[ofw] Adding Performance Counters support for WinOF

[Moshe Haim]

I further discussed it with my manager who worked with the Linux version
and I was told that on Linux there was a problem with perfquery since it
was neither thread nor process safe - i.e. calling it concurrently from
2 or more threads/processes would crash.
In addition, I can only assume perfquery is an executable.

The application I'm working on is performance oriented and in the load
balance mechanism we check every interval the performance information.
In case of an executable it would be very heavy to launch it each time
in order to get that information.

I also assume that perfquery uses one of the more "lower levels" dlls
mentioned below in order to get the performance counter information
(libibumad?).

To be more concrete, if I'd want to directly access the counter
information I'll simply need to link my project against that DLL and
call an API method - is that assumption correct?

Thanks,
Moshe.

-----Original Message-----
From: Sean Hefty [mailto:sean.hefty at intel.com] 
Sent: Thursday, January 15, 2009 9:49 AM
To: Hefty, Sean; Moshe Haim; ofw at lists.openfabrics.org
Subject: RE: [ofw] Adding Performance Counters support for WinOF

>The diag that I think you're wanting ported is perfquery, which is not
yet
>done.  (Most of the porting deals with compiler differences.)  If you
have
>access to the Linux ib diags you could look at the ib-diags that are
available
>and let us know if one of them would meet your needs.

I was wrong.  Perfquery was ported already.  I committed the ported
infiniband-diags to SVN.  Additional changes to the code are possible as
we work
on merging the changes back into the main IB management git tree.  The
plan is
to have SVN mirror the source code, plus include the relevant build
files.

To run perfquery, you need the following installed:

kernel drivers: mlx4 or mthca, IBBus, WinVerbs, and WinMad
libraries: winmad, winverbs, libibverbs, libibumad, libibmad

These will be automatically installed in the next WinOF release.

- Sean