Re: Is it possible that xenoprof active domain profiling using pvops jeremy's kernel

[Ahmad Hassan <ahmad.hassan@gmail.com>]

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Hi Jose,

Did you manage to resolve the following xenoprof error:

domU# opcontrol --start --event=L2_RQSTS:100000 --xen=/boot/xen-syms-3.4.2
--vmlinux=/boot/vmlinux-2.6.
31.6-domU-xenoprof
/usr/local/bin/opcontrol: line 367: timer: command not found
You cannot specify any performance counter events
because OProfile is in timer mode.


I am facing the same problem. I am using xen-3.4.1 on dom0. Do I need to
install xen on domU as well?

My hardware is AMD-64.

Thanks for the help.

Best Regards, Hassan
http://cern.ch/ahmadh/portfolio

Erasmus Student
The University of Reading, UK
Aristotle University of Thessaloniki, Greece
The University Of Carlos III, Madrid Spain



2010/1/29 박은병 <peb1611@gmail.com>

> I already have strictly adhered to xenoprof_tutorial.
>
> I also tried to apply xen-4.0.0-rc3-pre unstable version. but it is also
> does not work with same error message.
>
> I want to know your active domain profiling environment, including xen
> version, dom0, domU and linux distribution.
>
>
> 2010년 1월 28일 오후 3:50, Santos, Jose Renato G <joserenato.santos@hp.com>님의
> 말:
>
>  This is the only recent fix I am aware of
>>  Active mode profiling requires carefull synchronization between dom0 and
>> the guest domain
>> Make sure you follow the instructions described in:
>> http://www.xen.org/files/summit_3/xenoprof_tutorial.pdf
>>
>> Renato
>>
>>  ------------------------------
>>  *From:* 박은병 [mailto:peb1611@gmail.com]
>> *Sent:* Wednesday, January 27, 2010 7:39 PM
>>
>> *To:* Santos, Jose Renato G
>> *Cc:* xen-devel@lists.xensource.com
>> *Subject:* Re: [Xen-devel] Is it possible that xenoprof active domain
>> profiling using pvops jeremy's kernel
>>
>>   Thanks. I am sorry for late response.
>>
>> the patch you have mentioned is already applied.
>>
>> Hum....But, I have not tried to Xen 4.0 or unstable.
>>
>> Is there any other difference between the patch and 4.0 or unstable about
>> xenoprof.c ??
>>
>> 2010년 1월 24일 오전 10:01, Santos, Jose Renato G <joserenato.santos@hp.com>님의
>> 말:
>>
>>>  This seems to be related to a recently fixed bug.
>>> Try using Xen 4.0 or latest unstable or apply the patch posted in:
>>> http://lists.xensource.com/archives/html/xen-devel/2009-12/msg00709.html
>>>
>>> Renato
>>>
>>>  ------------------------------
>>> *From:* 박은병 [mailto:peb1611@gmail.com]
>>> *Sent:* Saturday, January 23, 2010 12:33 AM
>>> *To:* Santos, Jose Renato G
>>> *Cc:* xen-devel@lists.xensource.com
>>> *Subject:* Re: [Xen-devel] Is it possible that xenoprof active domain
>>> profiling using pvops jeremy's kernel
>>>
>>>   I tried to use same pvops kernel(jeremy's) for both dom0 and domU, and
>>> dullor's patch.
>>>
>>> But, it does not work well.
>>>
>>> dom0# opcontrol --start-daemon --event=L2_RQSTS:100000
>>> --xen=/boot/xen-syms-3.4.2 --vmlinux=/boot/vmlinux-2.6.31.6-xen-xenoprof
>>> --active-domains=1
>>> Using 2.6+ OProfile kernel interface.
>>> Reading module info.
>>> Using log file /var/lib/oprofile/samples/oprofiled.log
>>> Daemon started.
>>>
>>> dom0 seems to be good. I think,,
>>>
>>> and domU command
>>>
>>> domU# opcontrol --start --event=L2_RQSTS:100000
>>> --xen=/boot/xen-syms-3.4.2 --vmlinux=/boot/vmlinux-2.6.31.6-domU-xenoprof
>>> /usr/local/bin/opcontrol: line 367: timer: command not found
>>> You cannot specify any performance counter events
>>> because OProfile is in timer mode.
>>>
>>> And. Some tricky output..
>>>
>>> dom0#>cat /dev/oprofile/cpu_type
>>> i386/core
>>>
>>>  domU#>cat /dev/oprofile/cpu_type
>>> timer
>>>
>>> I would appreciate your response....:)
>>>
>>>
>>>
>>>
>>> 2010년 1월 23일 오전 3:32, Santos, Jose Renato G <joserenato.santos@hp.com>님의
>>> 말:
>>>
>>>>  To run xenoprof in active mode you need xenoprof support both in dom0
>>>> and in domU. Try using the the pvops kernel with Dullor's xenoprof patch in
>>>> domU too. This should solve your problem...
>>>>
>>>> Renato
>>>>
>>>>  ------------------------------
>>>> *From:* xen-devel-bounces@lists.xensource.com [mailto:
>>>> xen-devel-bounces@lists.xensource.com] *On Behalf Of *???
>>>> *Sent:* Thursday, January 21, 2010 10:00 PM
>>>> *To:* xen-devel@lists.xensource.com
>>>> *Subject:* [Xen-devel] Is it possible that xenoprof active domain
>>>> profiling using pvops jeremy's kernel
>>>>
>>>>   my system configuration
>>>>
>>>> xen 3.4.2, oprofile 0.9.5( xenoprof patched ), dom0( jeremy's pvops
>>>> kernel 2.6.31.6 - patched dullor's xenoprof patch ), domU( vanilla kernel
>>>> 2.6.32 with paravirt enabled ), distribution( ubuntu 9.10 )
>>>>
>>>> In passive mode, xenoprof seems to work well, opreport showed good
>>>> information.
>>>> but, in active mode, it seems not to be done correctly.
>>>>
>>>> my command is strictly followed by xenoprof tutorial doc.
>>>>
>>>> <dom0>
>>>> opcontrol --start-daemon --event=L2_RQSTS:100000
>>>> --xen=/boot/xen-syms-3.4.2 --vmlinux=/boot/vmlinux-2.6.31.6-xen-xenoprof
>>>> --active-domains=7
>>>>
>>>> <domU>
>>>> opcontrol --start --event=L2_RQSTS:100000 --xen=/boot/xen-syms-3.4.2
>>>> --vmlinux=/boot/vmlinux-2.6.32-domU
>>>> In domU, opcontrol was break showing "cannot find timer command??"
>>>>
>>>> I think that domU kernel also should be patched. Is it right?? dullor's
>>>> patch available on vanilla kernel?? I had tried to patch the dullor's patch
>>>> to vanilla kernel 2.6.31.6 with 2 conflict message.(mmu.c, xen-ops.h)
>>>>
>>>> is there anyone who succeed in running xenoprof in active mode using
>>>> jeremy's pvops 2.6.31.6 dom0 ??
>>>>
>>>>
>>>>
>>>>
>>>
>>
>
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