From: Ed Tomlinson <tomlins@cam.org>
To: Marcelo Tosatti <marcelo@conectiva.com.br>
Cc: linux-mm@kvack.org
Subject: Re: pre2 swap_out() changes
Date: Sun, 14 Jan 2001 10:51:29 -0500 [thread overview]
Message-ID: <01011410512900.02185@oscar> (raw)
In-Reply-To: <Pine.LNX.4.21.0101140136200.11917-100000@freak.distro.conectiva>
Hi,
A couple of observations on the pre2/pre3 vm. It seems to start swapping out
very quicky but this does not seem to hurt. Once there is memory preasure
and swapin starts cpu utilization drops thru the roof - kernel compiles are
only able to drive the system at 10-20% (UP instead of 95-100%). Once the
system stops swapping (in) there are some side effects. Closing windows
in X becomes jerky (ie you see blocks get cleared and refreshed). If little
or no swapping has occured X is much faster.
With the patch marcelo posted last night things change. Now It can use cpu
when swapping. It does seem to start swaping (in and out) faster but the
system remains more interactive than above. I still see the X effect though.
Over all I think 2.4.0+marcelo's first patch(es) was fastest.
Ed Tomlinson
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next prev parent reply other threads:[~2001-01-14 15:51 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-01-11 10:38 Marcelo Tosatti
2001-01-11 18:49 ` Linus Torvalds
2001-01-12 11:35 ` Zlatko Calusic
2001-01-12 19:45 ` Linus Torvalds
2001-01-12 19:22 ` Marcelo Tosatti
2001-01-13 0:23 ` Linus Torvalds
2001-01-12 22:41 ` Marcelo Tosatti
2001-01-13 0:45 ` Linus Torvalds
2001-01-17 7:05 ` Rik van Riel
2001-01-18 11:54 ` Rik van Riel
2001-01-13 11:41 ` Zlatko Calusic
2001-01-17 7:08 ` Rik van Riel
2001-01-13 11:51 ` Zlatko Calusic
2001-01-14 2:39 ` Marcelo Tosatti
2001-01-14 4:36 ` Linus Torvalds
2001-01-14 3:50 ` Marcelo Tosatti
2001-01-14 15:51 ` Ed Tomlinson [this message]
2001-01-14 14:13 ` Marcelo Tosatti
2001-01-14 16:15 ` Zlatko Calusic
2001-01-14 17:22 ` Zlatko Calusic
2001-01-17 7:16 ` Rik van Riel
2001-01-17 7:15 ` Rik van Riel
2001-01-17 7:12 ` Rik van Riel
2001-01-11 20:52 Benjamin Redelings I
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