kern/48178: Extremely slow disk read/write

[kolbycrouch%gmail.com@localhost]

>Number:         48178
>Category:       kern
>Synopsis:       Extremely slow disk read/write
>Confidential:   no
>Severity:       serious
>Priority:       high
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Wed Sep 04 06:20:01 +0000 2013
>Originator:     Kolby Crouch
>Release:        6.99.23
>Organization:
NA
>Environment:
NetBSD 6.99.23 GENERIC AMD64
>Description:
On NetBSD-current my disk speeds are terribly slow on 2 different machines. on 
one of the machines, running STABLE is the solution, but the other machine has 
new hardware which I want to test with current. I've tried formatting the disk 
as ffs1 and ffs2, used noatime and log options at mount, neither works. With 
log turned on, speeds "seem" good at first until the system freezes for a 
moment to catch up with the log. At this rate pkgsrc takes around 1+ hour to 
extract, many times longer than on any other system I have tried (OpenBSD, 
FreeBSD, DragonFly, Linux) 
>How-To-Repeat:
N/A
>Fix:
Use stable :)