Re: [Haskell-cafe] Precise timing

You mean I should call chrt from the command line after starting the process, to modify its priority? This documentation http://hackage.haskell.org/package/posix-realtime-0.0.0.1/src/System/Posix/R... for the posix-realtime package https://hackage.haskell.org/package/posix-realtime says that it has a sched_setscheduler function. That supposedly exists on my OS (OS X 10.9). The chrt command, on the other hand, it does not recognize. On Sun, Oct 19, 2014 at 12:07 PM, Brandon Allbery wrote:

On Sun, Oct 19, 2014 at 3:03 PM, Jeffrey Brown wrote:

...

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

Possibly, although I think you'll find that specifying a realtime scheduler class requires extra permissions, so `sudo chrt ...` will be more helpful unless you can manipulate your account's or the program's Linux kernel capabilities.

-- brandon s allbery kf8nh sine nomine associates allbery.b@gmail.com ballbery@sinenomine.net unix, openafs, kerberos, infrastructure, xmonad http://sinenomine.net