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Re: [Xen-devel] Xenoprof on Xen-4.1.2
I can use active domains to profile the PVM virtual machines. And I can get some reasonable data. But As soon as I start xenoprof in passive domain mode, the VM can't run workload immediately (The VM doesn't crash. If I ping the VM from other machine, the response time is really high ). I can't input any commands through the console prompt.
2012/5/30 Malcolm Crossley <malcolm.crossley@xxxxxxxxxx>
On 29/05/12 16:29, Konrad Rzeszutek Wilk wrote:
On Tue, May 29, 2012 at 01:38:37PM +0800, suixiufeng wrote:
Hi:
I want to use xenoprof (patched oprofile-0.9.5) to profile VM (both HVM
and PV) apps and kernel performance based on passive domains. My platform
is as follows:
CPU:Intel(R) Xeon(R) CPU E5620 @ 2.40GHz
Hypervosir: Xen 4.1.2
Dom0 kernel: linux 2.6.38.2
I am not sure whether xenoprof can work on this platform.
* As soon as I start xenoprof in passive domain mode, the VM can't run
workload immediately (The VM doesn't crash. If I ping the VM from other
machine, the response time is really high ). I can't input any commands
through the console prompt. *
Do you have the patches applied to the kernel to use oprofile?
http://lxr.linux.no/linux+*/arch/x86/oprofile/nmi_int.c#L642
http://xenbits.xen.org/hg/xen-unstable.hg/file/52ffce7a036e/xen/arch/x86/oprofile/nmi_int.c#l344
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