--- a/mercurial/help/config.txt Sat Feb 09 15:22:12 2013 -0800
+++ b/mercurial/help/config.txt Sat Feb 09 15:51:26 2013 -0800
@@ -1463,3 +1463,15 @@
``templates``
Where to find the HTML templates. Default is install path.
+
+``worker``
+----------
+
+Parallel master/worker configuration. We currently perform working
+directory updates in parallel on Unix-like systems, which greatly
+helps performance.
+
+``numcpus``
+ Number of CPUs to use for parallel operations. Default is 4 or the
+ number of CPUs on the system, whichever is larger. A zero or
+ negative value is treated as ``use the default``.