* Stephen Baker (stbaker@cisco.com) wrote:
>
> This patch will allow a process or thread to changes it's priority
> dynamically based on it's capabilities. In our case we wanted to use
> threads with Linux. To have true priorities we need root to use
> SCHED_FIFO or SCHED_RR; in many case root access is not allowed but we
> still wanted priorities. So we started using setpriority to change a
> threads priority. Now we used nice values from 19 to 0 which did not
> require root access. In some cases a thread need to raise it's nice
> level and this would fail. I also saw a note man renice(8) that said
> this bug exists.
hmm, SUS v3 seems to disagree.
"Only a process with appropriate privileges can lower its nice value."
and with this patch setpriority(2) is now inconsistent with nice(2)
(albeit i don't know how much longer that interface will persist in arch
independent portion of the kernel based on the comments surrounding it).
-chris
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This archive was generated by hypermail 2b29 : Sun Mar 31 2002 - 22:00:14 EST