netdev - Re: [PATCH 0/3] net: Byte queue limit patch series

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Message-ID: <1303798661.2747.209.camel@edumazet-laptop>
Date:	Tue, 26 Apr 2011 08:17:41 +0200
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Bill Fink <billfink@...dspring.com>
Cc:	Tom Herbert <therbert@...gle.com>, davem@...emloft.net,
	netdev@...r.kernel.org
Subject: Re: [PATCH 0/3] net: Byte queue limit patch series

Le mardi 26 avril 2011 à 01:56 -0400, Bill Fink a écrit :

> I don't quite follow your conclusion from your data.
> While there was a sweet spot for the 1400 rr size, other
> smaller rr took a hit.  Now all the tps changes were
> within 1 %, so perhaps that isn't considered significant
> (I'm not qualified to make that call).  But if that's
> the case, then the effective latency change seen by the
> user isn't significant either, although the amount of
> queuing in the NIC is admittedly significantly reduced
> for a rr size of 1400 or larger.

Tom point was to show that we can reduce latency (because size of
netdevice queue is smaller) without changing tps ;)



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