general protection fault and howto capture core dump
chip-set at mail.ru
Fri Apr 25 06:59:27 UTC 2008
Adjust your sysctl variable fs.suid_dumpable to 1:
/sbin/sysctl fs.suid_dumpable = 1
and start memcached with -r flag
ps: we solved the same problem by using memcached-1.1.x
Miguel DeAvila wrote:
> We're having fairly regular outages in our memcache cluster ...
> the memcached process is exiting abnormally.
> The only log entry we can see is via dmesg,
> memcached general protection rip:407ed9 rsp:7fff7cdeb238 error:0
> Anyone seen this?
> We also have not had any luck getting a core dump. We're running
> CentOS release 5 (Final).
> I think we've taken the necessary steps to encourage a core dump,
> [root at memcache04 ~]# cat /proc/sys/kernel/core_pattern
> [root at memcache04 ~]# cat /proc/sys/kernel/core_uses_pid
> My one suspicion is that the current working dir for the memcached process
> is /root, but the process is running as the www user, so it does not have write
> Any tips?
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