Re: [Engine-devel] Supposed to add per CPU usage related infomation into engine core and vdsm

From: "Chuan Liao (Jason Liao, HPservers-Core-OE-PSC)" <chuan.liao(a)hp.com&gt; To: "arch" <arch(a)ovirt.org&gt;, "vdsm-devel" <vdsm-devel(a)lists.fedorahosted.org&gt;, engine-devel(a)ovirt.org Cc: "Gilad Chaplik" <gchaplik(a)redhat.com&gt;, dfediuck(a)redhat.com, msivak(a)redhat.com Sent: Monday, March 10, 2014 11:17:13 AM Subject: Supposed to add per CPU usage related infomation into engine core and vdsm Hi All, In order to support NUMA and guest NUMA feature in ovirt. We need per NUMA node CPU usage or per CPU usage related information on engine core. This information will be used for VM who have NUMA aware information and find the best Host to run it on with best performance. Approach 1: 1. Sample data in vdsm for each CPU stats. (sys, usr, iowait, idle) 2. Calculate the each CPU usage information. (%sys, %usr, %iowait, %idle) 3. Transport the usage data to engine core. 4. Engine core merge per NUMA node CPU usage. (%sys, %usr, %iowait, %idle)

Approach 2: 1. Sample data in vdsm for each CPU stats. (sys, usr, iowait, idle) 2. Calculate the each CPU usage information. (%sys, %usr, %iowait, %idle) 3. VDSM merge per NUMA node CPU usage. (%sys, %usr, %iowait, %idle) 4. Transport the usage data to engine core. Which one do you prefer, and why, or other solution. Best Regards, Jason Liao