Re: [PHP] Apache and PHP segfaults on Redhat EL5
On Thu, Jan 6, 2011 at 22:55, Jimmy Stewpot mail...@oranged.to wrote: Is there a method or way that I can enable a 'debug' mode in php which would help me track down and identify the root cause of these problems? If anyone has any suggestions on what I can do to try and get further down the track to enlightenment I would be really appreciated. Natively, no, but the de facto standard is Derick's Xdebug package (http://xdebug.org/). If you can, compile PHP from source and do away with the EL5 package. That'll most likely rid you of the segfaults, but will leave their cause as an unsolved mystery. If you're okay with giving up and not knowing, you'll probably save yourself a lot of time and headaches. -- /Daniel P. Brown Network Infrastructure Manager Documentation, Webmaster Teams http://www.php.net/ -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Apache and PHP segfaults on Redhat EL5
On Fri, 7 Jan 2011 16:24:13 -0500 Daniel Brown danbr...@php.net wrote: On Thu, Jan 6, 2011 at 22:55, Jimmy Stewpot mail...@oranged.to wrote: Is there a method or way that I can enable a 'debug' mode in php which would help me track down and identify the root cause of these problems? If anyone has any suggestions on what I can do to try and get further down the track to enlightenment I would be really appreciated. Natively, no, but the de facto standard is Derick's Xdebug package (http://xdebug.org/). If you can, compile PHP from source and do away with the EL5 package. That'll most likely rid you of the segfaults, but will leave their cause as an unsolved mystery. If you're okay with giving up and not knowing, you'll probably save yourself a lot of time and headaches. Also, you might try asking on a RH list or forum, this might be a known issue with a workaround. If all else fails, file a bug. -- Greg Bair PHP Developer -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
[PHP] Apache and PHP segfaults on Redhat EL5
Hello, I have been working over the last few months to try and get to the bottom of why our apache processes are regularly being killed with a Sig 11 (Segmentation Fault). Here are the messages in the kern.log httpd[22309]: segfault at 7fffd01b4ffc rip 2b1f935c064c rsp 7fffd01b4f90 error 6 httpd[21819]: segfault at 7fffd01b4ffc rip 2b1f935c064c rsp 7fffd01b4f90 error 6 httpd[19168]: segfault at 7fffd01b4ffc rip 2b1f935c064c rsp 7fffd01b4f90 error 6 httpd[21597]: segfault at 7fffd01b4ffc rip 2b1f935c064c rsp 7fffd01b4f90 error 6 httpd[22871]: segfault at 7fffd01b4ffc rip 2b1f935c064c rsp 7fffd01b4f90 error 6 httpd[22090]: segfault at 7fffd01b4ffc rip 2b1f935c064c rsp 7fffd01b4f90 error 6 httpd[21970]: segfault at 7fffd01b4ffc rip 2b1f935c064c rsp 7fffd01b4f90 error 6 httpd[22315]: segfault at 7fffd01b4ffc rip 2b1f935c064c rsp 7fffd01b4f90 error 6 httpd[21808]: segfault at 7fffd01b4ffc rip 2b1f935c064c rsp 7fffd01b4f90 error 6 httpd[21801]: segfault at 7fffd01b4ffc rip 2b1f935c064c rsp 7fffd01b4f90 error 6 httpd[20469]: segfault at 7fffd01b4ffc rip 2b1f935c064c rsp 7fffd01b4f90 error 6 httpd[23509]: segfault at 7fffd01b4ffc rip 2b1f935c064c rsp 7fffd01b4f90 error 6 httpd[21967]: segfault at 7fffd01b4ffc rip 2b1f935c064c rsp 7fffd01b4f90 error 6 httpd[21814]: segfault at 7fffd01b4ffc rip 2b1f935c064c rsp 7fffd01b4f90 error 6 httpd[24017]: segfault at 7fffd01b4ffc rip 2b1f935c064c rsp 7fffd01b4f90 error 6 httpd[21605]: segfault at 7fffd01b4ffc rip 2b1f935c064c rsp 7fffd01b4f90 error 6 httpd[24329]: segfault at 7fffd01b4ffc rip 2b1f935c064c rsp 7fffd01b4f90 error 6 httpd[23573]: segfault at 7fffd01b4ffc rip 2b1f935c064c rsp 7fffd01b4f90 error 6 httpd[24328]: segfault at 7fffd01b4ffc rip 2b1f935c064c rsp 7fffd01b4f90 error 6 httpd[22301]: segfault at 7fffd01b4ffc rip 2b1f935c064c rsp 7fffd01b4f90 error 6 httpd[24636]: segfault at 7fffd01b4ffc rip 2b1f935c064c rsp 7fffd01b4f90 error 6 httpd[25028]: segfault at 7fffd01b4ffc rip 2b1f935c064c rsp 7fffd01b4f90 error 6 httpd[22869]: segfault at 7fffd01b4ffc rip 2b1f935c064c rsp 7fffd01b4f90 error 6 httpd[25030]: segfault at 7fffd01b4ffc rip 2b1f935c064c rsp 7fffd01b4f90 error 6 We literally have thousands of those, I have tracked it down as far as being caused by mod_php in apache (Redhat 5 update 5). However when I enabled coredump's in apache I don't get anything. I can however get a dump if I send a manual sig 11 to the process. Which brings me to my questions. Is there a method or way that I can enable a 'debug' mode in php which would help me track down and identify the root cause of these problems? If anyone has any suggestions on what I can do to try and get further down the track to enlightenment I would be really appreciated. Regards, Jimmy. -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
