On Mon, Dec 10, 2012 at 10:37:10AM +0530, Srikar Dronamraju wrote: > > > > Either way, last night I applied a patch on top of latest tip/master to > > remove the nr_cpus_allowed check so that numacore would be enabled again > > and tested that. In some places it has indeed much improved. In others > > it is still regressing badly and in two case, it's corrupting memory -- > > specjbb when THP is enabled crashes when running for single or multiple > > JVMs. It is likely that a zero page is being inserted due to a race with > > migration and causes the JVM to throw a null pointer exception. Here is > > the comparison on the rough off-chance you actually read it this time. > > I see this failure when running with THP and KSM enabled on > Friday's Tip master. Not sure if Mel was talking about the same issue. > > ------------[ cut here ]------------ > kernel BUG at ../kernel/sched/fair.c:2371! I'm not, this is new to me. I grepped the console logs I have and the closest I see is a WARN_ON triggered in numacore v17 which is no longer relevant. -- 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>