http://www-1.ibm.com/linux/news/semiconductor.shtml
IBM bets 2.9 Billion on Linux for semiconductor manufacture
June 2003
(...)
The most important requirement is 24 x 7 operation. Actually, we say "60
x 60 x 24 x 7" because the 300mm fab has to work every second, of every
minute, of every hour, of every day -- seven days a week or our vision
of "on-demand manufacturing" would not have been realized.
-----------------------------------------------
(...) Et maintenant le test en situation r�elle ...
-----------------------------------------------
So we set up three machines communicating to three pieces of equipment,
using the same tool communication application on Red Hat 7.2 Linux and
Windows NT/2000. We used the same setup for all six applications, and
then we began a planned 90 day test. The plan was to run the
applications and look at errors, performance degradation, maintenance
requirements, and any other issue that might pop up.
The results were striking. The best run we had with the Windows machines
was approximately six to seven days before we began to see noticeable
performance degradation, and in about ten days we had a service
interruption. If you multiply this failure rate times the large number
of servers we wanted to deploy, you can see that with Windows NT/2000,
it would have been a performance nightmare and could never have
supported our overall fab goals.
The Linux servers, on the other hand, ran without incident for the full
90 days. There were no performance degradations, interrupts or required
maintenance. In fact, just for fun, we kept the Linux experiment running
to see what would happen. We finally shut it off after 5 months, and it
was still running like a clock.
We now have between 250 and 300 of these Linux machines up and running,
and to date, we have not had a single software failure in over 18
months.
(...)
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Les fait r�els, cela change de la propagande, FUD & C� ;-)
Bon dimanche,
Alain
--
Alain EMPAIN <[EMAIL PROTECTED]>
University of LIEGE, Fac. Vet., Molecular Genetics
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