Re: What is up with ISM?

From: Anthony Mandic <no.sp_am_at_agd.nsw.gov.au_x>
Date: 1998/06/11
Message-ID: <357F2B37.156E1B6A@agd.nsw.gov.au_x>#1/1

David Freitag wrote:

> Anthony Mandic wrote:
> > The previous poster stated that the Sun4u architecture never had
> > ISM because the hardware to support it wasn't there. So this rules
> > it out for your E150 as well.
>
> This is not correct and enable_ism worked on the 150.

OK, scratch that. I'll take your word for it.

> We originally transferred over with no change to our configuration by
> restoring a backup from the old system. The larger, faster system should
> have been faster without any other modification.

	OK, the 'restoring a backup' comment worries me. Did you
	restore the root partition as well or just data? You may
	have hosed hardware dependancies in /kernel and /platform
	if so.

> If it worked on a single processor system with less of everything, it should
> work at least as well on the larger system. Could SMP actually reduce
> performance?

	Its hard to say without knowing how the application you are
	running works. Theoretically, it shouldn't. I know the E3000
	has a slow bus (I think its in the order of 86MHz). How fast
	is the E150's bus?

-am Received on Thu Jun 11 1998 - 00:00:00 CDT