Hi Pieter, have you checked the ulimit for the user the Apache runs under? See man core(5) for possible reasons why no core is dumped.
HTH > -----Ursprüngliche Nachricht----- > Von: mapserver-users [mailto:mapserver-users-boun...@lists.osgeo.org] Im > Auftrag von Pieter Callewaert > Gesendet: Montag, 6. März 2017 11:01 > An: mapserver-users@lists.osgeo.org > Betreff: Re: [mapserver-users] Mapcache segmentation faults under high > load > > Hi Thomas, > > > > The documentation for debug compiling is not complete > (http://mapserver.org/mapcache/install.html > <http://mapserver.org/mapcache/install.html> ). > > If I add -DCMAKE_BUILD_TYPE="Debug" to the cmake, it this enough? > > Also added CoreDumpDirectory /tmp/apache2-gdb-dump to apache2.conf, and > now I see this in the error log: > > > > [Thu Mar 02 08:46:42.588518 2017] [core:notice] [pid 13:tid > 140052444931968] AH00051: child pid 14 exit signal Segmentation fault > (11), possible coredump in /tmp/apache2-gdb-dump > > [Thu Mar 02 08:46:55.606507 2017] [core:notice] [pid 13:tid > 140052444931968] AH00051: child pid 2097 exit signal Segmentation fault > (11), possible coredump in /tmp/apache2-gdb-dump > > > > Unfortunately, no dumps yet, so I’m afraid I did something wrong with the > debug compiling. > > > > Kind regards, > > Pieter C > > > > From: thomas bonfort [mailto:thomas.bonf...@gmail.com] > Sent: Wednesday, 1 March, 2017 09:33 > To: Pieter Callewaert <pieter.callewa...@be-mobile.com>; mapserver- > us...@lists.osgeo.org > Subject: Re: [mapserver-users] Mapcache segmentation faults under high > load > > > > Try to get a backtrace from the crashes by compiling mapcache in debug > mode, and configuring apache to allow coredumps. The "stale lock" messages > you are seeing are side effects of the crashes so that's not where I'd > investigate at first. > > > > regards, > > thomas > > > > _______________________________________________ mapserver-users mailing list mapserver-users@lists.osgeo.org https://lists.osgeo.org/mailman/listinfo/mapserver-users