Re: [BUG] perf sched broken

Corey Ashford
2011-01-12T20:22:45Z

On 01/12/2011 11:52 AM, Stephane Eranian wrote:
> On Wed, Jan 12, 2011 at 8:41 PM, Corey Ashford
> <cjashfor@linux.vnet.ibm.com> wrote:
>> On 01/12/2011 01:29 AM, Stephane Eranian wrote:
>>>
>>> Hi,
>>>
>>> I am trying to use perf sched from tip-x86 but it fails for all my
>>> attempts.
>>
>> So far I have been unsuccessful in reproducing this problem, but I suspect
>> that I have the wrong git tree or branch. The git tree I've cloned is:
>>
>> git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip.git
>>
> I was using this branch.
> I also tried running the tool on ubuntu lucid (2.6.32-based).
>
> Didn't you have to at least fixup the sched event names to drop :r?
> Once you have the perf.data file, how do you dump it?
>
> I tried:
> - perf sched trace -> error
> - perf sched replay -> error
> - perf script sched-migration -> hangs
> - perf report -D
>
>> I've tried the branches master, x86/urgent, and x86-urgent-for-linus. All of
>> those produce correct results, as far as I can tell.
>>
>> Which tree / branch should I be using?
>>
>> - Corey
>>

I made a stupid mistake! When I ran perf, it was picking up the
executable from /usr/bin instead of the kernel build tree.

I am seeing the problem you are reporting now.

Thanks for your patience,

- Corey