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

[Eli Mesika]

----- Original Message -----
> From: "Gilad Chaplik" <gchaplik at redhat.com>
> To: "Chuan Liao (Jason Liao, HPservers-Core-OE-PSC)" <chuan.liao at hp.com>
> Cc: engine-devel at ovirt.org, "arch" <arch at ovirt.org>, "vdsm-devel" <vdsm-devel at lists.fedorahosted.org>
> Sent: Monday, March 10, 2014 1:36:20 PM
> Subject: Re: [Engine-devel] Supposed to add per CPU usage related infomation into engine core and vdsm
> 
> ----- Original Message -----
> > From: "Chuan Liao (Jason Liao, HPservers-Core-OE-PSC)" <chuan.liao at hp.com>
> > To: "arch" <arch at ovirt.org>, "vdsm-devel"
> > <vdsm-devel at lists.fedorahosted.org>, engine-devel at ovirt.org
> > Cc: "Gilad Chaplik" <gchaplik at redhat.com>, dfediuck at redhat.com,
> > msivak at 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)
> > 
> 
> +1, since this data can be used for hardware other than NUMA

+1 , can be relevant to engine reports as well ....

> 
> > 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
> > 
> > 
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