Doh! Right. So probably this then?
https://hackage.haskell.org/package/posix-realtime

On Sun, Oct 19, 2014 at 11:54 AM, Brandon Allbery <allbery.b@gmail.com> wrote:
On Sun, Oct 19, 2014 at 2:50 PM, Jeffrey Brown <jeffbrown.the@gmail.com> wrote:
I therefore suspect I have to teach myself, as Brandon suggested, a realtime scheduler.

Unless you're running on embedded hardware, you're probably looking for something like sched_setscheduler(2) (or perhaps more helpfully, chrt(1)) on Linux.

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