On Fri, 16 Oct 1998, Wally Hinson wrote:

: Hey, out of curiosity, how much of a difference is there between the
: SS1+/SS2 onboard SCSI controllers?  I've been running NetBSD on an SS1+
: with what the esp driver reports to be the original revision of the chip,
: and it's *slow* -- I seem to spend a lot of time waiting for the disk.

That depends how much disk activity you do on a regular basis and how many
physical disks you have.

My own subjective use shows the SS2 as having better performance on the
scale of 40-50% extra, but it seems to be more CPU than disk, truly.  
Perhaps it's all those CPU-expensive context switches in the interrupt goo.

-- 
-- Todd Vierling (Personal tv@pobox.com; Bus. todd_vierling@xn.xerox.com)