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authorAlexander Duyck <alexander.h.duyck@intel.com>2010-05-21 14:41:35 -0700
committerPekka Enberg <penberg@cs.helsinki.fi>2010-05-24 21:11:29 +0300
commit73367bd8eef4f4eb311005886aaa916013073265 (patch)
treed603667689cfea1d8de49fe3c7fada7f6b6eae53 /net/mac80211/wme.c
parent7e125f7b9cbfce4101191b8076d606c517a73066 (diff)
downloadblackbird-op-linux-73367bd8eef4f4eb311005886aaa916013073265.tar.gz
blackbird-op-linux-73367bd8eef4f4eb311005886aaa916013073265.zip
slub: move kmem_cache_node into it's own cacheline
This patch is meant to improve the performance of SLUB by moving the local kmem_cache_node lock into it's own cacheline separate from kmem_cache. This is accomplished by simply removing the local_node when NUMA is enabled. On my system with 2 nodes I saw around a 5% performance increase w/ hackbench times dropping from 6.2 seconds to 5.9 seconds on average. I suspect the performance gain would increase as the number of nodes increases, but I do not have the data to currently back that up. Bugzilla-Reference: http://bugzilla.kernel.org/show_bug.cgi?id=15713 Cc: <stable@kernel.org> Reported-by: Alex Shi <alex.shi@intel.com> Tested-by: Alex Shi <alex.shi@intel.com> Acked-by: Yanmin Zhang <yanmin_zhang@linux.intel.com> Acked-by: Christoph Lameter <cl@linux-foundation.org> Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com> Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
Diffstat (limited to 'net/mac80211/wme.c')
0 files changed, 0 insertions, 0 deletions
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