Subject: Quadra SCSI performance
To: Hauke Fath <hauke@Espresso.Rhein-Neckar.DE>
From: Allen Briggs <briggs@wasabisystems.com>
List: port-mac68k
Date: 12/16/2000 22:25:48
> 1.5 has quite a SCSI performance problem on Quadra class machines. "bonnie"
> shows less than half the 1.4.1 performance for 1.5 on my Quadra 700.

The patch that I sent earlier will help some.  On my Q950, I see:

              -------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
Pre-patch  10   299 98.4   413 99.0   226 97.8   329 98.0   446 97.3  40.8 67.9
w/ patch   10   347 97.4   514 98.3   282 98.8   386 98.4   565 98.9  44.1 68.0

So there's clearly something else going on, too.  I'll try to poke
around some more...

-allen

-- 
 Allen Briggs                     briggs@wasabisystems.com
 http://www.wasabisystems.com/    Quality NetBSD CDs, Sales, Support, Service