Re: Accessing CPU performance counters from user space

On Thu, Jun 25, 2009 at 4:28 PM, sandeep lahane wrote:
> Hi All,
>
> Is it possible to access cpu performance counters from user space?
> AFAIK, it is not possible.
> I am aware of various attempts like perfmon and perfctr patch set.
> Looks like a kernel module is
> mandatory to access these registers. My objective is to measure
> various parameters like number
> instructions retired, number of cache misses, number of brach mis
> predictions etc.
>
> I know of an alternative way to count the number of instructions by
> using ptrace but I think this approach
> is very slow.
>
> Regards,
> Sandeep.
>

I meant Perfsuite and perfctr, not perfmon.
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