[Haskell-cafe] Precise timing

[Jeffrey Brown]

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/Realtime/RTSched.hsc>
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 <allbery.b at gmail.com>
wrote:

> On Sun, Oct 19, 2014 at 3:03 PM, Jeffrey Brown <jeffbrown.the at gmail.com>
> 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 at gmail.com
> ballbery at sinenomine.net
> unix, openafs, kerberos, infrastructure, xmonad
> http://sinenomine.net
>
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