From 23a8e176c3725f3640eaaf31a0a4c7497366c40f Mon Sep 17 00:00:00 2001 From: Jens Axboe Date: Tue, 29 Mar 2016 08:34:06 -0600 Subject: [PATCH] HOWTO/man: clarify that the usr/sys utilization numbers are averages Signed-off-by: Jens Axboe --- HOWTO | 4 +++- fio.1 | 4 +++- 2 files changed, 6 insertions(+), 2 deletions(-) diff --git a/HOWTO b/HOWTO index 0d3d2fb4..6e052f53 100644 --- 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 df140cfe..b54f568a 100644 --- 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) -- 2.25.1