Red Hat Bugzilla – Bug 426521
Latest metacity is unacceptably slow.
Last modified: 2014-06-18 05:09:51 EDT
Dragging a window around the screen with the latest metacity is unacceptably
slow; it moves the window in jerks about once per second.
Old versions of metacity moved the window smoothly, I guess about 20 times per
CPU usage goes to 100% while this is happening.
I'm guessing that this is due to the alpha-blended composite-manager eye-candy?
I suspect that that needs to be turned off on machines where it is not hardware
accelerated by the graphics card.
Similarly, doing a hide-all-windows on desktop followed by a show-all-windows is
extremely slow, about 1 second per window.
This is with metacity-2.21.5-2.fc9.
You can turn off the compositor with gconf-editor by going to
apps/metacity/general/compositing_manager and unsetting the checkbox.
I don't believe this is turned on by default, so it may have picked up an old
setting on your system.
Thanks, that works.
I'll resolve this as Not-a-bug.
But I don't remember turning this on via gconf-editor (it's not like I normally
ever run gconf-editor), so I'm not quite sure how it got turned on.