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erlang
0314-kernel-Update-note-about-heart-rebooting-o...
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File 0314-kernel-Update-note-about-heart-rebooting-on-NTP-upda.patch of Package erlang
From e5e2fd334b9fec2bedab9ee6987b96ca2aec1f87 Mon Sep 17 00:00:00 2001 From: Frank Hunleth <fhunleth@troodon-software.com> Date: Fri, 16 Mar 2018 10:11:09 -0400 Subject: [PATCH] kernel: Update note about heart rebooting on NTP updates The timestamp code in heart uses monotonic time so it is immune to NTP changes. --- lib/kernel/doc/src/heart.xml | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/lib/kernel/doc/src/heart.xml b/lib/kernel/doc/src/heart.xml index 5b5b71e521..46c7ce60b6 100644 --- a/lib/kernel/doc/src/heart.xml +++ b/lib/kernel/doc/src/heart.xml @@ -59,8 +59,9 @@ <pre> % <input>erl -heart -env HEART_BEAT_TIMEOUT 30 ...</input></pre> <p>The value (in seconds) must be in the range 10 < X <= 65535.</p> - <p>Notice that if the system clock is adjusted with - more than <c>HEART_BEAT_TIMEOUT</c> seconds, <c>heart</c> + <p>When running on OSs lacking support for monotonic time, + <c>heart</c> is susceptible to system clock adjustments of more than + <c>HEART_BEAT_TIMEOUT</c> seconds. When this happens, <c>heart</c> times out and tries to reboot the system. This can occur, for example, if the system clock is adjusted automatically by use of the Network Time Protocol (NTP).</p> -- 2.16.3
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