Mod_perl and win32 --more experience
Hi all, There has been quite a few reports about mod_perl causing segment faults in Win32 boxes on the list (including me). Thanks to all that responded with suggestions. Here is my latest findings: 1- I have mod_perl2.0.3 apache2.2.4 working on a Windows 2003 box.(Dual xceleron IBM server) 2- Using standart binaries for perl (activePerl and Apache) is perfectly fine. No need to compile them yourself. 3- XML::Libxml or anything that uses it like XML::Simple will definitely crash the system under heavy load. I now use Expat and under most heavy tests it survives. This is a very usefull package and may be somebody will look into it. 4- Another culprit was a not a very common package HTML::Template::Pro. Segment faults (saying free to wrong pool) again under heavy use. I now use HTML::Template and works fine. So I can now say Mod_Perl rocks on a production Library system running on Windows Box. Hope it helps to others Tumer Garip
Re:Re: Modperl crashes on win32
Hi, No need for any specific code. A simple CGI script writing some silly sentences to the browser will do the same. However I noticed something else. 1-When i test with a concurrency level above 1 right after a fresh server start it crashes almost 100%. 2-If I gradually increase the concurrency as 1,3,5,10 and keep testing than it works and it will segmenfault intermittently. 3-I tested with 2.0.4-dev as well. It didnot compile until i upgraded threads::shared to CPAN version. Things have improved and number of crashes is reduced. Thats all i can say at the moment. Thanks Tumer Perin Harkins wrote: On 1/25/07, Tümer Garip [EMAIL PROTECTED] wrote: We have a production working library system with the above platform. Recently we are trying to use Modperl with either PerlRun or Registry Everything looks smooth except the intermittent faults i quoted above. Can you attempt to isolate the part of your perl code that's running when it hits this segfault? - Perrin
Modperl crashes on win32
Hi all,
New to the list so bear with me a sec.
Platform: Windows 2003 Server/Apache 2.2.3,ActivePerl5.8.8-819
Problem: ModPerl 2.0.3 crashes Apache 2.2.3 or 2.2.4 when concurrency
occurs.
Error reported on windows event system:
Faulting application httpd.exe, version 2.2.3.0, faulting module
perl58.dll, version 0.0.0.0, fault address 0x000ead7a.
Or:
Faulting application httpd.exe, version 2.2.3.0, faulting module
perl58.dll, version 0.0.0.0, fault address 0x0003695f.
History:
We have a production working library system with the above platform.
Recently we are trying to use Modperl with either PerlRun or Registry
Everything looks smooth except the intermittent faults i quoted above.
Test Run:
Using ApacheBench tried to isolate the problem.
When concurrency is set to 1 we did not manage to crash the system. Any
concurrency level above 1 system crash occurs 90% of the time. ie yes it
sometimes work!
Remedies tried:
From Isaac Goldstands mail (22 Nov 2006) to the list:
Quote:
In order to avoid the problem I used the __try and __catch which are
used in Microsoft win32 applications changing :
inline void FreeShared(void* ptr)
{
GetLockShared();
__try{
m_pVMemShared- Free(ptr);
}
__except(EXCEPTION_EXECUTE_HANDLER)
{
}
FreeLockShared();
};
Located in win32\perlhost.h file.
--Unquote.
We applied this patch to perl, recompiled and nothing changed.
We do not have C programmers in hand so we are stuck.
Any help, suggestions is appreciated.
Tumer Garip
NEU Grand Library
Cyprus
