From: Rik van Riel <riel@conectiva.com.br>
To: Marcelo Tosatti <marcelo@conectiva.com.br>
Cc: Linus Torvalds <torvalds@transmeta.com>, linux-mm@kvack.org
Subject: Re: Aggressive swapout with 2.4.1pre4+
Date: Wed, 17 Jan 2001 18:27:10 +1100 (EST) [thread overview]
Message-ID: <Pine.LNX.4.31.0101171825340.30841-100000@localhost.localdomain> (raw)
In-Reply-To: <Pine.LNX.4.21.0101160138140.1556-100000@freak.distro.conectiva>
On Tue, 16 Jan 2001, Marcelo Tosatti wrote:
> Currently swap_out() scans a fixed percentage of each process RSS without
> taking into account how much memory we are out of.
>
> The following patch changes that by making swap_out() stop when it
> successfully moved the "needed" (calculated by refill_inactive()) amount
> of pages to the swap cache.
>
> This should avoid the system to swap out to aggressively.
>
> Comments?
The big problem doesn't seem to be this. The big problem
seems to be that we don't do IO in page_launder() smooth
enough.
All the above patch does is make _allocation_ of swap and
clearing of page table entries smoother, but those are not
the actions that have a performance impact.
(and yes, I tested all these things while I was sitting in
my hotel room for 5 days without any net access)
regards,
Rik
--
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prev parent reply other threads:[~2001-01-17 7:27 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-01-16 3:57 Marcelo Tosatti
2001-01-16 18:41 ` Zlatko Calusic
2001-01-17 7:56 ` Christoph Rohland
2001-01-17 7:27 ` Rik van Riel [this message]
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