From: ebiederm+eric@ccr.net (Eric W. Biederman)
To: "Stephen C. Tweedie" <sct@redhat.com>
Cc: linux-mm@kvack.org
Subject: Re: [2.1.130-3] Page cache DEFINATELY too persistant... feature?
Date: 28 Nov 1998 01:31:00 -0600 [thread overview]
Message-ID: <m1ogpsp93f.fsf@flinx.ccr.net> (raw)
In-Reply-To: "Stephen C. Tweedie"'s message of "Fri, 27 Nov 1998 16:02:51 GMT"
>>>>> "ST" == Stephen C Tweedie <sct@redhat.com> writes:
ST> Hi,
ST> Looks like I have a handle on what's wrong with the 2.1.130 vm (in
ST> particular, its tendency to cache too much at the expense of
ST> swapping).
I really should look and play with this but I have one question.
Why does it make sense when we want memory, to write every page
we can to swap before we free any memory?
I can't see how the policy of staying on a particular method of freeing pages
will hurt in the other cases where if we say we freed a page we actually did,
but in the current swap-out case it worries me.
Would a limit on a number of pages to try to write-to swap before we start trying to reclaim
pages be reasonable?
Eric
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next prev parent reply other threads:[~1998-11-27 12:05 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <199811261236.MAA14785@dax.scot.redhat.com>
[not found] ` <Pine.LNX.3.95.981126094159.5186D-100000@penguin.transmeta.com>
1998-11-27 16:02 ` [2.1.130-3] Page cache DEFINATELY too persistant... feature? Stephen C. Tweedie
1998-11-27 17:19 ` Chip Salzenberg
1998-11-27 18:31 ` Linus Torvalds
1998-11-27 19:58 ` Zlatko Calusic
1998-11-30 11:15 ` Stephen C. Tweedie
1998-11-30 23:13 ` Zlatko Calusic
1998-11-30 12:37 ` Rik van Riel
1998-11-30 15:12 ` Zlatko Calusic
1998-11-30 19:29 ` Rik van Riel
1998-11-30 22:27 ` Zlatko Calusic
1998-11-30 23:11 ` Rik van Riel
1998-11-30 20:20 ` Andrea Arcangeli
1998-11-30 22:28 ` Zlatko Calusic
1998-11-28 7:31 ` Eric W. Biederman [this message]
1998-11-30 11:13 ` Stephen C. Tweedie
1998-11-30 15:08 ` Rik van Riel
1998-11-30 21:40 ` Eric W. Biederman
1998-11-30 22:00 ` Eric W. Biederman
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