Re: Odd problem with many vcpus

[Staffan Thomen <duck%shangtai.net@localhost>]

On Fri, Sep 21, 2018 at 09:10:31AM +0200, Manuel Bouyer wrote:
> On Thu, Sep 20, 2018 at 07:50:22PM +0300, Staffan Thomén wrote:
> > [...]
> > netbsd:breakpoint+0x5:  leave
> > db{0}> ps
> > PID    LID S CPU     FLAGS       STRUCT LWP *               NAME WAIT
> > 18620    1 3   0         0   ffffa0006bfa8120             dhcpcd tstile
> > 17554    1 3   0        80   ffffa00083f575c0               sshd netio
> > 20448    1 3   0         0   ffffa00083f45160               sshd psrlz
> 
> It's possible that your running in the issue I fixed here:
> http://mail-index.netbsd.org/source-changes/2018/07/24/msg097006.html
> 
> Could you try applying this change to netbsd-8 and rebuild your kernel ?

I applied the patch and it helped ...almost

The system now remains responsive, I can log in (and out) via ssh
without issue, but the python process that the firefox build runs
still just sits there spinning on one cpu. A ^T shows it no longer
as "parked" though.

With <=12 vcpus that stage took less than a minute and it's been
running for half an hour now, so something is still stuck somewhere.

Staffan