Re: [rtl] OnCore real time?

[Stuart Hughes <sehughes@zentropix.com>]

yodaiken@fsmlabs.com wrote:
> 
> On Thu, May 04, 2000 at 02:38:46PM -0700, Robert Kavaler wrote:
> > Their system is based on:
> >     1. Mach "microkernel"
> 
> My technical comment: Yuck.
> 
>

I'm with Victor on this.  We looked at Mach, 2.5 years ago for about 3
months to see if we could use it as an RTOS.  We even had Mklinux DR3
running on x86.  I have to say it was a miserable experience, and the
timing guarantees were very poor (I saw one report for the PA-RISC
version that had occasional blips up to 500 milliseconds if my memory
serves).  IMHO the only Linux real-time implementations that give
guarantees at the 30 usec range are RTLinux/RTAI.  

Regards, Stuart.