[ewg] RE: SDP / TCP_NODELAY

[Jim Mott]

Hi,
  SDP includes support for TCP_NODELAY and TCP_CORK.  At a high level,
these options control buffering and they seem to be working.  If you
turn off the nagle buffering algorithm using these options, then sends
go right away.  This is  how TCP_RR testing with netperf run to measure
latency.

  That is my understanding anyway.  If you have some code that does not
seem to be running right, send it along and I will take a look.  

Thanks,
JIm

Jim Mott
Mellanox Technologies Ltd.
mail: jim at mellanox.com
Phone: 512-294-5481


-----Original Message-----
From: Or Gerlitz [mailto:ogerlitz at voltaire.com] 
Sent: Wednesday, November 21, 2007 3:07 AM
To: Jim Mott
Cc: EWG
Subject: SDP / TCP_NODELAY

Hi Jim,

I was handed a benchmark results from which I suspected that the SDP 
code that was used might not respect the TCP_NODELAY option, so I wanted

to clarify this with you. I think it was OFED 1.2 based. So is it 
supported in OFED 1.2? in OFED 1.3?

thanks,

Or.