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Date: Fri, 1 Nov 2002 21:33:25 -0300
From: Werner Almesberger <wa@almesberger.net>
To: Ed Vance <EdV@macrolink.com>
Cc: "'Richard B. Johnson'" <root@chaos.analogic.com>,
       Ken Ryan <newsryan@leesburg-geeks.org>,
       Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: [STATUS 2.5] October 30, 2002
Message-ID: <20021101213324.H2599@almesberger.net>
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Ed Vance wrote:
> functional as long as he can keep up. For the memory, the many separate bit
> error events would cause only correctable errors, as long as the scrubbing
> can keep up.

Don't those bit errors have a Poissonian character ? If so, it's
impossible to "keep up". All you can do is make the interval small
enough that, on average, it takes a long time until you get hit
twice (or more often) in that interval.

A better example would be car tires on roads with many randomly
distributed sharp objects (i.e. such that age does not significantly
change the odds of tire damage): you can keep going as long as you
can get a flat tire fixed before another tire gets punctured. But
sometimes, you may end up with two flat tires, and need a tow truck.

- Werner

-- 
  _________________________________________________________________________
 / Werner Almesberger, Buenos Aires, Argentina         wa@almesberger.net /
/_http://www.almesberger.net/____________________________________________/
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