Subject: Re: pciide performance on alpha
To: Jarle Greipsland <firstname.lastname@example.org>
From: Jason Thorpe <email@example.com>
Date: 08/12/1999 03:30:00
On Thu, 12 Aug 1999 11:21:46 +0200
Jarle Greipsland <firstname.lastname@example.org> wrote:
> ccd0 is striped across 3 RZ29B disks on a NCR53c860 fast, narrow controller.
> sd0 is an IBM DDRS-39130W disk on an Qlogic 1040B controller.
> wd0 is an IBM-DJNA-370910 disk on the builtin IDE controller.
> When reading directly from /dev/rwd0c I get slightly better numbers,
> 15-16MB/s sustained. Generating a file (from /dev/zero) on wd0g
> writes approximately 14-15 MB/s through the file system (plain FFS).
Modern IDE can be a bit faster than SCSI because the per-command overhead
is lower in the protocol. So, this isn't surprising.
-- Jason R. Thorpe <email@example.com>