netdev - Re: [PATCH] ifb: add multi-queue support

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Date:	Fri, 13 Nov 2009 09:26:18 +0800
From:	Changli Gao <xiaosuo@...il.com>
To:	Eric Dumazet <eric.dumazet@...il.com>
Cc:	"David S. Miller" <davem@...emloft.net>,
	Stephen Hemminger <shemminger@...tta.com>,
	Patrick McHardy <kaber@...sh.net>,
	Tom Herbert <therbert@...gle.com>, netdev@...r.kernel.org
Subject: Re: [PATCH] ifb: add multi-queue support

2009/11/12 Eric Dumazet <eric.dumazet@...il.com>:
>
> I believe this patch is fine, but maybe Jarek concern about workqueue
> vs tasklet should be addressed...
>
> We could use the previous handling in case numtxqs==1 , ie use a tasklet
> instead of a work queue ?

I don't think it is a good idea. If we do so, the code will be messy,
and lost the flexibility of process. In fact, latency isn't a problem
when system load isn't high, and when system load is high (due to too
many NIC IRQs), throughput and interaction is more important, and the
current linux networking subsystem just dose so through the softirqd
mechanism.

>
>
> Sorry for this late idea...
>



-- 
Regards，
Changli Gao(xiaosuo@...il.com)
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