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<p><tt>Roland Dreier <rdreier@cisco.com> wrote on 10/19/2006 07:39:25 PM:<br>
<br>
> > I have applied this patch and updated patch 2/2. You will send out an<br>
> > updated patch 2/2, I think.<br>
> <br>
> Sorry, messed that up. I just sent out the patch.<br>
No problem, I did same change.</tt><br>
<tt><br>
> You mean you add more calls to ib_poll_cq()? Where do you add them?<br>
> Why does it help?<br>
> <br>
> - R.<br>
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?</tt><br>
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Thanks<br>
Shirley Ma<br>
IBM Linux Technology Center</body></html>