Date: Thu, 28 Aug 2008 13:47:01 -0700 (PDT)
Message-Id: <20080828.134701.116492932.davem@davemloft.net>
To: rick.jones2@hp.com
Cc: jmalicki@metacarta.com, andi@firstfloor.org, johnpol@2ka.mipt.ru,
       dada1@cosmosbay.com, denys@visp.net.lb, netdev@vger.kernel.org,
       linux-kernel@vger.kernel.org, juhlenko@akamai.com, sammy@sammy.net
Subject: Re: loaded router, excessive getnstimeofday in oprofile
From: David Miller <davem@davemloft.net>
In-Reply-To: <48B70E74.2000800@hp.com>
References: <48B70AAA.7010504@hp.com>
	<20080828.133223.119110675.davem@davemloft.net>
	<48B70E74.2000800@hp.com>
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From: Rick Jones <rick.jones2@hp.com>
Date: Thu, 28 Aug 2008 13:45:40 -0700

> Given that there are no guarantees that a packet arriving on NIC 1
> and timestamped either by the NIC HW or the driver will actually hit
> the application before a packet arriving on NIC2, just how long are
> these financial services applications going to wait around before
> executing the trade carried in the packet arriving on NIC1?

I have no idea.

They also care about trade processing latency btw.
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