Subject: RE: disk caching
To: 'firstname.lastname@example.org' <email@example.com>
From: Andy Sporner <firstname.lastname@example.org>
Date: 04/12/2000 11:33:23
I am not sure I like their approach, but as you
have already figured out, there is some advantage
to throwing memory at it.
Speaking somewhat out of a little ignorance, isn't
there a BUFPCT kernel tunable that instructs how
much system memory to assign to the disk buffer
What would be cool is to be able to dynamically
change this on demand.
> -----Original Message-----
> From: email@example.com [mailto:firstname.lastname@example.org]
> Sent: Wednesday, April 12, 2000 11:01 AM
> To: email@example.com
> Subject: disk caching
> So I've noticed that linux seems to be able to fudge a heck of a lot
> of disk io performance from just throwing huge amounts of cache at the
> problem. Although inelegant, this approach really does seem to move
> disk io right along. I'm wondering if the same effect can be
> in NetBSD, or if NetBSD has an even better approach to the problem.
> Currently linux does have measurably better filesystem
> performance than
> NetBSD (even when fses are mounted asynch/noatime) at least according
> to hbench (I measured NetBSD 1.4.2 against linux 2.2.14), so this is
> more than idle curiosity.