On Thu, 2018-03-22 at 08:43:50 UTC, "Aneesh Kumar K.V" wrote: > Right now we use only 4K out of the 64k page allocated for the level 4 page > table. W.r.t the performance impact due to lock contention, with ebizzy > > 256 threads: > without patch (10 runs of ./ebizzy -m -n 1000 -s 131072 -S 100) > median = 15678.5 > stdev = 42.1209 > > with patch: > median = 15354 > stdev = 194.743 > > This is with THP disabled. With THP enabled the impact of the patch will be > less. > > Signed-off-by: Aneesh Kumar K.V <aneesh.ku...@linux.vnet.ibm.com>
Applied to powerpc next, thanks. https://git.kernel.org/powerpc/c/fb4e5dbd44564077fa0267a59b4596 cheers