Messages in this thread | | | Date | Tue, 14 May 2013 13:32:33 -0400 | From | Rik van Riel <> | Subject | Re: [RFC 4/4] mm: free reclaimed pages instantly without depending next reclaim |
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On 05/12/2013 10:10 PM, Minchan Kim wrote: > Normally, file I/O for reclaiming is asynchronous so that > when page writeback is completed, reclaimed page will be > rotated into LRU tail for fast reclaiming in next turn. > But it makes unnecessary CPU overhead and more iteration with higher > priority of reclaim could reclaim too many pages than needed > pages. > > This patch frees reclaimed pages by paging out instantly without > rotating back them into LRU's tail when the I/O is completed so > that we can get out of reclaim loop as soon as poosbile and avoid > unnecessary CPU overhead for moving them. > > Signed-off-by: Minchan Kim <minchan@kernel.org>
I like this approach and am looking forward to your v2 series, with the reworked patch 3/4.
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