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Date: Tue, 16 Mar 2010 20:41:36 -0400 From: "Frank Ch. Eigler" <fche@...hat.com> To: Anthony Liguori <aliguori@...ux.vnet.ibm.com> Cc: Ingo Molnar <mingo@...e.hu>, Avi Kivity <avi@...hat.com>, "Zhang, Yanmin" <yanmin_zhang@...ux.intel.com>, Peter Zijlstra <a.p.zijlstra@...llo.nl>, Sheng Yang <sheng@...ux.intel.com>, linux-kernel@...r.kernel.org, kvm@...r.kernel.org, Marcelo Tosatti <mtosatti@...hat.com>, oerg Roedel <joro@...tes.org>, Jes Sorensen <Jes.Sorensen@...hat.com>, Gleb Natapov <gleb@...hat.com>, Zachary Amsden <zamsden@...hat.com>, ziteng.huang@...el.com Subject: Re: [PATCH] Enhance perf to collect KVM guest os statistics from host side Hi - On Tue, Mar 16, 2010 at 06:04:10PM -0500, Anthony Liguori wrote: > [...] > The only way to really address this is to change the interaction. > Instead of running perf externally to qemu, we should support a perf > command in the qemu monitor that can then tie directly to the perf > tooling. That gives us the best possible user experience. To what extent could this be solved with less crossing of isolation/abstraction layers, if the perfctr facilities were properly virtualized? That way guests could run perf goo internally. Optionally virt tools on the host side could aggregate data from cooperating self-monitoring guests. - FChE -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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