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[ivant <985661@xxxxxxxxxxxxxxxxxx>]

I'm not sure compiz is to blame here. On my system (core i3 / ati radeon
/ 64bit ubuntu) the load avarage is high (see below) even when runnign
other window managers / desktops, e.g. gnome-shell (including classic
and without acceleration), unity-2d, xfce.

I logged in at the text cosole and stopped X (service lightdm stop) and
the load dropped to 0.03.  Just starting X (/usr/bin/X) made the load go
to 0.1 - 0.17.  Starting lightdm got it to 0.3 - 0.4 and it was the same
with xdm as well.

I tried this with fglrx, fglrx-updates, and without any of them. The
results were generally the same. So I think X.org is the culprit.

P.S. Strangely, it seems that neither the CPU nor the disk usage is high
when these loads occur.

P.P.S. Another strange thing, that I've noticed is, that if the display
goes blank after some time of inactivity the CPU usage is gets higher
and just waking it up brings the CPU to previous levels.

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https://bugs.launchpad.net/bugs/985661

Title:
  High load average

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