--- a/tests/test-contrib-perf.t	Wed Feb 15 13:17:45 2017 -0800
+++ b/tests/test-contrib-perf.t	Wed Feb 15 13:07:26 2017 -0800
@@ -109,6 +109,7 @@
    perfvolatilesets
                  benchmark the computation of various volatile set
    perfwalk      (no help text available)
+   perfwrite     microbenchmark ui.write
   
   (use 'hg help -v perfstatusext' to show built-in aliases and global options)
   $ hg perfaddremove