From mboxrd@z Thu Jan  1 00:00:00 1970
From: George Dunlap <george.dunlap@eu.citrix.com>
Subject: Re: [RFC PATCH 0/7] Intel Cache Monitoring: Current
 Status and Future Opportunities
Date: Wed, 8 Apr 2015 12:30:28 +0100
Message-ID: <55251154.3020807@eu.citrix.com>
References: <20150404020423.22875.23590.stgit@Solace.station>
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To: Dario Faggioli <dario.faggioli@citrix.com>, Xen-devel <xen-devel@lists.xen.org>
Cc: wei.liu2@citrix.com, Ian.Campbell@citrix.com, andrew.cooper3@citrix.com, Dongxiao Xu <dongxiao.xu@intel.com>, JBeulich@suse.com, Chao Peng <chao.p.peng@linux.intel.com>
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On 04/04/2015 03:14 AM, Dario Faggioli wrote:
> ### Per-vCPU cache monitoring
> 
> This means being able to tell how much of the L3 is being used by each vCPU.
> Monitoring the cache occupancy of a specific domain, would still be possible,
> just by summing up the contributions from all the domain's vCPUs.

One note about this -- vcpu cache utilization may be predictive
short-term, but long-term it's probably less important because the guest
may move processes between vcpus.  So it may make sense to leave the
occupancy stats on a per-domain basis anyway.

Thoughts?

 -George