Date: Wed, 13 Dec 2000 00:14:57 -0800 (PST) From: Matt Dillon <dillon@earth.backplane.com> To: "David O'Brien" <obrien@FreeBSD.ORG> Cc: freebsd-stable@FreeBSD.ORG Subject: Re: Extreme high load with 12/7 4-releng Message-ID: <200012130814.eBD8EvD81021@earth.backplane.com> References: <200012120230.SAA32402@pathlink.net> <200012121801.KAA42878@pathlink.net> <200012122138.NAA69074@pathlink.net> <200012122231.eBCMVE353411@earth.backplane.com> <200012130209.eBD290M79194@earth.backplane.com> <20001212235344.A73861@dragon.nuxi.com>
next in thread | previous in thread | raw e-mail | index | archive | help
:On Tue, Dec 12, 2000 at 06:09:00PM -0800, Matt Dillon wrote:
:> To give you an idea on the difference in performance, running a program
:> on my test box to iterate through a huge (3xMain-memory) file via mmap,
:> alternately touching 8K and accessing 8K, resulted in long system stalls
:> and a pidly pageout rate of maybe 2MB/sec. To disk.
:
:Would you be willing to post your test for people to play with if they
:care to?
Sure. I put my linear pageout daemon tester on my
site: http://apollo.backplane.com/FreeBSD4/
It isn't very sophisticated.
I need to get Paul's permission to put the filesystem thrasher /
low-memory test Yahoo was using up. That test is a great deal more
sophisticated.
-Matt
To Unsubscribe: send mail to majordomo@FreeBSD.org
with "unsubscribe freebsd-stable" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?200012130814.eBD8EvD81021>