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Re: [Xen-devel] About the oprofile tools and related profiling tools

On Mon, May 30, 2011 at 11:25:10AM +0800, Lv, Hui wrote:
> Hi, list
> I found the oprofile tools were not supported in PVOPS domain0(from jeremy's 
> tree). Someone has made the patch to enable it. When I applied such patch, 
> xenoprofile can work. But the results were not trusted. (I think, part of 
> this reason was due to xen, which changed the NMI handling way, but did not 
> update the xenoprofile part)

Hm, I don't think the Jeremy's tree had support for it.

Mike Petullo wrote a patch for the oprofile support and Xen for 2.6.39 kernels.

If you want to try it out, I would suggest you play with devel/next-2.6.39 in my
git tree git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen.git.

> So my question is that, does anyone still maintain this tools? Or, do xen 
> guys have a plan to enable more powerful profiling tools like 'perf' in 
> native Linux or something else.

Would love to, except that I don't think anybody has signed up for that yet.

> One of my basic feeling about xen's performance profiling tools is that the 
> functional level profiling tools like oprofile were neglected recently.
> Best regards!
> Lv,hui

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