Mercurial > public > mercurial-scm > hg-stable
diff contrib/perf.py @ 30997:5a9e4dc8e4fd
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 | 22fbca1d11ed |
| children | 8f5ed8fa39f8 |
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--- 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')):