hello guys,
i am using php 5.3.6 with opcode caching APC

i have checked php-fpm.log and it shows that child processes are
dieing due to Signal 11 (segmentation fault)

what should i have to do to avoid segfault ...

any help will be appreciated...

thank you

Did you try eaccelerator?

I have also seen seg faults from php-fpm once or twice over the past
few months of running it. Doesn't seem to have impacted application
performance much; I assume that the process manager just spawns a new
process to replace the one that died. Are you seeing A LOT of seg
faults?

Presumably it's due to a memory management bug in php-fpm (or php
potentially) and will go away as the product matures...

Clark

On Tue, Jun 7, 2011 at 8:21 AM, myuniverso.com <khizarsonu@gmail.com> wrote:
> hello guys,
> i am using php 5.3.6 with opcode caching APC
>
> i have checked php-fpm.log and it shows that child processes are
> dieing due to Signal 11 (segmentation fault)
>
> what should i have to do to avoid segfault ...
>
> any help will be appreciated...
>
> thank you

i am seeing a lot of seg fault ..

i have turned off opcode caching but i am using apc for user data
caching only (i have tried memcache for user data caching but miss
rate was too high so i am not using it)

is there any solution to avoid seg fault......

On Jun 7, 7:54 pm, Clark Freifeld <clark.freif...@gmail.com> wrote:
> I have also seen seg faults from php-fpm once or twice over the past
> few months of running it. Doesn't seem to have impacted application
> performance much; I assume that the process manager just spawns a new
> process to replace the one that died. Are you seeing A LOT of seg
> faults?
>
> Presumably it's due to a memory management bug in php-fpm (or php
> potentially) and will go away as the product matures...
>
> Clark
>
> On Tue, Jun 7, 2011 at 8:21 AM, myuniverso.com <khizars...@gmail.com> wrote:
> > hello guys,
> > i am using php 5.3.6 with opcode caching APC
>
> > i have checked php-fpm.log and it shows that child processes are
> > dieing due to Signal 11 (segmentation fault)
>
> > what should i have to do to avoid segfault ...
>
> > any help will be appreciated...
>
> > thank you
>
>

i completely removed APC then also am getting seg fault

any one have an idea that what is the reason behind this segfault..


On Jun 9, 7:22 pm, "myuniverso.com" <khizars...@gmail.com> wrote:
> i am seeing a lot of seg fault ..
>
> i have turned off opcode caching but i am using apc for user data
> caching only (i have tried memcache for user data caching but miss
> rate was too high so i am not using it)
>
> is there any solution to avoid seg fault......
>
> On Jun 7, 7:54 pm, Clark Freifeld <clark.freif...@gmail.com> wrote:
>
> > I have also seen seg faults from php-fpm once or twice over the past
> > few months of running it. Doesn't seem to have impacted application
> > performance much; I assume that the process manager just spawns a new
> > process to replace the one that died. Are you seeing A LOT of seg
> > faults?
>
> > Presumably it's due to a memory management bug in php-fpm (or php
> > potentially) and will go away as the product matures...
>
> > Clark
>
> > On Tue, Jun 7, 2011 at 8:21 AM, myuniverso.com <khizars...@gmail.com> wrote:
> > > hello guys,
> > > i am using php 5.3.6 with opcode caching APC
>
> > > i have checked php-fpm.log and it shows that child processes are
> > > dieing due to Signal 11 (segmentation fault)
>
> > > what should i have to do to avoid segfault ...
>
> > > any help will be appreciated...
>
> > > thank you
>
>

On 06/09/2011 08:28 PM, myuniverso.com wrote:
> i completely removed APC then also am getting seg fault
>
> any one have an idea that what is the reason behind this segfault..

No, of course not. And nobody ever will.
But you can ask that question again when you have the backtrace:
http://bugs.php.net/bugs-generating-backtrace.php

--
Wbr,
Antony Dovgal
---
http://pinba.org - realtime profiling for PHP

On 06/09/2011 02:11 PM, Antony Dovgal wrote:
> On 06/09/2011 08:28 PM, myuniverso.com wrote:
>> i completely removed APC then also am getting seg fault
>>
>> any one have an idea that what is the reason behind this segfault..
>
> No, of course not. And nobody ever will.
> But you can ask that question again when you have the backtrace:
> http://bugs.php.net/bugs-generating-backtrace.php
>

Or send some basic configurations and the webserver and fpm logs...

Not directly a solution to your problems but I had segmentation faults all the time when using APC on Apache and I fixed it by rebuilding Apache using not the default "worker" MPM but the "prefork" one.
It took me a long time to identify this cause so I posted here the details: http://www.blah-blah.ch/it/webserver/php-acceleration-for-apache/
Bye