netdev - Re: [PATCH] iptables: lock free counters

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Message-ID: <49AC5617.8020404@trash.net>
Date:	Mon, 02 Mar 2009 22:56:39 +0100
From:	Patrick McHardy <kaber@...sh.net>
To:	Eric Dumazet <dada1@...mosbay.com>
CC:	Stephen Hemminger <shemminger@...tta.com>,
	David Miller <davem@...emloft.net>,
	Rick Jones <rick.jones2@...com>, netdev@...r.kernel.org,
	netfilter-devel@...r.kernel.org,
	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
Subject: Re: [PATCH] iptables: lock free counters

Eric Dumazet wrote:
> Patrick McHardy a écrit :
>> Eric Dumazet wrote:
>>> real    0m1.810s
>>> user    0m0.000s
>>> sys     0m0.001s
>> Thats really slow ...
>>
>>> CONFIG_NO_HZ=y
>>> CONFIG_HZ_1000=y
>>> CONFIG_HZ=1000
>>>
>>> One cpu is 100% handling softirqs, could it be the problem ?
>> Is this fixed by your RCU quiescent state fix?
> 
> Yes it is :)

Great, thanks :)
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