[ofa-general] IB performance stats (revisited)

[Peter Kjellstrom]

On Wednesday 11 July 2007, Mark Seger wrote:
> I don't know if what I've been proposing requires any rearchitecting as
> I see is as something local to each node.  Specificially, and there is
> already an implementation of this in an earlier voltaire stack, is to
> export wrapping HCA counters to /proc.  The module that does this
> read/clears the counters on every access but since no local applications
> are accessing the counters directly, clearing them doesn't hurt anyone.  
> Alas, anyone else who wants to query the counters will find them reset.
>
> The other side benefit of exporting these counters is such a way is now
> lots of others can collect/report this info.  In other words is someone
> chose to add IB stats to sar, it would become very easy to do!

I for one would be very happy to have this option. To be able to get simple 
but real-time data on a specific node. I'm amazed that the counters are 
non-wrapping or even that they are 32-bit...

/Peter

> If this is the type of thing people are interested in, I might be able
> to supply some code to do it.
-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 189 bytes
Desc: This is a digitally signed message part.
URL: <http://lists.openfabrics.org/pipermail/general/attachments/20070711/6f3eda75/attachment.sig>