From d524094b6b3f968141af1a5a946be8e541dccbf5 Mon Sep 17 00:00:00 2001 From: Lennart Poettering Date: Thu, 16 Jan 2020 16:47:56 +0100 Subject: [PATCH] man: underline that AccuracySec= is about coalescing timer events, nothing else Fixes: #13328 --- man/systemd.timer.xml | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/man/systemd.timer.xml b/man/systemd.timer.xml index ebf6de4eb23..fca11b2d04c 100644 --- a/man/systemd.timer.xml +++ b/man/systemd.timer.xml @@ -225,7 +225,13 @@ prctl2 for details. To optimize power consumption, make sure to set this value as high as possible and as low as - necessary. + necessary. + + Note that this setting is primarily a power saving option that allows coalescing CPU + wake-ups. It should not be confused with RandomizedDelaySec= (see below) which + adds a random value to the time the timer shall elapse next and whose purpose is the opposite: to + stretch elapsing of timer events over a longer period to reduce workload spikes. For further details + and explanations and how both settings play together, see below. -- 2.39.2