Subject: Re: slowdown with MI scsi on pmax (ds5000/200)
To: Jason R Thorpe <email@example.com>
From: Chuck Silvers <firstname.lastname@example.org>
Date: 05/21/2001 09:18:00
On Mon, May 21, 2001 at 08:16:38AM -0700, Jason R Thorpe wrote:
> On Mon, May 21, 2001 at 12:35:47AM -0700, Chuck Silvers wrote:
> > could someone who knows the scsi code take a look at this?
> > a similar test on a pc doesn't show any slowdown, so I'm not sure whether
> > the problem is in the scsipi code that only shows up on slow machines
> > or the ncr53c9x code. or something else entirely.
> Can you try running the same test on a SPARCstation, pre-thorpej_scsipi
> and post-thorpej_scsipi?
on a sparc5:
7 sparc5:~ # uname -a
NetBSD sparc5 1.5T NetBSD 1.5T (CHUQ) #123: Fri Mar 23 04:18:18 PST 2001 email@example.com:/home/chs/netbsd/src/sys/arch/sparc/compile/CHUQ sparc
8 sparc5:~ # time pt -w -c 8000 -s 65536 /dev/rsd0g
524288000 bytes transferred in 117.615 secs (4457647 bytes/sec)
0.070u 35.916s 1:57.69 30.5% 0+0k 0+1io 0pf+0w
1 sparc5:~ # uname -a
NetBSD sparc5 1.5V NetBSD 1.5V (CHUQ.perf) #9: Mon May 21 08:56:48 PDT 2001 firstname.lastname@example.org:/home/chs/netbsd/src/sys/arch/sparc/compile/CHUQ.perf sparc
2 sparc5:~ # time pt -w -c 8000 -s 65536 /dev/rsd0g
524288000 bytes transferred in 174.965 secs (2996529 bytes/sec)
0.050u 18.404s 2:55.00 10.5% 0+0k 0+1io 0pf+0w
looks like the sparc esp is affected as well.