Messages in this thread | | | Date | Thu, 20 Dec 2012 21:50:21 +0800 | Subject | Re: [GIT PULL] Automatic NUMA Balancing V11 | From | Alex Shi <> |
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On Mon, Dec 17, 2012 at 7:19 AM, Linus Torvalds <torvalds@linux-foundation.org> wrote: > On Wed, Dec 12, 2012 at 2:03 AM, Mel Gorman <mgorman@suse.de> wrote: >> This is a pull request for "Automatic NUMA Balancing V11". The list > > Ok, guys, I've pulled this and pushed out. There were some conflicts > with both the VM changes and with the scheduler tree, but they were > pretty small and looked simple, so I fixed them up and hope they all > work. > > Has anybody tested the impact on single-node systems? If distros
I tested your tree till this patch set under our lkp testing system, with benchmark kbuild, aim9-mutitask, specjbb2005 -openjdk/jrockit, hackbench-process/thread, sysbench -fileio-cfq, multiple loop back netperf, on 2 laptops, SNB i7, and WSM i5. only aim9-mutitask-nl (2000 loads, increment 100) has about 2% performance drop on both of machine. all others has no clear performance change.
> enable this by default (and it does have 'default y', which is a big > no-no for new features - I undid that part) then there will be tons of > people running this without actually having multiple sockets. Does it > gracefully avoid pointless overheads for this case? >
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