[ofa-general] socket buffer accounting with UDP/ipoib

[Eli Cohen]

I just got from vacation  and started working on a version that does the
same for bot UD ans CM modes. I will send a distinct patch for CM later
this week.

-----Original Message-----
From: Roland Dreier [mailto:rdreier at cisco.com] 
Sent: Tuesday, July 17, 2007 8:42 PM
To: Eli Cohen
Cc: general at lists.openfabrics.org
Subject: Re: [ofa-general] socket buffer accounting with UDP/ipoib

I did a quick hack to enable copybreak for UD packets up to 256 bytes
(see below).  This is still missing copybreak for CM / RC mode.
However I just wanted to see how it affected performance.  And the
answer is that on my system (fast quad-core Xeon, 1-port Mellanox PCIe
HCA) is that it didn't make any difference in small-message latency or
throughput, at least none that I could measure with netpipe (NPtcp).