Date: Thu, 21 Sep 2006 08:21:10 -0700 (PDT) From: backyard <backyard1454-bsd@yahoo.com> To: RW <list-freebsd-2004@morbius.sent.com>, freebsd-questions@freebsd.org Subject: Re: How "real time" is FreeBSD? Message-ID: <20060921152110.31431.qmail@web83109.mail.mud.yahoo.com> In-Reply-To: <200609211511.10829.list-freebsd-2004@morbius.sent.com>
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--- RW <list-freebsd-2004@morbius.sent.com> wrote: > On Thursday 21 September 2006 06:12, Walt Pawley > wrote: > > At 11:47 PM -0500 9/20/06, W. D. wrote: > > >Just reading this about Linux on ZDNet and was > wondering: > > > ><http://news.zdnet.com/2100-9593_22-6117479.html?part=rss&tag=feed&subj=zd > > >nn> > > > > Cybernetic floobydust, IMHO. > > If you read what the banker says: " for each > thousandth of a second that its > trading software can act faster than competitors' > software, the company would > see $100 million a year in new revenue." > and for every extra trade they do they change the stock price faster and faster making them more money. They're creating the money by manipulating the market faster; the market doesn't create itself... How can they even quantify this so called loss when their trading is constantly changing the state of the market. > It seems to me that they are really misunderstanding > the problem. What they > need is a system that's fast most of the time, > rather than one that meets an > arbitary deadline all the time. In other words they > need a fast system, not a > realtime system. > I would imagine an extra 100 million would buy quite a dusy of a system at that... processing data at a rate of 1000 Hz doesn't seem to suggest a real-time system is required when the average clock is 1 million times faster then that. its not like they're doing FFT's on a Radar signal, to determine if its a bogey and arming the appropriate countermeasures so they can be deployed the second the blip appears on the operators screen. -brian
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