[ofw] [PATCH] Make WSD use new IBAT library

[Fab Tillier]

Hi Tzachi,

> From: Tzachi Dar [mailto:tzachid at mellanox.co.il]
> Sent: Thursday, July 03, 2008 8:07 AM
>
> I must say that I agree that we should change this pooling behavior.
>
> Looking at the WSD code, I can see that if looking at the tables once
> wasn't enough this means that I have to sleep for 100 ms which means no
> more than 10 connections in a second.

The current code does a synchronous query to the SA.  The retry count is 250ms, and with 4 retries.  This means that a connection could block the connecting thread for 1 second before failing.

In my testing the connection rate before and after the IBAT change is the same for small clusters, and much improved in larger clusters.

-Fab