Messages in this thread | | | Subject | Re: [PATCH v2 14/14] Change CPUACCT to default n | From | Peter Zijlstra <> | Date | Thu, 24 Nov 2011 14:24:33 +0100 |
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On Mon, 2011-11-21 at 10:59 +0900, KAMEZAWA Hiroyuki wrote: > Could you share your analysis why cpuacct cgroup is slow ?
It adds accounting to all scheduler hot paths, accounting that is mostly duplicate of accounting already done. It also does another cgroup hierarchy walk, separate from existing controllers, hitting all cold cachelines again.
IOW, it sucks chunks and I should never have allowed it to be merged.
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