diff --git a/man7/sched.7 b/man7/sched.7
index 4787d752f..a72fcaa9b 100644
--- a/man7/sched.7
+++ b/man7/sched.7
@@ -766,6 +766,15 @@ and the setting has the same effect as modifying the nice level via
 .\"
 .\" FIXME How do the nice value of a process and the nice value of
 .\" an autogroup interact? Which has priority?
+.\"
+.\" It *appears* that the autogroup nice value is used for CPU distribution
+.\" between task groups, and that the process nice value has no effect there.
+.\" (I.e., suppose two autogroups each contain a CPU-bound process,
+.\" with one process having nice==0 and the other having nice==19.
+.\" It appears that they each get 50% of the CPU.)
+.\" It appears that the process nice value has effect only with respect to
+.\" scheduling relative to other processes in the *same* autogroup.
+.\" Is this correct?
 
 The use of the
 .BR cgroups (7)