netdev - Re: [PATCH net-next-2.6] macvlan: remove one synchronize

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Date:	Fri, 20 May 2011 06:28:05 +0200
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Ben Greear <greearb@...delatech.com>
Cc:	David Miller <davem@...emloft.net>,
	Patrick McHardy <kaber@...sh.net>,
	netdev <netdev@...r.kernel.org>
Subject: Re: [PATCH net-next-2.6] macvlan: remove one synchronize_rcu() call

Le jeudi 19 mai 2011 à 17:18 -0700, Ben Greear a écrit :

> I applied this to today's wireless-testing kernel.  There is a consistent
> speedup in deleting mac-vlans!  I wouldn't read much into changes in
> creating macvlans or adding IPs..those numbers just jump around a bit
> from run to run.
> 
> Before the patch:
> Deleted 500 macvlan in 25.424282 seconds. (0.050848564 per interface)
> 
> 
> After the patch:
> 
> Deleted 500 macvlan in 21.831413 seconds. (0.043662826 per interface)
> 

Thanks for testing !

My ultimate goal would be to reduce vlan/macvlan delete latency from 50
ms to less than 5 ms. Step by step...

(But this will wait after this merge window, since next changes are a
bit more complex)

Stay tuned ;)



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