Description of problem: This is actually a problem of netcf which libvirt uses to count the number of interfaces, but it results in a libvirt problem so I think it should be solved here as well, by not using too much cpu in the case netcf fails repeatedly. Version-Release number of selected component (if applicable): libvirt-daemon-0.10.2.1-2.fc18.x86_64 netcf-libs-0.2.2-1.fc18.x86_64 augeas-0.10.0-5.fc18.x86_64 How reproducible: 100% Steps to Reproduce: 1. sudo touch /etc/sysconfig/network-scripts/ifcfg-\( Actual results: top shows libvirt using 40% cpu Expected results: no significant change in cpu usage Additional info: The fault path is actually in augeas usage by netcf, and most of the cpu is in regexp code in glibc per perf record. I couldn't grok the augeas code so I just started removing the ifcfg files until finding the faulty one.
This doesn't seem to be an issue with F20 at least, and given that F18 is EOL real soon, just closing