From: David Rientjes <rientjes@google.com>
To: Minchan Kim <minchan.kim@gmail.com>
Cc: Andrew Morton <akpm@linux-foundation.org>,
Mel Gorman <mel@csn.ul.ie>, Con Kolivas <kernel@kolivas.org>,
linux-mm@kvack.org
Subject: Re: [patch] mm: adjust kswapd nice level for high priority page allocators
Date: Tue, 2 Mar 2010 16:14:57 -0800 (PST) [thread overview]
Message-ID: <alpine.DEB.2.00.1003021610530.14687@chino.kir.corp.google.com> (raw)
In-Reply-To: <28c262361003012029j1d17a0dch8987c0d6d939959e@mail.gmail.com>
On Tue, 2 Mar 2010, Minchan Kim wrote:
> > Why do you reset nice value which set by set_kswapd_nice?
>
> My point is that you reset nice value(which is boosted at wakeup_kswapd) to 0
> before calling balance_pgdat. It means kswapd could be rescheduled by nice 0
> before really reclaim happens by balance_pgdat.
wakeup_kswapd() wakes up kswapd at the finish_wait() point so that it has
the nice value set by set_kswapd_nice() when it calls balance_pgdat(),
loops, and then sets it back to the default nice level of 0.
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next prev parent reply other threads:[~2010-03-03 0:15 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-03-01 10:14 David Rientjes
2010-03-01 13:52 ` Mel Gorman
2010-03-01 17:56 ` David Rientjes
2010-03-01 18:04 ` Mel Gorman
2010-03-08 23:23 ` David Rientjes
2010-03-02 23:48 ` Andrew Morton
2010-03-01 16:02 ` Minchan Kim
2010-03-02 4:29 ` Minchan Kim
2010-03-03 0:14 ` David Rientjes [this message]
2010-03-03 6:25 ` Minchan Kim
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