----- Original Message -----
From: "Nir Soffer" <nsoffer@redhat.com> To: "Francesco Romani" <fromani@redhat.com> Cc: devel@ovirt.org, "Martin Sivak" <msivak@redhat.com> Sent: Sunday, June 29, 2014 10:34:08 AM Subject: Re: [ovirt-devel] XML benchmarks
CPU measurement: just opened a terminal and run 'htop' on it. CPU profile: clustered around the sampling interval. Usage negligible most of time, peak on sampling as shown below
300 VMs minidom: ~38% CPU cElementTree: ~5% CPU
What is 38% - (38% of one core? how may cores are on the machine?)
4 cores: 2 physical, 2 logical. I'm prepping a more precise test using a better and less ambiguous indicator.
Seeing this load created by parsing libvirt xml every 15 seconds, I think we should consider decreasing the sample rate suggested in http://gerrit.ovirt.org/28712 Or collecting the data in another way.
To collect the data in another way, maybe just after the event which will trigger the change would be the best way. As last resort, to move te code to use cElementTree. Bests, -- Francesco Romani RedHat Engineering Virtualization R & D Phone: 8261328 IRC: fromani