a kernel built from the thorpej_scsipi_beforemerge tag:

1 sparc5:~ # uname -a
NetBSD sparc5 1.5U NetBSD 1.5U (GENERIC) #1: Mon May 21 18:43:14 PDT 2001     chs@spathi.chuq.com:/home/chs/netbsd/src/tmp/syssrc/sys/arch/sparc/compile/GENERIC sparc
2 sparc5:~ # time pt -w -c 8000 -s 65536 /dev/rsd0g
524288000 bytes transferred in 99.793 secs (5253735 bytes/sec)
0.080u 19.214s 1:39.82 19.3%    0+0k 0+4io 0pf+0w


so it's looking like it's the thorpej_scsipi changes that have
caused the slowdown.  manuel or jason, could one of you look into this?

-Chuck


On Mon, May 21, 2001 at 05:30:11PM -0000, eeh@netbsd.org wrote:
> 
> 	on a sparc5:
> 
> 	7 sparc5:~ # uname -a
> 	NetBSD sparc5 1.5T NetBSD 1.5T (CHUQ) #123: Fri Mar 23 04:18:18 PST 2001     chs@spathi.chuq.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     chs@spathi.chuq.com:/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
> 
> Let's see...  TQ went in 2000/11/30.  I removed a bunch of DELAY()s
> on 2000/12/20.  Those are before the problem began.
> 
> FAS support went in 2001/03/29.  thorpej_scsipi went in 2001/04/25.  
> I suppose the cause is probably one or the other of those.
> 
> Can you try a pre-thorpej_scsipi kernel and see if it still has
> the problem?
> 
> Eduardo