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Date:      Mon, 6 Sep 2004 09:32:06 +0000 (UTC)
From:      "Bjoern A. Zeeb" <bzeeb-lists@lists.zabbadoz.net>
To:        Scott Long <scottl@samsco.org>
Cc:        freebsd-arch@freebsd.org
Subject:   Re: netgraph locking / performance [was: ... AOE]
Message-ID:  <Pine.BSF.4.53.0409060922420.10056@e0-0.zab2.int.zabbadoz.net>
In-Reply-To: <4135118A.5030807@samsco.org>
References:  <Pine.LNX.4.60.0408311611550.7530@athena> <4134DF35.7070605@freebsd.org><4134E4B6.2030409@elischer.org> <4134FCAE.7374599A@freebsd.org> <4134FF74.4010105@freebsd.org> <4135051E.2070007@elischer.org> <4135118A.5030807@samsco.org>

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On Tue, 31 Aug 2004, Scott Long wrote:

Hi,

> My employer has done extensive profiling of packet delivery through
> netgraph.  While the locking of the netgraph framework is definitely
> correct, it's not terribly efficient and leads to a good deal of
> latency.  We are looking at various proposals on how to address this.
> This isn't a criticism of you or Netgraph, just a set 'real-life'
> observations under very high load (bridging and packet inspection on
> 4 GigE links simultaneously qualifies as high load =-)

could please explain a bit more / give some numbers ? Or are there
any published results ? What do you mean by 'packet inspection' ?

And what hardware did you use to fill up 4GigE pipes ?

-- 
Greetings
Bjoern A. Zeeb				bzeeb at Zabbadoz dot NeT



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