On Fri, Apr 05, 2013 at 02:10:32PM +0200, Stefan Priebe - Profihost AG wrote: > Am 05.04.2013 14:00, schrieb Mel Gorman: > > On Wed, Apr 03, 2013 at 04:11:24PM +0200, Stefan Priebe - Profihost AG wrote: > >> Am 03.04.2013 16:03, schrieb Mel Gorman: > >>>> I've now tested 3.9-rc5 this gaves me a slightly different kernel log: > >>>> [ 197.236518] pigz[2908]: segfault at 0 ip (null) sp > >>>> 00007f347bffed00 error 14 > >>>> [ 197.237632] traps: pigz[2915] general protection ip:7f3482dbce2d > >>>> sp:7f3473ffec10 error:0 in libz.so.1.2.3.4[7f3482db7000+17000] > >>>> [ 197.330615] in pigz[400000+10000] > >>>> > >>>> With 3.8 it is the same as with 3.8.4 or 3.8.5. > >>>> > >>> > >>> Ok. Are there NUMA machines were you do *not* see this problem? > >> Sadly no. > >> > >> I can really fast reproduce it with this one: > >> 1.) Machine with only 16GB Mem > >> 2.) compressing two 60GB Files in parallel with pigz consuming all cores > >> > > > > Ok, I'm dealing with this slower than I'd like due to an unfortunate > > abundance of bugs right now. I am putting together a reproduction case but > > I still can't trigger it unfortunately. Can you post your .config in case > > it's my kernel config that is the reason I can't see the problem please? > > no problem. Attaches is my kernel config. > It does indeed appear that the kernel configuration is a factor. Can you try applying the following to your .config please? --- config-bad 2013-04-07 21:08:02.213112445 +0100 +++ .config 2013-04-07 23:28:09.275973625 +0100 @@ -2518,8 +2518,8 @@ CONFIG_TMPFS=y CONFIG_TMPFS_POSIX_ACL=y CONFIG_TMPFS_XATTR=y -# CONFIG_HUGETLBFS is not set -# CONFIG_HUGETLB_PAGE is not set +CONFIG_HUGETLBFS=y +CONFIG_HUGETLB_PAGE=y CONFIG_CONFIGFS_FS=y CONFIG_MISC_FILESYSTEMS=y # CONFIG_ADFS_FS is not set -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>