knotify4 going crazy & breeding like rabbits

gene heskett gheskett at
Tue Feb 21 11:40:40 GMT 2012

On Tuesday, February 21, 2012 06:17:39 AM Kishore did opine:

> On Monday 20 Feb 2012 6:00:15 PM gene heskett wrote:
> > Greetings;
> > 
> > I have so far today, killed around 75 copies of /usr/bin/knotify4
> > which is pegging out all 4 cores of my phenom, and running it up to
> > 70C+.
> > 
> > Killing all copies (which is puzzling because killall can't find them
> > but htop can) cleans the system up & brings back normal operation.
> > 
> > But in half an hour I am back to 4 to 6 copies and a pegged cpu.
> > 
> > This seems to go along with an uptime of 10 days or more, currently at
> > 18 days.
> > 
> > Is there a permanent fix for this other than switching to (I'd rather
> > just have somebody shoot me) gnome or even (quite a bit better IMO)
> > xfce?
> Are KDE sound/notifications working at all when that happens? I have
> noticed that when something underlying fails in the sound system,
> knotify goes crazy.

Incoming mail makes a pong, from kmail, and I believe that was still 
working albeit with a hoarse voice, I'd assume because the machine was 
pegged out.  And as of this morning, only 2 copies are seen and everything 
is working nominally.  It looks like killing the one clear at the bottom of 
the htop listing when sorted by cpu%, may be the reset key. Killing all the 
cpu hogs, which took about half an hour because it was often 30 seconds 
after sending the top one a signal 9, before htop would recognize another 
F9 click.  cpu usage didn't fall below 99% until there were only 3 hogs 
left on this 4 core box.  Killall came back clean on the first call, then 
couldn't find any more to kill, while I still had most of a screen full 
according to htop.

Each was using about 13% of a cpu when I started, and as I killed them, the 
remaining ones just increased their usage.  When I was down to one, it was 
still using 100% of the core it was on, but was bouncing from core to core.

If it means anything, the running kernel is a BFS enabled kernel, a major 
increase in interactivity compared to CFS.  Sweet.

Could that be a clue?

Cheers, Gene
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