On Tue, 2006-02-21 at 13:19 -0600, Jan Depner wrote:
> There's a bunch of information on that on my site (albeit outdated).
> Tuning the disk drives is a must and it *will* help but there are
> instances where the disk drive is busy and you can't get to it no
> matter
> how well tuned it is. I prefer to minimize any chance of that. You
> have to remember that unless you're running RTLinux or VXWorks (or DOS
> or VMS) you're not running a hard real time system. Shit happens.
>
The -rt kernel with fuill preemption actually is a hard real time system
(no one claims it is in the same league of reliability as QNX or
VXWorks, yet...) - it should be able to guarantee response times.
Of course the best RTOS in the world won't save you from apps that do
disk or GUI stuff in a non RT safe way, or from buggy ACPI
implementations that disappear the CPU out from under the OS for
milliseconds...
Lee
Received on Sun Feb 26 20:18:15 2006
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