Subject: Q650 SCSI speed with new kernel
To: NetBSD-Mac68K List <port-mac68k@netbsd.org>
From: Daniel Parks <danielp@reed.edu>
List: port-mac68k
Date: 01/05/2001 21:05:53
I decided to try building my own kernel, my excuse being the SCSI 
speed problems with 1.5.

I tried building the kernel with -O and -O2, but neither produced 
much better results than the kernel that came with 1.5_BETA2. 
Actually, -O2 did worse. I don't know what reasonable speeds, but it 
seemed like speeds that have been posted on the list have been 
somewhat better. Am I doing something stupid? The changes have been 
added to -current, right?

               -------Sequential Output-------- ---Sequential Input-- --Random--
               -Per Char- --Block--- -Rewrite-- -Per Char- --Block--- --Seeks---
Machine    MB K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU  /sec %CPU
Q650 Old   60   358 99.0   530 97.9   259 98.6   343 99.7   477 96.3  24.6 44.4
Q650 New   60   359 99.0   520 96.9   264 99.2   347 99.6   488 96.5  24.5 44.9
Q650 New2  60   347 96.6   508 95.7   251 96.0   329 97.4   476 94.1  23.3 43.3

Old was NetBSD 1.5_BETA2 (GENERIC) #0, which I downloaded with the system.
New is NetBSD 1.5.1_ALPHA (MORIA) #0, downloaded as a tarball on Jan 2 or 3,
         compiled with -O and -M68040 (according to mk.conf).
New2 is NetBSD 1.5.1_ALPHA (MORIA) #0, supped on Jan 5, compiled with -O2 and
         -M68040 (again, according to mk.conf).

This is a Q650 with 1GB external HD (I didn't try bonnie on the 
internal... is there a difference in speed between the external and 
internal SCSI?) 20MB of RAM, and 100 MB of swap on the external HD.

Thanks,
Daniel