Messages in this thread | | | Date | Mon, 7 Jan 2008 19:06:10 +0900 | From | KAMEZAWA Hiroyuki <> | Subject | Re: [patch 00/19] VM pageout scalability improvements |
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On Thu, 3 Jan 2008 12:00:00 -0500 Rik van Riel <riel@redhat.com> wrote:
> On Thu, 03 Jan 2008 11:52:08 -0500 > Lee Schermerhorn <Lee.Schermerhorn@hp.com> wrote: > > > Also, I should point out that the full noreclaim series includes a > > couple of other patches NOT posted here by Rik: > > > > 1) treat swap backed pages as nonreclaimable when no swap space is > > available. This addresses a problem we've seen in real life, with > > vmscan spending a lot of time trying to reclaim anon/shmem/tmpfs/... > > pages only to find that there is no swap space--add_to_swap() fails. > > Maybe not a problem with Rik's new anon page handling. > > If there is no swap space, my VM code will not bother scanning > any anon pages. This has the same effect as moving the pages > to the no-reclaim list, with the extra benefit of being able to > resume scanning the anon lists once swap space is freed. > Is this 'avoiding scanning anon if no swap' feature in this set ?
Thanks -Kame
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