From: Zlatko Calusic <zlatko.calusic@iskon.hr>
To: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] Remove nr_async_pages limit
Date: 04 Jun 2001 10:21:32 +0200 [thread overview]
Message-ID: <87iticfyer.fsf@atlas.iskon.hr> (raw)
In-Reply-To: <E156o18-00059a-00@the-village.bc.nu> (Alan Cox's message of "Mon, 4 Jun 2001 07:39:10 +0100 (BST)")
Alan Cox <alan@lxorguk.ukuu.org.uk> writes:
> > This patch removes the limit on the number of async pages in the
> > flight.
>
> I have this in all 2.4.5-ac. It does help a little but there are some other
> bits you have to deal with too, in paticular wrong aging. See the -ac version
>
Yes, I'll check -ac to see your changes. Although, I can't see what is
the impact of the unlimited number of the async pages on the aging, I
don't see a connection?!
In the mean time I tested the patch even more thoroughly under various
loads and I can't find any problem with it. Performance is same or
better a little bit, as you say. :)
My other patch (enlarging inactive dirty list) has a much bigger
impact on the aging process, but I also see only improvement with
it. I think that swap_out path should be tweaked a little bit (it is
too aggressive now), and then things will come up even better.
Regards,
--
Zlatko
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prev parent reply other threads:[~2001-06-04 8:21 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-06-03 12:30 Zlatko Calusic
2001-06-04 6:39 ` Alan Cox
2001-06-04 8:21 ` Zlatko Calusic [this message]
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