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Date: Fri, 09 Nov 2012 01:48:09 +0400
From: "Alexander V. Chernikov" <melifaro@FreeBSD.org>
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To: Adrian Chadd <adrian@freebsd.org>
Subject: Re: [patch] reducing arp locking
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On 08.11.2012 03:46, Adrian Chadd wrote:
> On 7 November 2012 15:24, Alexander V. Chernikov<melifaro@freebsd.org>  wrote:
>> Hello list!
>>
>> Currently we need to acquire 2 read locks to perform simple 6-byte copying
>> from arp record to packet ethernet header.
>>
>> It seems that acquiring lle lock for fast path (main traffic flow) is not
>> necessary even with current code.
>>
>> My tests shows ~10% improvement with this patch applied.
>>
>> If nobody objects I plan to commit this change at the end of next week.
>
> That's a great catch! How'd you discover it?
We have lots of FreeBSD routers doing 10G firewalling, so we're very 
much concerned with forwarding/firewalling performance, constantly 
looking for something to optimize :)
>
>
>
> Adrian
>