Re: [PATCH] [request for inclusion] Realtime LSM

From: Jack O'Quin
Date: Sun Jan 16 2005 - 18:57:50 EST



> * Jack O'Quin <joq@xxxxxx> wrote:
>> According to the manpage, nice(2) is per-process not per-thread. That
>> does not give the granularity we need.

Ingo Molnar <mingo@xxxxxxx> writes:
> the manpage is incorrect - sys_nice() is per-thread. (Btw., you could
> use setpriority() too.)

OK. Where is this stuff documented?

BTW, I think this violates POSIX, which states...

The nice value set with nice() shall be applied to the process. If
the process is multi-threaded, the nice value shall affect all
system scope threads in the process.

(It does not affect SCHED_FIFO or SCHED_RR threads, however.)

Is it possible to call sched_setscheduler() with a thread ID instead
of a pid? That's what I really need. JACK sets and resets the thread
priorities from a different thread.
--
joq
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