From: Rik van Riel <riel@redhat.com>
To: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: LKML <linux-kernel@vger.kernel.org>,
linux-mm <linux-mm@kvack.org>,
Linus Torvalds <torvalds@linux-foundation.org>,
Andrew Morton <akpm@linux-foundation.org>,
Gene Heskett <gene.heskett@gmail.com>
Subject: Re: [PATCH] mm: evict streaming IO cache first
Date: Sat, 15 Nov 2008 19:58:50 -0500 [thread overview]
Message-ID: <491F704A.3010201@redhat.com> (raw)
In-Reply-To: <20081115181748.3410.KOSAKI.MOTOHIRO@jp.fujitsu.com>
KOSAKI Motohiro wrote:
> Hi Andrew,
>
> I think we need this patch at 2.6.28.
I agree. I thought we would need this patch from right before
the time I wrote it, but we had no good workload to demonstrate
it at the time.
Gene Heskett found that the problem happens on his system and
the patch fixes is.
> Can this thinking get acception?
One of the reasons that I could not find a justification for
the patch is that all the benchmarks that I tried were
unaffected by it. This makes me believe that the risk of
performance regressions is low, while the patch does fix a
real performance bug for Gene's desktop.
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next prev parent reply other threads:[~2008-11-16 0:58 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-11-15 9:38 KOSAKI Motohiro
2008-11-16 0:58 ` Rik van Riel [this message]
2008-11-16 5:00 ` Andrew Morton
2008-11-16 18:15 ` Linus Torvalds
2008-11-16 21:20 ` Rik van Riel
2008-11-16 21:28 ` Hugh Dickins
2008-11-17 4:47 ` Andrew Morton
2008-11-17 6:19 ` Nick Piggin
2008-11-17 6:30 ` KAMEZAWA Hiroyuki
2008-11-17 6:39 ` KOSAKI Motohiro
2008-11-17 6:54 ` KAMEZAWA Hiroyuki
2008-11-17 7:03 ` KOSAKI Motohiro
2008-11-17 8:22 ` KAMEZAWA Hiroyuki
2008-11-17 8:32 ` KOSAKI Motohiro
2008-11-17 16:22 ` Rik van Riel
2008-11-17 16:22 ` Linus Torvalds
2008-11-17 16:27 ` Rik van Riel
2008-11-17 16:37 ` Linus Torvalds
2008-11-17 16:54 ` Rik van Riel
2008-11-17 17:06 ` Linus Torvalds
2008-11-17 17:16 ` [PATCH] vmscan: fix get_scan_ratio comment Rik van Riel
2008-11-17 17:32 ` KOSAKI Motohiro
2008-11-17 17:35 ` Linus Torvalds
2008-11-17 18:53 ` Rik van Riel
2008-11-17 20:23 ` Rik van Riel
2008-11-18 0:06 ` [PATCH] vmscan: evict streaming IO first Rik van Riel
2008-12-01 20:24 ` Andrew Morton
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