Re: [Patch infiniband-diags:perfquery] Loop through all local HCAs/ports

[Doug Ledford <dledford-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>]

On 07/29/2011 06:09 PM, Jason Gunthorpe wrote:
> On Fri, Jul 29, 2011 at 05:57:57PM -0400, Doug Ledford wrote:
>> The -a mode of perfquery is intended to loop through all ports on a
>> single HCA and provide aggregated output across all ports.
>>
>> The -l mode is intended to loop through all ports of a single HCA
>> and output non-aggregated data.
>
> Actually, none of these modes are intended to support HCA scenarios,
> they are all only for switches.

Well, they attempt to work on local HCAs if you don't specify a switch 
lid to query.  So, intended or not, they are already being attempted to 
be used in this fashion out in the field.

> Not sure what I think of this, is dumping counters on all local HCA
> ports really that interesting? Would this be better done by doing
> something fancy with nodeGUID so at least all ports on remote HCAs can
> be dumped too?

The request came in from one of our partners who wanted it for tracking 
performance stats specifically on the local machine.

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