Re: Odd problem with many vcpus

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

On 09/21/18 15:32, Manuel Bouyer wrote:
> On Fri, Sep 21, 2018 at 01:35:35PM +0300, Staffan Thomen wrote:
> > I applied the patch and it helped ...almost
>
> thanks, I will request a pullup
>
> > 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.
>
> can you ktrace the python process, to see if it's looping on some
> system call ?

I tried running ktruss -p (twice, with a reboot in between just to be 
sure) and got absolutely nothing. I checked with ntpd and got some 
output so I think I did it right.

This time I noticed that it says "parked" again, but still using up 99% 
of one cpu (load 1.00).

Staffan