persistent-nodemap: document storage.revlog.persistent-nodemap.mmap=no
The feature is gaining public facing document, its options too.
Differential Revision: https://phab.mercurial-scm.org/D9757
--- a/mercurial/helptext/config.txt Wed Jan 13 23:51:12 2021 +0100
+++ b/mercurial/helptext/config.txt Thu Jan 14 01:12:42 2021 +0100
@@ -1943,6 +1943,16 @@
Turning this option off can result in large increase of repository size for
repository with many merges.
+``revlog.persistent-nodemap.mmap``
+ Whether to use the Operating System "memory mapping" feature (when
+ possible) to access the persistent nodemap data. This improve performance
+ and reduce memory pressure.
+
+ Default to True.
+
+ For details on the "persistent-nodemap" feature, see:
+ :hg:`help config format.use-persistent-nodemap`.
+
``revlog.reuse-external-delta-parent``
Control the order in which delta parents are considered when adding new
revisions from an external source.