Roland Dreier <[EMAIL PROTECTED]> wrote on 10/19/2006 07:39:25 PM:
> > I have applied this patch and updated patch 2/2. You will send out an
> > updated patch 2/2, I think.
>
> Sorry, messed that up. I just sent out the patch.
No problem, I did same change.
> You mean you add more calls to ib_poll_cq()? Where do you add them?
> Why does it help?
>
> - R.
I run out of ideas why losing 2/3 of the throughput and got 476 trans/s. So I assumed there was always a missed event, then ipoib would stay in its napi poll within its scheduled time. That's why it helps. This is really a hack, doesn't address the problem. It sacrificed cpu utilization and gained the performance back. I need to understand how ehca reports missing event, there might be some delay there?
Thanks
Shirley Ma
IBM Linux Technology Center
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