netdev - Re: [net-next PATCH V5] qdisc: bulk dequeue support for qdiscs with TCQ_F

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Date:	Wed, 01 Oct 2014 15:47:20 -0400 (EDT)
From:	David Miller <davem@...emloft.net>
To:	brouer@...hat.com
Cc:	jhs@...atatu.com, therbert@...gle.com, netdev@...r.kernel.org,
	eric.dumazet@...il.com, hannes@...essinduktion.org, fw@...len.de,
	dborkman@...hat.com, alexander.duyck@...il.com,
	john.r.fastabend@...el.com, dave.taht@...il.com, toke@...e.dk
Subject: Re: [net-next PATCH V5] qdisc: bulk dequeue support for qdiscs
 with TCQ_F_ONETXQUEUE

From: Jesper Dangaard Brouer <brouer@...hat.com>
Date: Wed, 1 Oct 2014 19:28:40 +0200

> Thus, code is activated only when q->qlen is >= 1. And I have already
> shown that we see a win with just bulking 2 packets:
>  "Subject: qdisc/UDP_STREAM: measuring effect of qdisc bulk dequeue"
>  http://thread.gmane.org/gmane.linux.network/331152/focus=331154
> 
> I actually believe, that I have already measured and shown that going
> though the bulk dequeue is a win, this should show direct_xmit vs.
> bulking:
>  "Subject: qdisc/trafgen: Measuring effect of qdisc bulk dequeue, with trafgen"
>  http://thread.gmane.org/gmane.linux.network/331152

+1 Amen...
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