On Wed, Oct 09, 2013 at 01:03:54PM +0200, Ingo Molnar wrote: > > * Mel Gorman <mgorman@xxxxxxx> wrote: > > > This series has roughly the same goals as previous versions despite the > > size. It reduces overhead of automatic balancing through scan rate reduction > > and the avoidance of TLB flushes. It selects a preferred node and moves tasks > > towards their memory as well as moving memory toward their task. It handles > > shared pages and groups related tasks together. Some problems such as shared > > page interleaving and properly dealing with processes that are larger than > > a node are being deferred. This version should be ready for wider testing > > in -tip. > > Thanks Mel - the series looks really nice. I've applied the patches to > tip:sched/core and will push them out later today if they pass testing > here. > Thanks very much! > > Note that with kernel 3.12-rc3 that numa balancing will fail to boot if > > CONFIG_JUMP_LABEL is configured. This is a separate bug that is > > currently being dealt with. > > Okay, this is about: > > https://lkml.org/lkml/2013/9/30/308 > > Note that Peter and me saw no crashes so far, and we boot with > CONFIG_JUMP_LABEL=y and CONFIG_NUMA_BALANCING=y. It seems like an > unrelated bug in any case, perhaps related to specific details in your > kernel image? > Possibly or it has been fixed since and I missed it. I'll test latest tip and see what falls out. > 2) > > I also noticed a small Kconfig annoyance: > > config NUMA_BALANCING_DEFAULT_ENABLED > bool "Automatically enable NUMA aware memory/task placement" > default y > depends on NUMA_BALANCING > help > If set, autonumic NUMA balancing will be enabled if running on a NUMA > machine. > > config NUMA_BALANCING > bool "Memory placement aware NUMA scheduler" > depends on ARCH_SUPPORTS_NUMA_BALANCING > depends on !ARCH_WANT_NUMA_VARIABLE_LOCALITY > depends on SMP && NUMA && MIGRATION > help > This option adds support for automatic NUM > > the NUMA_BALANCING_DEFAULT_ENABLED option should come after the > NUMA_BALANCING entries - things like 'make oldconfig' produce weird output > otherwise. > Ok, I did not realise that would be a problem. Thanks for fixing it up as well as the build errors on UP. -- 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>