From: Andrew Morton <akpm@osdl.org>
To: Nick Piggin <nickpiggin@yahoo.com.au>
Cc: miquels@cistron.nl, linux-mm@kvack.org
Subject: Re: Keeping mmap'ed files in core regression in 2.6.7-rc
Date: Tue, 15 Jun 2004 20:50:17 -0700 [thread overview]
Message-ID: <20040615205017.15dd1f1d.akpm@osdl.org> (raw)
In-Reply-To: <40CFBB75.1010702@yahoo.com.au>
Nick Piggin <nickpiggin@yahoo.com.au> wrote:
>
> Can you send the test app over?
logical next step.
> Andrew, do you have any ideas about how to fix this so far?
Not sure what, if anything, is wrong yet. It could be that reclaim is now
doing the "right" thing, but this particular workload preferred the "wrong"
thing. Needs more investigation.
> >
> > See how "cache" remains stable, but free/buffers memory is oscillating?
> > That shouldn't happen, right ?
> >
>
> If it is doing IO to large regions of mapped memory, the page reclaim
> can start getting a bit chunky. Not much you can do about it, but it
> shouldn't do any harm.
shrink_zone() will free arbitrarily large amounts of memory as the scanning
priority increases. Probably it shouldn't.
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next prev parent reply other threads:[~2004-06-16 3:50 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-06-08 14:29 Miquel van Smoorenburg
2004-06-12 6:56 ` Nick Piggin
2004-06-14 14:06 ` Miquel van Smoorenburg
2004-06-15 3:03 ` Nick Piggin
2004-06-15 14:31 ` Miquel van Smoorenburg
2004-06-16 3:16 ` Nick Piggin
2004-06-16 3:50 ` Andrew Morton [this message]
2004-06-16 4:03 ` Nick Piggin
2004-06-16 4:23 ` Andrew Morton
2004-06-16 4:41 ` Nick Piggin
2004-06-17 10:50 ` Miquel van Smoorenburg
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