On Fri, May 13, 2011 at 7:35 AM, Rick Jones <[email protected]> wrote:
> > For a short time, servers with gigabit NICs suffered but smarter NICs > > were developed (TSO, LRO, other TLAs) and OSs upgraded to support them > > and I believe it is no longer a significant issue. > > Are TSO and LRO going to be sufficient at 40 and 100 GbE? Cores aren't > getting any faster. Only more plentiful. NICs seem to be responding by hashing incoming 5-tuples to distribute flows across cores. > And while it isn't the > strongest point in the world, one might even argue that the need to use > TSO/LRO to achieve performance hinders new transport protocol adoption - > the presence of NIC offloads for only TCP (or UDP) leaves a new > transport protocol (perhaps SCTP) at a disadvantage. True, and even UDP seems to be often blocked for anything other than DNS.
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