diff --git a/doc/faq.adoc b/doc/faq.adoc index 8e6926b..b07c550 100644 --- a/doc/faq.adoc +++ b/doc/faq.adoc @@ -238,6 +238,29 @@ specified on the command line. For example: # chronyd -q 'pool pool.ntp.org iburst' ---- +=== Can `chronyd` be configured to control the clock like `ntpd`? + +It is not possible to perfectly emulate `ntpd`, but there are some options that +can configure `chronyd` to behave more like `ntpd`. + +In the following example the `minsamples` directive slows down the response to +changes in the frequency and offset of the clock. The `maxslewrate` and +`corrtimeratio` directives reduce the maximum frequency error due to an offset +correction and the `maxdrift` directive reduces the maximum assumed frequency +error of the clock. The `makestep` directive enables a step threshold and the +`maxchange` directive enables a panic threshold. The `maxclockerror` directive +increases the minimum dispersion rate. + +---- +minsamples 32 +maxslewrate 500 +corrtimeratio 100 +maxdrift 500 +makestep 0.128 -1 +maxchange 1000 1 1 +maxclockerror 15 +---- + === What happened to the `commandkey` and `generatecommandkey` directives? They were removed in version 2.2. Authentication is no longer supported in the