Re: [mp2] threaded applications inside of mod_perl

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bob-modperl@xxxxxxxxxxx.xxx wrote:
> On Thu, 3 Feb 2005, Stas Bekman wrote:
> 
>> Almost there. What this report lacks is:
>>
>> 1) the explanation of how this script was invoked. Is it running under 
>> ModPerl::Registry or else? Please show us the relevant httpd.conf bits.
>>
>> 2) backtrace. Please read:
>> http://perl.apache.org/docs/2.0/user/help/help.html#Resolving_Segmentation_Faults 
>>
> 
> 
> 
> httpd.conf
> ===========# prefork MPM
> # StartServers ......... number of server processes to start
> # MinSpareServers ...... minimum number of server processes which are 
> kept spare
> # MaxSpareServers ...... maximum number of server processes which are 
> kept spare
> # MaxClients ........... maximum number of server processes allowed to 
> start
> # MaxRequestsPerChild .. maximum number of requests a server process serves
> <IfModule prefork.c>
> StartServers         5
> MinSpareServers      5
> MaxSpareServers     10
> MaxClients          100
> MaxRequestsPerChild 10000
> </IfModule>
> 
> # pthread MPM
> # StartServers ......... initial  number of server processes to start
> # MaxClients ........... maximum  number of server processes allowed to 
> start
> # MinSpareThreads ...... minimum  number of worker threads which are 
> kept spare
> # MaxSpareThreads ...... maximum  number of worker threads which are 
> kept spare
> # ThreadsPerChild ...... constant number of worker threads in each 
> server process
> # MaxRequestsPerChild .. maximum  number of requests a server process 
> serves
> <IfModule worker.c>
> StartServers         2
> MaxClients         150
> MinSpareThreads     25
> MaxSpareThreads     75
> ThreadsPerChild     25
> MaxRequestsPerChild  0
> </IfModule>
> 
> # perchild MPM
> # NumServers ........... constant number of server processes
> # StartThreads ......... initial  number of worker threads in each 
> server process
> # MinSpareThreads ...... minimum  number of worker threads which are 
> kept spare
> # MaxSpareThreads ...... maximum  number of worker threads which are 
> kept spare
> # MaxThreadsPerChild ... maximum  number of worker threads in each 
> server process
> # MaxRequestsPerChild .. maximum  number of connections per server 
> process (then it dies)
> <IfModule perchild.c>
> NumServers           5
> StartThreads         5
> MinSpareThreads      5
> MaxSpareThreads     10
> MaxThreadsPerChild  20
> MaxRequestsPerChild  0
> AcceptMutex fcntl
> </IfModule>
> 
> # Include module configuration:
> #Include /etc/apache2/mods-enabled/*.load
> #Include /etc/apache2/mods-enabled/*.conf
> LoadModule log_config_module /usr/lib/httpd/modules/mod_log_config.so
> LoadModule env_module /usr/lib/httpd/modules/mod_env.so
> LoadModule alias_module /usr/lib/httpd/modules/mod_alias.so
> LoadModule cgi_module /usr/lib/httpd/modules/mod_cgi.so
> LoadModule rewrite_module /usr/lib/httpd/modules/mod_rewrite.so
> LoadModule access_module /usr/lib/httpd/modules/mod_access.so
> LoadModule dir_module /usr/lib/httpd/modules/mod_dir.so
> LoadModule mime_module /usr/lib/httpd/modules/mod_mime.so
> LoadModule autoindex_module /usr/lib/httpd/modules/mod_autoindex.so
> LoadModule negotiation_module /usr/lib/httpd/modules/mod_negotiation.so
> LoadModule setenvif_module /usr/lib/httpd/modules/mod_setenvif.so
> LoadModule status_module /usr/lib/httpd/modules/mod_status.so
> LoadModule auth_module /usr/lib/httpd/modules/mod_auth.so
> LoadModule deflate_module /usr/lib/httpd/modules/mod_deflate.so

where is the modperl confguration? As far as you've shown there is no 
mod_perl involved in serving any requests. (Hint: show us 
Directory/Location/etc container responsible for a request that has 
triggered the segfault)


> I have recompiled httpd with debugging and removed all references to 
> strip, recompiled perl with DEBUGGING, recompiled mod_perl as well.
> 
> I know this is not useful but I'm still not getting a good backtrace.  
> Any suggestions would be useful.
> 
> Starting program: /usr/src/redhat/BUILD/httpd-2.0.51/worker/httpd -X
> 
> Program received signal SIGINT, Interrupt.
> 0x406826ad in ?? ()
> (gdb) bt
> #0  0x406826ad in ?? ()
> #1  0x801684d8 in ?? ()
> #2  0x80285e4c in ?? ()
> #3  0x01000001 in ?? ()
> #4  0x80046c20 in ?? ()
> #5  0x402b7314 in ?? ()
> #6  0x4020a84e in ?? ()
> #7  0x00000000 in ?? ()

Please reread my original reply. I still have no idea how you've invoked 
the script. i.e. show us the URL that you've called. and above I've asked 
you for the relevant config section.



        -- 
        __________________________________________________________________
Stas Bekman            JAm_pH ------> Just Another mod_perl Hacker
http://stason.org/     mod_perl Guide ---> http://perl.apache.org
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