Messages in this thread | | | Date | Sun, 12 Jan 2003 01:16:54 -0500 | From | Mark Mielke <> | Subject | Re: Nvidia and its choice to read the GPL "differently" |
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On Sat, Jan 11, 2003 at 08:19:32PM -0800, David Schwartz wrote: > On Sat, 11 Jan 2003 22:33:25 -0500, Mark Mielke wrote: > > Why do I doubt the calibre of vxWorks? People I trust who work on > > RT systems have told me that in many cases, products with RT > > requirements can perform better on Linux, than on vxWorks. (Better > > meaning managing a higher capacity without significant side > > effects) > This is an atrocious way to compare a real-time operating system to > a non-real-time operating system. One would expect that real-time's > benefits also come at a cost, otherwise all operating systems would > be real-time operating systems.
Atrocious how? My qualification "without significant side effects" means just that - *without* *significant* *side* *effects*. Note that I did not say web clients, but that below you assume web clients. I don't know about you, but I don't consider a web server to be an RT application.
> Perhaps Linux can handle more web clients than vxWorks, but can > Linux guarantee that if the temperature in the core coolant exceeds > 350 degrees, the secondary pump circuit will be activated within 13 > milliseconds?
If you truly wanted to fit the requirements you list above (350 degress, secondary pump activated in < 13 milliseconds), I suggest you use a hardware solution.
I remain very optimistic that Linux+RT will be able to handle more capacity than vxWorks for the majority of RT applications.
> A cheap hammer can drive in more nails than a top of the line > screwdriver.
Any brand name hammer that is aggressively marketted, costs more to produce per hammer, than its competitors that may produce just as good of a hammer, without all the marketting costs.
But... this has gone too far off a dead thread. You obviously like vxWorks. Quite a few people I socialize with curse vxWorks. That's your freedom and their freedom. I don't want to be part of this anymore. :-) (Private query: What does webmaster.com use vxWorks for?)
mark
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