From 94b014865cf62cccfb24b268aaa2e13dc3f92df3 Mon Sep 17 00:00:00 2001 From: Miroslav Lichvar Date: Tue, 30 Apr 2019 14:45:23 +0200 Subject: [PATCH] doc: add more recommendations for best stability to FAQ --- doc/faq.adoc | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/doc/faq.adoc b/doc/faq.adoc index b07c550..318b418 100644 --- a/doc/faq.adoc +++ b/doc/faq.adoc @@ -217,6 +217,12 @@ server ntp.local minpoll 0 maxpoll 0 xleave hwtimestamp eth0 ---- +For best stability, the CPU should be running at a constant frequency (i.e. +disabled power saving and performance boosting). Energy-Efficient Ethernet +(EEE) should be disabled in the network. The switches should be configured to +prioritize NTP packets, especially if the network is expected to be heavily +loaded. + If it is acceptable for NTP clients in the network to send requests at an excessive rate, a sub-second polling interval may be specified. A median filter can be enabled in order to update the clock at a reduced rate with more stable