Re: MULTIPROCESSOR enabled by default on all Alpha kernels
Jason Thorpe <[email protected]>
| Newsgroups | gmane.os.netbsd.ports.alpha |
|---|---|
| Message-ID | <[email protected]> |
> 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