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