On 7/17/07, Roland Dreier <[EMAIL PROTECTED]> wrote:

> > But to be fair, it will be difficult to enable both QoS and local PR
> > caching.  To me, this would be the strongest reason against using it.
> > However, QoS places additional burden on the SA, which will make
scaling
> > even more challenging.
>
> my understanding is that the local sa does a path-query where all the
fields
> except for the SGID are wildcard-ed. This means we expect the result to
be a
> table of all the paths from this port to every other port on the fabrics
for
> every pkey which this port is a member of etc, correct?
>
> How do you plug here  the QoS concept of SID in the path query? are you
> expecting the SA to realize what are all the services for which this
port is
> a "member"? does the proposed definision for QoS management at the SA
> defines "services per gids" isn't it "what SL to user per Service"?

Or, thanks for rescuing this post.

I think this is an important question.  If we merge the local SA
stuff, then are we creating a problem for dealing with QoS?  Are we
going to have to revert the local SA stuff once the QoS stuff is
available?  Or is there at least a sketch of a plan on how to handle
this?


Is the worst case that local SA cache and QoS on an end node are mutually
exclusive ? I think there is a way to shut off the local SA cache.

-- Hal

- R.
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