[ofa-general] Re: performance drop for datagram mode with the new connectx FW

[Or Gerlitz]

Eli Cohen wrote:
> I was just able to verify that the above suggestion is required, at least on my systems (SLES 10). This is of course valid for changing to CM mode too.
Eli, just to summarize, the above is fair-enough for the problem you 
saw, but I see something else:
> mode		mtu	size	bw	note
> ====================================================
> datagram	2044	64000	30 <---------- problem
> datagram	2044	2000	430
> datagram	2044	2000	300	TCP_NODELAY
> -----------------------------------------------------
on the same settings, the datagram mode bw changes from 30 MB/s to 
430MB/s depending on the message size used by netperf, so its a 
different issue.

Or.