Thanks Stephane and Anoop !
I have linux kernel 2.6.23.9 patched with perfmon2 and I am using
libpfm-3.4... I hope that is fine, will let you know if I face some issues.
Regards,
Vivek
On Mon, May 5, 2008 at 1:28 PM, stephane eranian <[EMAIL PROTECTED]>
wrote:
> Vivek,
>
> There is IBS support in perfmon since 2.6.24. If you download the
> latest libpfm, you
> will find an example (examples/x86) showing how to get access to it
> using the perfmon
> interface.
>
> If you pull libpfm from CVS, there is a man page (man libpfm_amd64)
> that describes
> the IBS support for libpfm,
>
> If you need more information, post on this list.
>
> On Mon, May 5, 2008 at 6:53 PM, Iyer, Anoop <[EMAIL PROTECTED]> wrote:
> >
> >
> >
> >
> > Vivek,
> >
> >
> >
> > Lightweight profiling is a proposal that will be implemented in future
> > hardware. Current silicon support IBS only. IBS is documented in the
> BIOS
> > and Kernel Developers Guide (Section 2.17, Performance Monitoring) as
> well
> > as in the Software Optimization Guide (Appendix G, Guide to IBS). Both
> these
> > documents are available online:
> >
> >
> >
> > http://developer.amd.com/documentation/guides/Pages/default.aspx
> >
> >
> >
> > If you have specific IBS-related questions that are not addressed in the
> > BKDG & SWOG, send them my way. Regarding the best perfmon2/libpfm
> versions
> > for IBS, I am not the right person to ask. Robert / Stephane?
> >
> >
> >
> > Anoop
> >
> >
> >
> >
> >
> >
> > From: [EMAIL PROTECTED]
> > [mailto:[EMAIL PROTECTED] On Behalf Of Vivek
> > Thakkar
> > Sent: Sunday, May 04, 2008 8:35 PM
> > To: [email protected]
> > Subject: [perfmon2] AMD Barcelona IBS
> >
> >
> >
> >
> >
> > Hi,
> >
> > I need to program IBS in Barcelona processors. The event I am looking
> for
> > is L2 load cache miss and I need the data addresses for such loads.
> > Can someone point me to some relevant documentation ?
> >
> > I have a link regarding LWP profiling support of AMD but I guess it is
> not
> > yet out. Here is the link :
> >
> >
> http://developer.amd.com/assets/HardwareExtensionsforLightweightProfilingPublic20070720.pdf
> >
> >
> >
> > Is it significantly different from the current IBS support ?
> >
> > Also, I have 2.6.23 kernel patched with perfmon. Which libpfm should I
> use
> > ? libpfm-3.3 has a sample example for IBS but I am not sure if this is
> the
> > best library with the kernel that i have. Please guide.
> >
> > Sincerely,
> > Vivek Thakkar
> > Graduate Student and Research Assistant
> > CSC Department, NC State University
> >
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> >
>
--
Vivek Thakkar
Graduate Student and Research Assistant
CSC Department, NC State University
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