Subject: Re: Limiting disk I/O?
To: Jukka Marin <firstname.lastname@example.org>
From: Steven M. Bellovin <email@example.com>
Date: 11/13/2007 10:38:28
On Tue, 13 Nov 2007 08:52:55 +0200
Jukka Marin <firstname.lastname@example.org> wrote:
> On Tue, Nov 13, 2007 at 07:40:09AM +0100, Michael van Elst wrote:
> > What happened to
> > http://netbsd-soc.sourceforge.net/projects/congest/ ?
> Wouldn't it be simpler to implement a new sysctl'able variable to
> limit the tps to some percentage of the disk I/O capacity? No need
> to monitor what the processes are doing.
No, I don't think so -- I want processes that only need to to a little
I/O to to be able to get in even though the disk is busy. We do that
for CPU consumption; why not for disk, too?
--Steve Bellovin, http://www.cs.columbia.edu/~smb