netdev - Re: [PATCH net-next] pktgen: Add NOINIT option to leave packet data uninitialized

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Message-ID: <1400253971.7973.186.camel@edumazet-glaptop2.roam.corp.google.com>
Date:	Fri, 16 May 2014 08:26:11 -0700
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Thomas Graf <tgraf@...g.ch>
Cc:	Ben Greear <greearb@...delatech.com>, davem@...emloft.net,
	netdev@...r.kernel.org
Subject: Re: [PATCH net-next] pktgen: Add NOINIT option to leave packet data
 uninitialized

On Fri, 2014-05-16 at 16:20 +0100, Thomas Graf wrote:

> I'm aware of the work and I agree. That is perfectly fine if the
> produced skbs do not get enqueued and modified. Otherwise the clone
> and COW will undo the gain again. I need pktgen to produce large,
> linear skbs with a unique flow for each individual packet. Hence this
> optimization ;-)

pktgen is a tool for us kernel net developers.

I doubt more than 20 people on this planet used it in the last 12
months, expecting crazy numbers out of one core, while a simple user
space program can outperform pktgen these days.

So if you need a very specific hack, you can do it on your local tree ;)


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