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Re: [Xen-devel] Questions about OProfile

from [Anil Madhavapeddy] [Permanent Link][Original]
To: W. Michael Petullo <mike@xxxxxxxx>
Subject: Re: [Xen-devel] Questions about OProfile
From: Anil Madhavapeddy <anil@xxxxxxxxxx>
Date: Tue, 5 Apr 2011 10:49:40 -0700
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On 5 Apr 2011, at 10:03, W. Michael Petullo wrote:

First, what is the status of Xenoprof? The latest patch is against 0.9.5,
but OProfile 0.9.6 is about 16 months old. Is Xenoprof actively
maintained?


There is a crufty pv_ops patch that I forward ported to 2.6.32 in this tree:


It's not suitable for upstreaming, but passive profiling of domains works fine for me using this kernel.  Ian Pratt suggested dropping active profiling in order to simplify the patch: does anyone actually use active profiling?

Jeremy also pointed out the new perf framework in Linux to me at the hackathon, but I haven't had a chance to look at how it works:

-anil

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