Messages in this thread | | | Subject | Re: a joint letter on low latency and Linux | From | Jes Sorensen <> | Date | 03 Jul 2000 17:58:19 +0200 |
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>>>>> "Victor" == yodaiken <yodaiken@fsmlabs.com> writes:
Victor> On Thu, Jun 29, 2000 at 06:38:53PM -0700, Linus Torvalds Victor> wrote: >> The number of problems that really need RT-linux is practically >> zero for normal uses. This is, btw, why I've never applied the >> RTLinux patches to the standard kernel tree. My personal opinion is >> that the RTLinux patches should _not_ be available by default, so >> that only people who really need the functionality start using it.
Victor> The interesting question is what happens when you have 3 Gbit Victor> ethernet feeds with 20 video and audio streams over them and Victor> you want to ensure a baseline level of service for all of Victor> them. How do you do this without some fundamental hard RT.
You make sure to have a big box and run it in soft realtime mode - it's still a lot cheaper than doing it hard realtime. And you are actually likely to get more performance this way.
The places where I want to see HRT is mainly in control systems where you cannot afford to ever skip a frame (ie. I don't want to sit on a 747 that suddenly does the BSOD or a powerplant blowing up).
Jes
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