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authorNick Piggin <nickpiggin@yahoo.com.au>2005-06-25 14:57:15 -0700
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-06-25 16:24:41 -0700
commita3f21bce1fefdf92a4d1705e888d390b10f3ac6f (patch)
tree1b77f5f5a8516737e3f1f62290c08fe093cff661 /include/asm-x86_64
parent7897986bad8f6cd50d6149345aca7f6480f49464 (diff)
[PATCH] sched: tweak affine wakeups
Do less affine wakeups. We're trying to reduce dbt2-pgsql idle time regressions here... make sure we don't don't move tasks the wrong way in an imbalance condition. Also, remove the cache coldness requirement from the calculation - this seems to induce sharp cutoff points where behaviour will suddenly change on some workloads if the load creeps slightly over or under some point. It is good for periodic balancing because in that case have otherwise have no other context to determine what task to move. But also make a minor tweak to "wake balancing" - the imbalance tolerance is now set at half the domain's imbalance, so we get the opportunity to do wake balancing before the more random periodic rebalancing gets preformed. Signed-off-by: Nick Piggin <nickpiggin@yahoo.com.au> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include/asm-x86_64')
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