Subject: Re: Has anybody studied the interrupt latency and preemption latency
To: Jun Sun <email@example.com>
From: Willy Jacobs <firstname.lastname@example.org>
Date: 12/30/2004 10:45:05
Jun Sun wrote:
> On the preemption latency I am looking for the long execution pathes in
> syscalls for some typical benchmark workload. (netbsd kernel is not
> preemptible, right?)
> Since the workload works on both Linux and netbsd, it would be
> interesting to do a side-by-side comparison between them. Mvista.com
> used to have some numbers posted on their website for Linux, but I can't
> find anymore. But it is easy in general to find out those tests and
> numbers for Linux.
Another company which claims beter results then MontaVista is TimeSys
(see there side for more info - www.timesys.com).
If your targets are x86 processors also Solaris may be worth looking,
because the Solaris kernel is preemptive and has other real-time facilities.