[Bug 524281] Re: Tens of wakes per second in "[kernel scheduler] Load balancing tick" on Core 2 Duo even with only 1 core enabled

Rocko rockorequin at hotmail.com
Mon Aug 16 09:53:16 UTC 2010


FWIW, the mainline 2.6.35.2 kernel has reverted the nohz_ratelimit patch
now
(http://git.kernel.org/?p=linux/kernel/git/stable/linux-2.6.35.y.git;a=commit;h=1dc89aec877583e3e42421be77b063724a4bbb07)
so Maverick should get this improvement (ie have a reduced number of
load balancing ticks).

I tried 2.6.35.2 with the other load balancing patches (that convert to
a 'push' model IIRC) and on my laptop the number of load balancing ticks
drop from around 50 to perhaps 35 per second. Power usage drops
approximately one watt.

-- 
Tens of wakes per second in "[kernel scheduler] Load balancing tick" on Core 2 Duo even with only 1 core enabled
https://bugs.launchpad.net/bugs/524281
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