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RE: [Xen-devel] performance tools on xen

To: Dulloor <dulloor@xxxxxxxxx>, Fasiha Ashraf <feehapk@xxxxxxxxxxx>
Subject: RE: [Xen-devel] performance tools on xen
From: "Santos, Jose Renato G" <joserenato.santos@xxxxxx>
Date: Thu, 5 Nov 2009 17:59:25 +0000
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Cc: Jeremy Fitzhardinge <jeremy@xxxxxxxx>, Xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxx>, Dante Cinco <dantecinco@xxxxxxxxx>
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Thread-topic: [Xen-devel] performance tools on xen
Having the Xen passive domain support not integrated into mainline OProfile user level tools is a pain.
The problem is that OProfile mantainers are not not happy with the way passive domain samples are stored today (as fake modules named domainX, domainY, etc...) which I agree is ugly . We need to do this properly and separate passive domains samples using OProfile sample directory hierarchy in the same way different CPUs samples are stored. This requires some reasonable amount of work and I don't have the time to work on this myself.
I have been looking for some volunteer to work on that for a while but nobody had taken that task yet.
I would be happy to help anyone who is willing to work on that. Any volunteers?:)

From: Dulloor [mailto:dulloor@xxxxxxxxx]
Sent: Thursday, November 05, 2009 1:21 AM
To: Fasiha Ashraf
Cc: Jeremy Fitzhardinge; Xen-devel; Santos, Jose Renato G; Dante Cinco
Subject: Re: [Xen-devel] performance tools on xen

Even the latest version of oprofile doesn't have the passive-domain profiling option, which I personally prefer. You could get the patches from http://xenoprof.sourceforge.net
A useful guide for xenoprof is http://xen.org/files/summit_3/xenoprof_tutorial.pdf

Maybe it's time those changes are checked-in too (into oprofile). But, Jose knows better.


On Thu, Nov 5, 2009 at 4:12 AM, Fasiha Ashraf <feehapk@xxxxxxxxxxx> wrote:
Please help me starting profiling my xen3.4.1 with pv kernel on fedora11 platform. I have confusions in installing and using latest version of Oprofile with xenoprof.

Fasiha Ashraf

--- On Wed, 4/11/09, Dulloor <dulloor@xxxxxxxxx> wrote:

From: Dulloor <dulloor@xxxxxxxxx>
Subject: Re: [Xen-devel] performance tools on xen
To: "Jeremy Fitzhardinge" <jeremy@xxxxxxxx>
Cc: "Xen-devel" <xen-devel@xxxxxxxxxxxxxxxxxxx>, "Santos, Jose Renato G" <joserenato.santos@xxxxxx>, "Dante Cinco" <dantecinco@xxxxxxxxx>
Date: Wednesday, 4 November, 2009, 5:18 PM

I have attached the patch that will apply to the current pvops tree.
Tested both on 32-bit and 64-bit platforms.

I lost some of the cleanups that I had done to get rid of some
(CONFIG_XEN)ifdefs in a couple of files in oprofile directory. But, I
will work on them incrementally, if this is checked in.


On Wed, Nov 4, 2009 at 12:46 AM, Dulloor <dulloor@xxxxxxxxx> wrote:
> Jeremy, I thought you were able to access my git repo (per your last
> mail). I should be having the patches somewhere around. Will send them
> over soon.
> -dulloor
> On Mon, Nov 2, 2009 at 1:47 PM, Jeremy Fitzhardinge <jeremy@xxxxxxxx> wrote:
>> On 11/02/09 09:56, Dante Cinco wrote:
>>> Jeremy,
>>> I searched Mark Mail for "xenoprof pvops" and found this email from
>>> dulloor:
>>> http://markmail.org/search/?q=xenoprof+pvops#query:xenoprof%20pvops+page:1+mid:yyzbymymat3rtivo+state:results
>>> Do you know if dulloor's patches for xenoprof for linux pvops got applied?
>> No, they fell through the cracks; I think there was some problem that I
>> could never connect to his git server.
>> Dulloor, do you still have a current set of patched we can try?
>> Thanks,
>>    J

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