From: Andrea Arcangeli <andrea@suse.de>
To: rwhron@earthlink.net
Cc: linux-kernel@vger.kernel.org, ltp-list@lists.sourceforge.net
Subject: Re: VM test on 2.4.13-pre3aa1 (compared to 2.4.12-aa1 and 2.4.13-pre2aa1)
Date: Wed, 17 Oct 2001 04:31:03 +0200 [thread overview]
Message-ID: <20011017043103.D2380@athlon.random> (raw)
In-Reply-To: <20011016081639.A209@earthlink.net> <20011017021242.S2380@athlon.random>
In-Reply-To: <20011017021242.S2380@athlon.random>; from andrea@suse.de on Wed, Oct 17, 2001 at 02:12:42AM +0200
On Wed, Oct 17, 2001 at 02:12:42AM +0200, Andrea Arcangeli wrote:
> > 3 3 0 47424 3788 1172 1412 860 40228 892 40236 789 819 12 23 66
> > 0 5 1 90244 1656 1184 1416 1032 39568 1076 39572 653 425 6 5 89
>
> those swapins could be due mp3blast that is getting swapped out
> continously while it sleeps. Not easy for the vm to understand it has
I noticed that anotehr thing that changed between vanilla 2.4.13pre2 and
2.4.13pre3 is the setting of page_cluster on machine with lots of ram.
You'll now find the page_cluster set to 6, that means "1 << 6 << 12"
bytes will be paged in at each major fault, while previously only "1 <<
4 << 12" bytes were paged in.
So I'd suggest to try again after "echo 4 > /proc/sys/vm/page-cluster"
to see if it makes any difference.
Andrea
next prev parent reply other threads:[~2001-10-17 2:36 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-10-16 12:16 VM test on 2.4.13-pre3aa1 (compared to 2.4.12-aa1 and 2.4.13-pre2aa1) rwhron
2001-10-17 0:12 ` Andrea Arcangeli
2001-10-17 1:32 ` Beau Kuiper
2001-10-17 2:09 ` Andrea Arcangeli
2001-10-18 19:36 ` bill davidsen
2001-10-18 23:27 ` Andrea Arcangeli
2001-10-17 2:31 ` Andrea Arcangeli [this message]
2001-10-17 4:48 ` rwhron
2001-10-17 16:27 ` Linus Torvalds
2001-10-17 15:19 ` Marcelo Tosatti
2001-10-18 19:45 ` Bill Davidsen
2001-10-17 3:59 ` rwhron
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