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? -- Mel Gorman SUSE Labs -- 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>