<refentry>
<refentryinfo>
- <date>May 19, 2011</date>
+ <date>December 8, 2011</date>
</refentryinfo>
<refmeta>
<para>
<varname>refresh_jitter</varname>
+ is used to provide a time range for randomizing the refresh
+ and retry timers to help avoid many zones needing to do a refresh
+ or retry at the same time.
This value is a real number.
- The maximum amount is 0.5.
- The default is 0.25.
+ The maximum amount is 0.5 (the new timer will be within
+ half the original time).
+ The default is 0.25 (up to a quarter sooner).
+ Set to 0 to disable this jitter.
</para>
-<!-- TODO: needs to be documented -->
-<!-- TODO: Set to 0 to disable the jitter. -->
<para>
<varname>reload_jitter</varname>
+<!-- is used to provide a slight random variation -->
+<!-- TODO: ask what the purpose of this is and why 0.75. -->
This value is a real number.
The default is 0.75.
</para>