[ofa-general] Re: [PATCH 00/10] Implement batching skb API

[Krishna Kumar2]

Hi Evgeniy,

Evgeniy Polyakov <johnpol at 2ka.mipt.ru> wrote on 07/20/2007 06:24:23 PM:

> > After fine-tuning qdisc and other changes, I modified IPoIB to use this
API,
> > and now get good gains. Summary for TCP & No Delay: 1 process improves
for
> > all cases from 1.4% to 49.5%; 4 process has almost identical
improvements
> > from -1.7% to 59.1%; 16 process case also improves in the range of
-1.2% to
> > 33.4%; while 64 process doesn't have much improvement (-3.3% to 12.4%).
UDP
> > was tested with 1 process netperf with small increase in BW but big
> > improvement in Service Demand. Netperf latency tests show small drop in
> > transaction rate (results in separate attachment).
>
> What about round-robin tcp time and latency test? In theory such batching
> mode should not change that timings, but practice can show new aspects.
> I will review code later this week (likely tomorrow) and if there will
> be some issues return back.

I had run RR test quite some time back and don't have the result at this
time,
other than remembering it was almost the same as the original. As I am
running
some tests on those systems at this time, I can send the results of RR
tomorrow.

Thanks,

- KK