netdev - Re: Scalability of interface creation and deletion

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Date:	Sun, 08 May 2011 14:14:35 +0100
From:	Alex Bligh <alex@...x.org.uk>
To:	Alex Bligh <alex@...x.org.uk>, paulmck@...ux.vnet.ibm.com
cc:	Eric Dumazet <eric.dumazet@...il.com>, netdev@...r.kernel.org,
	Alex Bligh <alex@...x.org.uk>
Subject: Re: Scalability of interface creation and deletion



--On 8 May 2011 14:06:07 +0100 Alex Bligh <alex@...x.org.uk> wrote:

> Add to that the fact that there are 2 x synchronize_sched() and one
> rcu_barrier() per interface removal. If I ignore your IRQ idea, that's
> 6 x 3 = 18ms per interface removal at CONFIG_HZ=10, 180ms at
> CONFIG_HZ=100.

Aargh I mean:

6 x 3 = 18ms per interface removal at CONFIG_HZ=1000, 180ms at
CONFIG_HZ=100.


-- 
Alex Bligh
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