From: David Rientjes <rientjes@google.com>
To: Mel Gorman <mel@csn.ul.ie>
Cc: Andrew Morton <akpm@linux-foundation.org>,
Con Kolivas <kernel@kolivas.org>,
linux-mm@kvack.org
Subject: Re: [patch] mm: adjust kswapd nice level for high priority page allocators
Date: Mon, 8 Mar 2010 15:23:35 -0800 (PST) [thread overview]
Message-ID: <alpine.DEB.2.00.1003081521380.1431@chino.kir.corp.google.com> (raw)
In-Reply-To: <20100301180412.GF3852@csn.ul.ie>
On Mon, 1 Mar 2010, Mel Gorman wrote:
> Can figures also be shown then as part of the patch? It would appear that
> one possibility would be to boot a machine with 1G and simply measure the
> time taken to complete 7 simultaneous kernel compiles (so that kswapd is
> active) and measure the number of pages direct reclaimed and reclaimed by
> kswapd. Rerun the test except that all the kernel builds are at a higher
> priority than kswapd.
>
Ok, I'll collect those statistics.
> When all the priorities are the same, the reclaim figures should match
> with or without the patch. With the priorities higher, then the direct
> reclaims should be higher without this patch reflecting the fact that
> kswapd was starved of CPU.
>
Agreed.
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next prev parent reply other threads:[~2010-03-08 23:23 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 [this message]
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
2010-03-03 6:25 ` Minchan Kim
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