On Fri, 13 Apr 2007, Les wrote:
On Fri, 2007-04-13 at 17:30 -0400, Ric Moore wrote:
On Fri, 2007-04-13 at 21:03 +0300, Gilboa Davara wrote:
Oh, well, when you get something for free (gmail) you shouldn't really
expect five-9s stability.
- Gilboa
Gilboa, I'm cleaning up on this end from the gmail Katrina experience.
So far I have 1,199 messages just for Fedora List and climbing. It goes
to show, the Universe will always remain at a steady state as something
got fixed "Real Good" (tm) and now a year or so of sent messages are
showing up in my in-box. I spewed, the Universe spewed back, clear back
to 2005. BTW, What is five-9s? :) Ric
Six Sigma for reliability.
Sorta...
Five 9s is .99999 reliability.
Six sigma is six standard deviations above the mean. For a normal
probability distribution (the "bell-curve" for probability density), the
probability (area under the curve) to the left of \mu + 6 * \sigma is
about .999999999. That is, six-sigma reliability is about nine 9s.
Gve us this day our daily buzzword...
--
Matthew Saltzman
Clemson University Math Sciences
mjs AT clemson DOT edu
http://www.math.clemson.edu/~mjs
