Re: [perfmon2] collecting PEBS event using perf_event

[stephane e. <er...@go...>]

Hi,

On Sun, Aug 22, 2010 at 6:02 PM, Besar Wicaksono
<bes...@gm...> wrote:
> Hello all,
>
> I need to collect performance data about long latency load on my Intel
> nehalem machine.
>
> As my understanding, I should use PEBS to do this in order to get the data
> address.
>
> Currently, I can only use perf_event on my machine, because I have kernel
> 2.6.34 installed in my machine.
>
> Is there any examples or guide on how to program the performance counter to
> collect PEBS event using perf_event ?
>

There is preliminary support for PEBS on perf_events in 2.6.35. However, it does
not allow you to capture load miss addresses.

> The reason why I can only use perf_event for now is that the installation of
> perfmon2 kernel was always failed.
>
Grab from the git tree on kernel.org.

> The sysadmin in my school try to install kernel linux-2.6.18-perfmon2, but
> he said the boot up was failed.
>
That's too old.

> He has not tried the perfmon2 2.6.30 though.
>
Yes, use that one. Pull it from the git tree.

git clone git://git.kernel.org/pub/scm/linux/kernel/git/eranian/linux-2.6.git