[Top][All Lists]
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [Qemu-devel] [PATCH 7/9] Revert "mm: have order > 0 compaction start
|
From: |
Rafael Aquini |
|
Subject: |
Re: [Qemu-devel] [PATCH 7/9] Revert "mm: have order > 0 compaction start off where it left" |
|
Date: |
Fri, 21 Sep 2012 14:52:43 -0300 |
|
User-agent: |
Mutt/1.5.21 (2010-09-15) |
On Fri, Sep 21, 2012 at 11:46:21AM +0100, Mel Gorman wrote:
> This reverts commit 7db8889a (mm: have order > 0 compaction start off
> where it left) and commit de74f1cc (mm: have order > 0 compaction start
> near a pageblock with free pages). These patches were a good idea and
> tests confirmed that they massively reduced the amount of scanning but
> the implementation is complex and tricky to understand. A later patch
> will cache what pageblocks should be skipped and reimplements the
> concept of compact_cached_free_pfn on top for both migration and
> free scanners.
>
> Signed-off-by: Mel Gorman <address@hidden>
> Acked-by: Rik van Riel <address@hidden>
> ---
Acked-by: Rafael Aquini <address@hidden>
- [Qemu-devel] [PATCH 0/9] Reduce compaction scanning and lock contention, Mel Gorman, 2012/09/21
- [Qemu-devel] [PATCH 2/9] Revert "mm-compaction-abort-compaction-loop-if-lock-is-contended-or-run-too-long-fix", Mel Gorman, 2012/09/21
- [Qemu-devel] [PATCH 3/9] Revert "mm: compaction: abort compaction loop if lock is contended or run too long", Mel Gorman, 2012/09/21
- [Qemu-devel] [PATCH 1/9] Revert "mm: compaction: check lock contention first before taking lock", Mel Gorman, 2012/09/21
- [Qemu-devel] [PATCH 7/9] Revert "mm: have order > 0 compaction start off where it left", Mel Gorman, 2012/09/21
- [Qemu-devel] [PATCH 6/9] mm: compaction: Acquire the zone->lock as late as possible, Mel Gorman, 2012/09/21
- Re: [Qemu-devel] [PATCH 6/9] mm: compaction: Acquire the zone->lock as late as possible, Minchan Kim, 2012/09/25
- [Qemu-devel] [PATCH 8/9] mm: compaction: Cache if a pageblock was scanned and no pages were isolated, Mel Gorman, 2012/09/21