Re: [libvirt] libvirtd cpu usage
On Thu, May 15, 2008 at 11:47:44AM +0200, Thomas Mueller wrote:
hi there
i'm playing on debian lenny with kvm-66/libvirt-0.4.2 .
if i run top, i see libvirtd is top cpu consumer. if i connect with
strace to libvirtd, i see a thousand times this message:
poll([{fd=3, events=POLLIN}, {fd=6, events=POLLIN|POLLERR|POLLHUP},
{fd=7, events=POLLIN|POLLERR|POLLHUP}, {fd=8, events=POLLIN}, {fd=13,
events=POLLIN|POLLERR|POLLHUP, revents=POLLHUP}, {fd=15,
events=POLLIN|POLLERR|POLLHUP, revents=POLLHUP}, {fd=17,
events=POLLIN|POLLERR|POLLHUP}, {fd=19, events=POLLIN|POLLERR|POLLHUP}],
8, -1) = 2
So this is saying 2 of file descriptors have hit 'end of file' condition
and for some bizarre reason libvirt is not cleaning them up. What do you
do to cause trigger the high CPU usage ? Does it occurr the moment you
start libvirtd ? Or only when you start a VM ? Or only when you shutdown
a VM ? Or something else altogether...
The output of 'lsof -p' on the libvirtd process might be helpful. You
might also try running with --verbose and LIBVIRT_DEBUG=1 envirnoment
variable set and capturing the output
Regards,
Dan.
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