Signed-off-by: Clemens Ladisch <clemens@xxxxxxxxxx> --- a/man2/sched_rr_get_interval.2 +++ b/man2/sched_rr_get_interval.2 @@ -98,18 +98,24 @@ .\" for SCHED_RR processes. For RR processes the timeslice is always .\" DEF_TIMESLICE, or 0.1 secs. .\" Was the following really true for older kernels? -.\" Must build a 2.6.8 kernel and retest, and rewrite the following text -.\" appropriately. +.\" It is again true for at least Linux 2.6.12, but stopped in 2.6.24. POSIX does not specify any mechanism for controlling the size of the round-robin time quantum. However, Linux provides a (nonportable) method of doing this. -The quantum can be controlled by adjusting the process's nice value (see +The quantum of both +.B SCHED_RR +and +.B SCHED_OTHER +processes can be controlled by adjusting the process's nice value (see .BR setpriority (2)). Assigning a negative (i.e., high) nice value results in a longer quantum; assigning a positive (i.e., low) nice value results in a shorter quantum. The default quantum is 0.1 seconds; the degree to which changing the nice value affects the quantum has varied somewhat across kernel versions. +Since Linux 2.6.24, the +.B SCHED_RR +quantum cannot be modified. .\" .SH BUGS .\" As of Linux 1.3.81 .\" .BR sched_rr_get_interval () -- To unsubscribe from this list: send the line "unsubscribe linux-man" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
