Messages in this thread | | | Date | Mon, 18 Jun 2012 17:09:36 +0400 | From | Glauber Costa <> | Subject | Re: [PATCH] mm/memcg: add unlikely to mercg->move_charge_at_immigrate |
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On 06/18/2012 05:10 PM, Wanpeng Li wrote: > From: Wanpeng Li <liwp@linux.vnet.ibm.com> > > move_charge_at_immigrate feature is disabled by default. Charges > are moved only when you move mm->owner and it also add additional > overhead.
How big is this overhead?
That's hardly a fast path. And if it happens to matter, it will be just bigger when you enable it, and the compiler start giving the wrong hints to the code.
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