Hello,
I have some issues with libvirtd getting slow over time.
After a fresh reboot (or systemctl restart libvirtd) virsh list /
virt-install is fast, as expected, but after a couple of months uptime
they both take a significantly longer time.
Virsh list takes around 3 seconds (from 0.04s on a fresh reboot) and
virt-install takes over a minute (from around a second).
Running strace on virsh list it seems to get stuck in a loop on this:
poll([{fd=5<socket:[173169773]>, events=POLLOUT},
{fd=6<anon_inode:[eventfd]>, events=POLLIN}], 2, -1) = 2 ([{fd=5,
revents=POLLOUT}, {fd=6, revents=POLLIN}])
While restarting libvirtd fixes it a restart takes around 1 minute where
ebtables rules etc are recreated and it does interrupt the service. What
could cause this? How would I troubleshoot this?
I'm running Ubuntu 22.04 / libvirt 8.0.0 with 70 active VM’s on a 16/32
core machine with 256GB of ram, CPU is below 50% usage at all times,
memory below 50% usage and swap 0% usage.
Thanks,
André
