[time-nuts] FreeBSD, NetBSD, or Minix-III?

[Lux, James P]

On 5/16/09 4:32 PM, "Chuck Harris" <cfharris at erols.com> wrote:

> Lux, James P wrote:
> 
>>> I don't believe that will be happening in a message passing microkernel
>>> (like minix) anytime soon... unless you build all of the timekeeping
>>> software into the kernel, and then you are in the process of becoming
>>> a monolithic kernel ;-)
>>> 
>> 
>> Or, do what I'm doing for a software radio that uses RTEMS, do the critical
>> timing stuff in hardware, and the software just manages the hardware.
> 
> That's fine, as long as the critical timing stuff never has to
> pass into code space.  If it does, then you are stuck with the
> OS's latency issues.
>
That's the whole design requirement.. Thou shalt not touch the data with
software.