Re: [RFC][PATCH] page reclaim throttle take2

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From: Balbir Singh
Date: Tuesday, February 26, 2008 - 10:48 pm

David Rientjes wrote:


Things are changing, with memory hot-add remove, CPU hotplug , the topology can
change and is no longer static. One can create fake NUMA nodes on the fly using
a boot option as well.

Since we're talking of parallel reclaims, I think it's a function of CPUs and
Nodes. I'd rather keep it as a sysctl with a good default value based on the
topology. If we end up getting it wrong, the system administrator has a choice.
That is better than expecting him/her to recompile the kernel and boot that. A
sysctl does not create problems either w.r.t changing the number of threads, no
hard to solve race-conditions - it is fairly straight forward




-- 
	Warm Regards,
	Balbir Singh
	Linux Technology Center
	IBM, ISTL
--
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Messages in current thread:
[RFC][PATCH] page reclaim throttle take2 , KOSAKI Motohiro, (Mon Feb 25, 7:32 pm)
Re: [RFC][PATCH] page reclaim throttle take2, Peter Zijlstra, (Tue Feb 26, 2:18 pm)
Re: [RFC][PATCH] page reclaim throttle take2, KAMEZAWA Hiroyuki, (Tue Feb 26, 5:50 pm)
Re: [RFC][PATCH] page reclaim throttle take2, KOSAKI Motohiro, (Tue Feb 26, 9:26 pm)
Re: [RFC][PATCH] page reclaim throttle take2, Balbir Singh, (Tue Feb 26, 9:27 pm)
Re: [RFC][PATCH] page reclaim throttle take2, KOSAKI Motohiro, (Tue Feb 26, 9:45 pm)
Re: [RFC][PATCH] page reclaim throttle take2, KAMEZAWA Hiroyuki, (Tue Feb 26, 10:00 pm)
Re: [RFC][PATCH] page reclaim throttle take2, Balbir Singh, (Tue Feb 26, 10:03 pm)
Re: [RFC][PATCH] page reclaim throttle take2, KOSAKI Motohiro, (Tue Feb 26, 10:04 pm)
Re: [RFC][PATCH] page reclaim throttle take2, KOSAKI Motohiro, (Tue Feb 26, 10:13 pm)
Re: [RFC][PATCH] page reclaim throttle take2, David Rientjes, (Tue Feb 26, 10:19 pm)
Re: [RFC][PATCH] page reclaim throttle take2, KOSAKI Motohiro, (Tue Feb 26, 10:33 pm)
Re: [RFC][PATCH] page reclaim throttle take2, David Rientjes, (Tue Feb 26, 10:47 pm)
Re: [RFC][PATCH] page reclaim throttle take2, Balbir Singh, (Tue Feb 26, 10:48 pm)
Re: [RFC][PATCH] page reclaim throttle take2, David Rientjes, (Tue Feb 26, 11:09 pm)
Re: [RFC][PATCH] page reclaim throttle take2, KOSAKI Motohiro, (Tue Feb 26, 11:52 pm)
Re: [RFC][PATCH] page reclaim throttle take2, KOSAKI Motohiro, (Wed Feb 27, 12:10 am)
Re: [RFC][PATCH] page reclaim throttle take2, David Rientjes, (Wed Feb 27, 12:19 am)
Re: [RFC][PATCH] page reclaim throttle take2, KAMEZAWA Hiroyuki, (Wed Feb 27, 12:51 am)
Re: [RFC][PATCH] page reclaim throttle take2, David Rientjes, (Wed Feb 27, 12:56 am)
Re: [RFC][PATCH] page reclaim throttle take2, Balbir Singh, (Wed Feb 27, 12:59 am)
Re: [RFC][PATCH] page reclaim throttle take2, KAMEZAWA Hiroyuki, (Wed Feb 27, 1:09 am)
Re: [RFC][PATCH] page reclaim throttle take2, David Rientjes, (Wed Feb 27, 1:47 am)
Re: [RFC][PATCH] page reclaim throttle take2, Balbir Singh, (Wed Feb 27, 2:01 am)
Re: [RFC][PATCH] page reclaim throttle take2, Peter Zijlstra, (Wed Feb 27, 2:44 am)
Re: [RFC][PATCH] page reclaim throttle take2, Rik van Riel, (Wed Feb 27, 8:30 am)