Subject: Bad write performance in NetBSD-current
To: None <port-pmax@NetBSD.ORG>
From: Toru Nishimura <nisimura@itc.aist-nara.ac.jp>
List: port-pmax
Date: 01/14/1997 10:34:38
Hi, everyone.
Since I replaced my source code tree with NetBSD-current, I have been
experiencing severe write performance degregation on DS5000/25. Does
anyone out there conform (or deny) this symptom?
/// Details ///
24MB DS5000/25 with addtional sfb installed. With NetBSD-1.2 release
genvmunix kernel, iozone reports figures around (over 10MB I/O tests);
write 700000 - 800000
read 1100000 - 1110000
range. But, using a kernel compiled from NetBSD-current/pmax (96-12-14);
write 350000 - 360000
read 1100000 - 1110000
Note that read performance seems unchanged. Interactive performance
appearently got worse than NetBSD-1.2 kernel. What's wrong my kernel?
Tohru Nishimura
Nara Institute of Science and Technology