power4 performance counters

Maynard Johnson mpjohn at us.ibm.com
Wed Dec 1 08:34:29 EST 2004

> Is there a publicly available document that specifies the events
> countable on power4 performance counters?  I found POWER4.evs on an AIX
> box (part of pmapi library), but I would like to write my own code that
> accesses those counters on linux, and incorporating that information
> probably violates IBM copyright.
> Thanks,
> Igor
I've been told by those responsible for the PMU documentation for PowerPC
that they are keenly aware of the need and that they will be working to fix
this problem with publicly available doc, but I wouldn't expect that it
will be very soon.

In the meantime, it may interest you to know that my team has just
completed a port of OProfile to ppc64, supporting Power4, 5, and 970.  It's
currently available at the OProfile website
(http://oprofile.sourceforge.net/news/) in their CVS (not included in their
latest release).  This will be included in RHEL 4 and (probably) SLES 9
SP1.  Additionally, we're starting work on porting PAPI
(http://icl.cs.utk.edu/papi/index.html) to ppc64.  If you still would like
access to the currently confidential PMU doc, get with me offline from this
mailing list and I can probably hook you up with the right resources.

Maynard Johnson
LTC Power Linux Toolchain

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