Created attachment 767667 [details] strace output Description of problem: When running 'top' I can always see a python process (virt_manager.py) in one of the first places eating ~30 % of CPU time even if it just runs and I'm not doing anything with it. Version-Release number of selected component (if applicable): virt-manager-0.9.5-1.fc17.noarch How reproducible: 100% Steps to Reproduce: 1. run virt-manager 2. (wait) let it initialize and connect to host(s) 3. run top and see it takes a lot of CPU Actual results: 30 % of CPU time eaten by the python process running virt_manager.py Expected results: 0-5 % of CPU time eaten by it Additional info: Attached is the output of the strace attached to the hungry process. It shows that among the other things the virt-manager periodically reads the PNG files with the icons. Other things seem to be okay.
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virt-manager is consuming a lot of CPU on F19 as well. It just doesn't read the icon files again and again.
Upstream has already dropped a lot of the polling we do, but the main missing piece is supporting libvirt's async event APIs so we can drop almost all polling. *** This bug has been marked as a duplicate of bug 836703 ***