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Re: [Xen-devel] [PATCH] Xenoprof patches for xen-unstable

Santos, Jose Renato G wrote:


This is weird. Something seems wrong. I am not familiar with the benchmark you are
 running. Is this something easy to try?
 If you could send me the code and some instructions on
 how to use it, I can try running the same benchmark
 in my environment.
 I will also spend sometime looking more carefully
 at xenoprof and my tests to see if I find anything wrong

Although I can not redistribute SDET, it probably is available to you since you are at HP:


It's actually quite a useful benchmark as it has a lot of fork+exec and you can really stress a system with it.



-----Original Message-----
From: Andrew Theurer [mailto:habanero@xxxxxxxxxx] Sent: Tuesday, May 31, 2005 9:08 AM
To: Santos, Jose Renato G
Cc: Xen-devel@xxxxxxxxxxxxxxxxxxx
Subject: Re: [Xen-devel] [PATCH] Xenoprof patches for xen-unstable

On Wednesday 25 May 2005 14:10, Santos, Jose Renato G wrote:

 I have attached patches for enabling system wide profiling
 using oprofile for xen unstable.
 The patches were generated against change-set 1.1507 (May 22).
 The 4 attached files are

 1) xenoprof.txt:
         - xenoprof overview and user guide
 2) xenoprof-1.1-xen-3.0-devel.patch:
      - patch for xen
 3) xenoprof-1.1-linux-2.6.11:
      - patch for linux. Note that this needs to be applied
        twice, once to linux-2.6.11-xen0 and once to
        linux-2.6.11-xenU. (This is different than the last
        patch which was created against the linux sparse tree).
 4) xenoprof-1.1-oprofile-0.8.2:
      - patch for oprofile version 0.8.2
Thanks very much for these; this is going to be extremly helpful. I am using these on xen-unstable-bk-1.1518 currently. One problem: so far I have not observed any ticks in xen-syms. I have tried SDET benchmark, which on your previous patches (for xen-2.0-testing), I would get about 12% of ticks in xen-syms.

This is on a single cpu xen0 domain with no other domains running. I verified that the XENIMAGE and XEN_RANGE were getting passed to oprofiled correctly. I do not specify any active or passive domains since this is the only domain running. Any ideas why I would not get any ticks for xen-syms?

Has anyone else tried xenoprofile?



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