Re: [perfmon2] Offcore PMU support on Ivy Bridge

[Bhavishya G. <bha...@gm...>]

Yes, updating to the latest kernel fixed the problem. Thanks.


On Fri, Aug 22, 2014 at 4:13 AM, Stephane Eranian <er...@go...>
wrote:

> On Thu, Aug 21, 2014 at 2:25 PM, Bhavishya Goel
> <bha...@gm...> wrote:
> > Thanks Vince. I will upgrade the kernel and try again.
> >
> I was going to ask you for your kernel version.
> you need a recent kernel. OFFCORE_RESPONE needs some kernel support which
> was either missing or broken for IvyBridge in the kernel you are using.
>
> >
> > On Thu, Aug 21, 2014 at 2:29 PM, Vince Weaver <vin...@ma...>
> > wrote:
> >>
> >> On Thu, 21 Aug 2014, Bhavishya Goel wrote:
> >>
> >> > The same command with same benchmark works fine on Nehalem and
> Haswell.
> >> > My
> >> > kernel version is a bit old (3.2.0). Can it be because of that?
> >>
> >> yes, offcore was broken in the kernel in a way that couldn't be detected
> >> for a while.  I think it wasn't fixed until 3.6.
> >>
> >> Vince
> >>
> >
> >
> >
> > --
> > ಠ_ಠ
> >
> >
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>



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