HOWTO/man: clarify that the usr/sys utilization numbers are averages

Signed-off-by: Jens Axboe <axboe@fb.com>

diff --git a/HOWTO b/HOWTO
index 0d3d2fb4aaf7e47e6957d220875341a456e71a2f..6e052f532a0963c0d3710bb626f59696d60e2f9b 100644 (file)
--- a/HOWTO
+++ b/HOWTO
@@ -1987,7 +1987,9 @@ runt=             The runtime of that thread
 cpu=           CPU usage. User and system time, along with the number
                of context switches this thread went through, usage of
                system and user time, and finally the number of major
-               and minor page faults.
+               and minor page faults. The CPU utilization numbers are
+               averages for the jobs in that reporting group, while the
+               context and fault counters are summed.
 IO depths=     The distribution of io depths over the job life time. The
                numbers are divided into powers of 2, so for example the
                16= entries includes depths up to that value but higher

diff --git a/fio.1 b/fio.1
index df140cfe4ee0a06deaf5c81cc3349be7b00e9d6c..b54f568a46a9562aa94bd5d9f23c6fc9fd66dc72 100644 (file)
--- a/fio.1
+++ b/fio.1
@@ -1873,7 +1873,9 @@ and standard deviation.
 .TP
 .B cpu
 CPU usage statistics. Includes user and system time, number of context switches
-this thread went through and number of major and minor page faults.
+this thread went through and number of major and minor page faults. The CPU
+utilization numbers are averages for the jobs in that reporting group, while
+the context and fault counters are summed.
 .TP
 .B IO depths
 Distribution of I/O depths.  Each depth includes everything less than (or equal)