Re: Re: xenoprof: operation 9 failed for dom0 (status: -1)

[Andrew Evans <andrewe@yahoo-inc.com>]

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I too am experiencing this problem. My setup is much less bleeding-edge, 
however:

RHEL 5.3 dom0 (2.6.18-128.el5xen kernel)
xen-3.3.1 from gitco
oprofile-0.9.3-18.el5

Same error message in Xen dmesg ring buffer.

-Andrew

On 11/06/2009 09:27 AM, Dante Cinco wrote:
> I initially tried OProfile 0.9.3 with the oprofile-0.9.3-xen-r2.patch 
> but when I tried running "opcontrol --status" in dom0, I got an error 
> message about cpu_set or cpu_type and prompted to use a newer version 
> of OProfile (I think OProfile 0.9.3 doesn't recognized the Core i7 CPU 
> I'm using). So I downloaded OProfile 0.9.5 and manually applied the 
> same patch and it seems to work except for the problems I described in 
> my previous email. I'm also using Jeremy's latest pvops 2.6.31.5 with 
> Dulloor's xenoprof.patch. I'm also using the patched OProfile 0.9.5 in 
> domU (Linux 2.6.30.1).
>
> I realize I'm using a lot of new stuff like pvops 2.6.31.5 (with Xen 
> 3.5-unstable changeset 20330) and OProfile 0.9.5 but I thought I'd 
> check with you to see if the problems I'm having sound familiar.
>
> Thanks.
>
> Dante
>
> On Thu, Nov 5, 2009 at 6:05 PM, Santos, Jose Renato G 
> <joserenato.santos@hp.com <mailto:joserenato.santos@hp.com>> wrote:
>
>     What version of OProfile are you using?
>     Did you apply the Xen patch available in
>     http://xenoprof.sourceforge.net ?
>     Renato
>
>         ------------------------------------------------------------------------
>         *From:* Dante Cinco [mailto:dantecinco@gmail.com
>         <mailto:dantecinco@gmail.com>]
>         *Sent:* Thursday, November 05, 2009 5:16 PM
>         *To:* Santos, Jose Renato G
>         *Cc:* Xen-devel
>         *Subject:* xenoprof: operation 9 failed for dom0 (status: -1)
>         Renato,
>
>         When I tried running "opcontrol --start" (after previously
>         running "opcontrol --start-daemon") in dom0, I get this error
>         message:
>
>         /usr/local/bin/opcontrol: line 1639: echo: write error:
>         Operation not permitted
>
>         and this message in the Xen console:
>
>         (XEN) xenoprof: operation 9 failed for dom 0 (status : -1)
>
>         It looks like opcontrol is trying to do this: echo 1 >
>         /dev/oprofile/enable
>
>         and it is failing. "operation 9" maps to XENOPROF_start which
>         is consistent with running "opcontrol --start." At first, I
>         ignored the error because it gave the indication "Profiler
>         running" but after I ran "opcontrol --shutdown" followed by
>         "opreport" in dom0, I got this error message:
>
>         error: no sample files found: profile specification too strict ?
>
>         Do you know why the write error is occurring? I followed the
>         steps in xenoprof_tutorial.ppt.
>
>         Dante
>
>
>
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> Xen-devel@lists.xensource.com
> http://lists.xensource.com/xen-devel
>    


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