[lxc-users] lxd process 100% CPU

[Stéphane Graber]

On Tue, Feb 14, 2017 at 01:43:20PM +0100, Paweł A. Gajda wrote:
> On Sat, Jan 28, 2017 at 4:35 PM, David Favor <david at davidfavor.com> wrote:
> 
> > Colin Holywell wrote:
> >
> > I recently upgraded the lxd installation on my Ubuntu 16.04 system. I used
> > the lxd-stable repo to update the packages Ubuntu provides (version 2.0 I
> > think?) to version 2.7. Everything upgraded fine but now once or twice a
> > day the lxd process starts gobbling up a bunch of CPU time. There is
> > nothing in the /var/log/lxd/lxd.log or syslog to indicate what it is doing.
> > If I restart the lxd service or wait a couple hours it will stops and go
> > back to normal.
> >
> > Does any one know what it is doing? Can I downgrade back to the Ubuntu
> > supplied lxd version and not loose my containers?
> >
> > Try connecting to the process pid with strace + see if that surfaces how
> > to fix problem.
> >
> 
> Same with 2.8, 100% CPU, strace does not help much:
> 
> # strace -p 2580
> strace: Process 2580 attached
> futex(0xfdcdf0, FUTEX_WAIT, 0, NULL
> 
> Any hints? 2.2 works for months now in the same environent (PLD Linux,
> kernel 4.8) without any problem.

Anything in lxd.log? If it's easily reproducible for you, then starting
the daemon with --debug may provide some more information in the log to
figure out what's going on.

-- 
Stéphane Graber
Ubuntu developer
http://www.ubuntu.com
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