Last modified: 2014-03-14 14:16:28 UTC
In php.ini upload_max_filesize = 64M, the image is ~1.3M, $wgMaxShellMemory and $wgMaxShellFileSize are at their default value of 102400. Then the call to ImageMagick is done through wfShellExec, which runs bin/ulimit4.sh. This is probably an ImageMagick or, possibly, libgc1c2, according to the following bug reports https://bugzilla.redhat.com/show_bug.cgi?id=446929 http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=380727 As the convert executable hangs on a futex/wait, the cpu time required to trigger the given ulimit is never reached. Larger values for $wgMaxShellMemory and $wgMaxShellFileSize will work. Version: ImageMagick 6.2.4 02/10/07 Q16 http://www.imagemagick.org ii libgc1c2 6.8-1 conservative garbage collector for C and C++ The following is the final part of stracing convert with debug times({tms_utime=5, tms_stime=4, tms_cutime=0, tms_cstime=0}) = 1865220765 times({tms_utime=5, tms_stime=4, tms_cutime=0, tms_cstime=0}) = 1865220765 write(1, "17:06:18 0:02 0.090u 6.2.4 Trace"..., 9317:06:18 0:02 0.090u 6.2.4 Trace convert[26928]: hashmap.c/AppendValueToLinkedList/164/Trace ) = 93 write(1, " ...\n", 6 ... ) = 6 times({tms_utime=5, tms_stime=4, tms_cutime=0, tms_cstime=0}) = 1865220765 times({tms_utime=5, tms_stime=4, tms_cutime=0, tms_cstime=0}) = 1865220765 brk(0x75a000) = 0x738000 mmap(NULL, 1048576, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = -1 ENOMEM (Cannot allocate memory) times({tms_utime=5, tms_stime=4, tms_cutime=0, tms_cstime=0}) = 1865220765 times({tms_utime=5, tms_stime=4, tms_cutime=0, tms_cstime=0}) = 1865220765 brk(0x75a000) = 0x738000 mmap(NULL, 1048576, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = -1 ENOMEM (Cannot allocate memory) times({tms_utime=5, tms_stime=4, tms_cutime=0, tms_cstime=0}) = 1865220765 times({tms_utime=5, tms_stime=4, tms_cutime=0, tms_cstime=0}) = 1865220765 brk(0x75b000) = 0x738000 mmap(NULL, 1048576, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = -1 ENOMEM (Cannot allocate memory) times({tms_utime=5, tms_stime=4, tms_cutime=0, tms_cstime=0}) = 1865220765 times({tms_utime=5, tms_stime=4, tms_cutime=0, tms_cstime=0}) = 1865220765 brk(0x759000) = 0x738000 mmap(NULL, 1048576, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = -1 ENOMEM (Cannot allocate memory) mmap(NULL, 2097152, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_NORESERVE, -1, 0) = -1 ENOMEM (Cannot allocate memory) mmap(NULL, 1048576, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_NORESERVE, -1, 0) = -1 ENOMEM (Cannot allocate memory) mmap(NULL, 2097152, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_NORESERVE, -1, 0) = -1 ENOMEM (Cannot allocate memory) mmap(NULL, 1048576, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_NORESERVE, -1, 0) = -1 ENOMEM (Cannot allocate memory) futex(0x503150, FUTEX_WAIT, 2, NULL <unfinished ...>
Alessandro: Do you know if this still happens in a recent, supported version of MediaWiki?
