs-generating-backtrace-win32.php for Win32 Once you have generated a backtrace, please submit it to this bug report and change the status back to "Open". Thank you for helping us make PHP better. Previous Comments: ------------------------------------------------------------------------ [2012-01-06 13:35:41] gwenmael dot rouxel at neovote dot com 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 this bug report at https://bugs.php.net/bug.php?id=60670&edit=1