Subject: Re: Sigh, will DSSI disks *ever* work with NetBSD?
To: Dave McGuire <firstname.lastname@example.org>
From: Lord Isildur <email@example.com>
Date: 11/22/2002 15:34:38
I'll echo this with my experience with RF72s on a KFQSA.. dog-slow.
Some 3.5" 2 gig dssi disk i have (rf74?) on a KA690 box is quite fast,
though.. well, its running VMS so i havent benchmarked it more than
trivially. I think both the disks and at least some of the dssi
interfaces might be quite slow. Probably more the disks than the
connection. Also, is this a SHAC were talking about, or an SII?
SII is _very_ slow!
On Fri, 22 Nov 2002, Dave McGuire wrote:
> On Friday, November 22, 2002, at 03:03 PM, Stanley Reynolds wrote:
> >> You got better performance over the 3.3MB/sec
> >> qbus than an CPU-based
> >> controller? That's one I'd have to see for myself,
> >> I think.
> > Yes, we did benchmarks on both random and sequential
> > reads of large and small blocks. We also did
> > benchmarks on CPU performance. We also ran a mix of
> > benchmarks to measure CPU utilization, there was no
> > question that the DSSI disk were slower and showed no
> > advantage.
> Wow, that's a big surprise. So the only advantage of DSSI in those
> situations is its cluster interconnect capability.
> Dave McGuire "So you're really not gonna bite on the
> St. Petersburg, FL transvestite bait?" -Doc Shipley