Tijs van Bakel wrote:
> Try using #define HZ 1024 or some other high number in
> /usr/src/linux/include/asm-i386/param.h
> Note that this breaks some programs like 'top' and 'ps'
Are you sure ?
I use HZ=1000 and 'top' and 'ps' appear to work fine (RH 5.1, RT-kernel
2.0.35) .
for clarity on the original question:
real-time interrupts will get handled within approximately 5-50
microseconds, its the linux user space stuff that must wait for a
timeslice.
with Hz=1000 a linux user space signal handler will only jitter by about
2 msec if you don't go into long kernel calls, do intensive X jobs, use
floppy DMA, etc.
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Steve Rosenbluth
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