Re: btrfs-cleaner leaves CPU pinned to 100%

[Josef Bacik <jbacik@fb.com>]

Adam Gradzki <adam.gradzki@gmail.com> wrote on Wed [2013-Dec-04 15:27:58 +0000]:
> Adam G <adam.gradzki <at> gmail.com> writes:
> 
> > 
> > Hello,
> > 
> > After a recent kernel upgrade I noticed the fans blowing at full
> > throttle on my laptop.
> > 
> > There is currently very low load on the machine and nothing out of the
> > ordinary has occurred to lead me to believe this is normal behavior.
> > 
> > Here is a link to the perf output I managed to capture
> > 
> > http://pastebin.com/a5cAy7Dw
> > 
> > Please let me know if I may be of any further assistance.
> > 
> > Regards,
> > 
> > Adam Gradzki
> > --
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> > 
> > 
> 
> I would like to add an updated perf report I took shortly after the first 
> one yesterday (600 seconds this time).
> 
> http://www.pastebin.ca/2492119
> 
> Removing autodefrag from /etc/fstab has ameliorated my troubles for the time 
> being.
> 

Do you have a lot of snapshots?  I'm working on this currently so hopefully it
will be fixed soon.  If you have issues again can you use perf record -g so it
pulls the stacktraces and then you can drill down before you post so I can
figure out where we're spending all of our time.  Thanks,

Josef