netdev - Re: [PATCH v4 0/10] bql: Byte Queue Limits

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Message-ID: <1322552733.2970.78.camel@edumazet-laptop>
Date:	Tue, 29 Nov 2011 08:45:33 +0100
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	John Fastabend <john.r.fastabend@...el.com>
Cc:	Dave Taht <dave.taht@...il.com>, Tom Herbert <therbert@...gle.com>,
	"davem@...emloft.net" <davem@...emloft.net>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: Re: [PATCH v4 0/10] bql: Byte Queue Limits

Le lundi 28 novembre 2011 à 23:23 -0800, John Fastabend a écrit :

> I wonder if we should consider enabling TSO/GSO per queue or per traffic
> class on devices that support this. At least in devices that support
> multiple traffic classes it seems to be a common usage case to put bulk
> storage traffic (iSCSI) on a traffic class and low latency traffic on a
> separate traffic class, VoIP for example.
> 

It all depends on how device itself is doing its mux from queues to
ethernet wire. If queue 0 starts transmit of one 64KB 'super packet',
will queue 1 be able to insert a litle frame between the frames of queue
0 ?




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