Re: MULTIPROCESSOR enabled by default on all Alpha kernels

My only SMP Alpha is a CS20 running DS20L firmware. I know there were issues at one time with the built-in NIC and SCSI controllers. Did those ever get resolved? If so, I’ll get it racked and powered up.

I had swapped the SCSI controller out with one for a DS20L to run Tru64 on it at one time, but I still have the original (if I remember correctly, NetBSD didn’t like the DS20L one). I know one was Adaptec, I forget what the other one was.

-Dustin
On Sep 19, 2020, 11:53 AM -0500, Jason Thorpe <[email protected]>, wrote:
>
>
> > On Sep 19, 2020, at 9:39 AM, Izumi Tsutsui <[email protected]> wrote:
> >
> > > The system has been very stable for me, and is feeling much snappier.
> >
> > I'm afraid if timecounter(9) using multiple PCC processor clocks
> > works properly.
>
> Yes, I think there are some known issues. Taylor (CC'd) also had some thoughts on it?
>
> >
> > I've committed it back in 2007 to switch alpha port to MI timecounter(9),
> > https://mail-index.netbsd.org/source-changes/2007/07/21/0012.html
> > https://mail-index.netbsd.org/source-changes/2007/07/21/0013.html
> > but IIRC ad@ pointed out that x86 TSC implementation (that alpha's
> > PCC implementation was based on) was problematic.
> >
> > There was also a report that sleep(1) or TOD etc. didn't work
> > as expected if timecounter(9) was pcc (and worked fine with
> > clockinterrupt).
> >
> > ---
> > Izumi Tsutsui
>
> -- thorpej
>