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

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Message-Id: <20080828.133223.119110675.davem@davemloft.net>
Date:	Thu, 28 Aug 2008 13:32:23 -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 13:29:30 -0700

> Has the request "hit the trading system" when it hits the NIC, or
> when it hits the application executing the trade?  If the SEC calls
> for when it hits the NIC, then none of what is done today is really
> accurate/correct and one would need to start using NIC HW
> timestamps, synchronized with the host and the other NICs in the
> system no?

The SEC isn't mandating anything here, stop framing it that way :-)

People simply won't trade with a firm if they find out that trades
there are executed out of order.

They are simply trying to make things as fair as possible.
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