#26478 [Opn->Fbk]: Segfault under load with scripts that call MySQL

From:	iliaa@php.net	Date:	Mon, 01 Dec 2003 00:23:50 +0000
Subject:	#26478 [Opn->Fbk]: Segfault under load with scripts that call MySQL
References:	1	Groups:	php.bugs
Request:	Send a blank email to php-bugs+get-51405@lists.php.net to get a copy of this message

 ID:               26478
 Updated by:       iliaa@php.net
 Reported By:      fillmore at nrcan dot gc dot ca
-Status:           Open
+Status:           Feedback
 Bug Type:         Reproducible crash
 Operating System: Solaris 8 (SPARC)
 PHP Version:      4.3.4
 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

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.

When generating a backtrace make sure your PHP has been compiled with
--enable-debug.


Previous Comments:
------------------------------------------------------------------------

[2003-11-30 19:16:05] fillmore at nrcan dot gc dot ca

Description:
------------
PHP 4.3.4 --with-nsapi (and 4.3.2) segfaults when many
simultaneous requests are made to a script that calls MySQL.  It fails
under both SunONE Web Server 6.0 and 6.1 with:
[30/Nov/2003:18:39:36] catastrophe ( 2877): Server crash detected
(signal SIGBUS)
[30/Nov/2003:18:39:36] info ( 2877): Crash occurred in NSAPI SAF
php4_execute
[30/Nov/2003:18:39:36] info ( 2877): Crash occurred in function
_db_return_ from module /sunone/bin/libphp4.so

It only happens if a load test is run with more than about
30 simultaneous users.  It does not appear to be a
multithreading problem- it still fails with all CPUs
except one shut off.

- Bob Fillmore




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-- 
Edit this bug report at http://bugs.php.net/?id=26478&edit=1


   

Thread (13 messages)

• fillmore at nrcan dot gc dot caMon, 01 Dec 2003 00:16:06 +0000
  • iliaa@php.netMon, 01 Dec 2003 00:23:50 +0000#26478 [Opn->Fbk]: Segfault under load with scripts that call MySQL
  • sniper@php.netThu, 04 Dec 2003 07:25:47 +0000#26478 [Fbk->NoF]: Segfault under load with scripts that call MySQL
  • fillmore at nrcan dot gc dot caThu, 04 Dec 2003 22:09:17 +0000#26478 [NoF->Opn]: Segfault under load with scripts that call MySQL
  • sniper@php.netFri, 05 Dec 2003 00:26:22 +0000#26478 [Opn->Fbk]: Segfault under load with scripts that call MySQL
  • fillmore at nrcan dot gc dot caSat, 06 Dec 2003 15:27:29 +0000#26478 [Fbk->Opn]: Segfault under load with scripts that call MySQL
  • fillmore at nrcan dot gc dot caSun, 07 Dec 2003 21:08:24 +0000#26478 [Opn]: Segfault under load with scripts that call MySQL
  • sniper@php.netTue, 09 Dec 2003 11:14:16 +0000#26478 [Opn->Fbk]: Segfault under load with scripts that call MySQL
  • sniper@php.netMon, 15 Dec 2003 02:17:33 +0000#26478 [Fbk->NoF]: Segfault under load with scripts that call MySQL
  • fillmore at nrcan dot gc dot caTue, 16 Dec 2003 19:47:21 +0000#26478 [NoF->Opn]: Segfault under load with scripts that call MySQL
  • sniper@php.netTue, 16 Dec 2003 19:57:28 +0000#26478 [Opn->Fbk]: Segfault under load with scripts that call MySQL
  • php-bugs at lists dot php dot netThu, 01 Jan 2004 06:00:00 +0000#26478 [Fbk->NoF]: Segfault under load with scripts that call MySQL
  • michaelw at webcentral dot com dot auThu, 17 Mar 2005 01:10:43 +0000#26478 [Com]: Segfault under load with scripts that call MySQL