changeset 30977:5a9e4dc8e4fd

contrib: add a write microbenchmark to perf.py I'm adding some performance logging to ui.write - this benchmark lets us confirm that the cost of that logging is acceptably low. At this point, the microbenchmark on Linux over SSH shows: ! wall 3.213560 comb 0.410000 user 0.350000 sys 0.060000 (best of 4) while on the Mac locally, it shows: ! wall 0.342325 comb 0.180000 user 0.110000 sys 0.070000 (best of 20)
author Simon Farnsworth <simonfar@fb.com>
date Wed, 15 Feb 2017 13:07:26 -0800
parents e92daf156d5c
children fdecd24ca4dc
files contrib/perf.py tests/test-contrib-perf.t
diffstat 2 files changed, 12 insertions(+), 0 deletions(-) [+]
line wrap: on
line diff
--- a/contrib/perf.py	Wed Feb 15 13:17:45 2017 -0800
+++ b/contrib/perf.py	Wed Feb 15 13:07:26 2017 -0800
@@ -1269,6 +1269,17 @@
         timer(fn, title=title)
         fm.end()
 
+@command('perfwrite', formatteropts)
+def perfwrite(ui, repo, **opts):
+    """microbenchmark ui.write
+    """
+    timer, fm = gettimer(ui, opts)
+    def write():
+        for i in range(100000):
+            ui.write(('Testing write performance\n'))
+    timer(write)
+    fm.end()
+
 def uisetup(ui):
     if (util.safehasattr(cmdutil, 'openrevlog') and
         not util.safehasattr(commands, 'debugrevlogopts')):
--- 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