linux-kernel - Re: loaded router, excessive getnstimeofday in oprofile

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Message-Id: <20080828.134701.116492932.davem@davemloft.net>
Date:	Thu, 28 Aug 2008 13:47:01 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	rick.jones2@...com
Cc:	jmalicki@...acarta.com, andi@...stfloor.org, johnpol@....mipt.ru,
	dada1@...mosbay.com, denys@...p.net.lb, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org, juhlenko@...mai.com, sammy@...my.net
Subject: Re: loaded router, excessive getnstimeofday in oprofile

From: Rick Jones <rick.jones2@...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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