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Date:	Fri, 20 Jul 2007 16:54:23 +0400
From:	Evgeniy Polyakov <>
To:	Krishna Kumar <>
Subject: Re: [PATCH 00/10] Implement batching skb API

Hi Krishna.

On Fri, Jul 20, 2007 at 12:01:49PM +0530, Krishna Kumar ( wrote:
> 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.

	Evgeniy Polyakov
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