Hello,
could you please confirm that you received my previous email and that I
posted to the correct thread?
Thank you,
Roman
On 03/08/2011 03:10 PM, Roman Iakymchuk wrote:> Hello,
>
> to monitor performance of applications on our private clouds I decided
> to use Xenoprof. I installed patched OProfile 0.9.5 on Dom0 and DomU.
> I was able to monitor CPU_CLK_UNHALTED, stopped monitoring as it is
> recommended in the attached guide. And, I generated report by
> opreport. Then, I wanted to monitor another event, so I followed the
> procedure, but I stuck starting opcontrol on DomU, please see the
> error below:
>
> Using 2.6+ OProfile kernel interface.
> Failed to open OProfile device: Device or resource busy
> Couldn''t start oprofiled.
> Check the log file "/var/lib/oprofile/oprofiled.log" and kernel
syslog
>
> Could you please help me to solve the problem? Maybe I stopped
> profiling system in the wrong way?
>
> Configuration of the clouds:
> 1. Hardware: CPU: Xeon X5530(2.4GHz, 8MB) X 2;
> 2. Operating System: CentOS 5.4 x86_64;
> 4. Kernel: 2.6.18-164.el5xen;
> 5. Xen: xen-3.03.-94.el5.
>
> Thank you,
> Roman Iakymchuk
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