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| author | rmcilroy@chromium.org <rmcilroy@chromium.org@0039d316-1c4b-4281-b951-d872f2087c98> | 2013-07-10 13:10:23 +0000 |
|---|---|---|
| committer | rmcilroy@chromium.org <rmcilroy@chromium.org@0039d316-1c4b-4281-b951-d872f2087c98> | 2013-07-10 13:10:23 +0000 |
| commit | 19cbf13dc344795b0cd81169a26a5fcb3f885b04 (patch) | |
| tree | 02dc9cea2f2bc049778c9f0ed2fff601519dbc32 /tools/bisect-perf-regression.py | |
| parent | 4dc80c99aa670e717283f7ca45730efdb05eeec4 (diff) | |
| download | chromium_src-19cbf13dc344795b0cd81169a26a5fcb3f885b04.zip chromium_src-19cbf13dc344795b0cd81169a26a5fcb3f885b04.tar.gz chromium_src-19cbf13dc344795b0cd81169a26a5fcb3f885b04.tar.bz2 | |
Add a simple tool which enables automated bisecting of codebase with manual test
Creates a tool which enables bisection the codebase, with the user prompted to
manually test a given revision and enter whether it is good or bad. Useful in
tracking down the CL which caused a bug which can be triggered manually.
BUG=
Review URL: https://chromiumcodereview.appspot.com/18316008
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@210824 0039d316-1c4b-4281-b951-d872f2087c98
Diffstat (limited to 'tools/bisect-perf-regression.py')
| -rwxr-xr-x | tools/bisect-perf-regression.py | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/tools/bisect-perf-regression.py b/tools/bisect-perf-regression.py index 35ed89c..37eef69 100755 --- a/tools/bisect-perf-regression.py +++ b/tools/bisect-perf-regression.py @@ -166,8 +166,10 @@ def CalculateTruncatedMean(data_set, truncate_percent): def CalculateStandardDeviation(v): - mean = CalculateTruncatedMean(v, 0.0) + if len(v) == 1: + return 0.0 + mean = CalculateTruncatedMean(v, 0.0) variances = [float(x) - mean for x in v] variances = [x * x for x in variances] variance = reduce(lambda x, y: float(x) + float(y), variances) / (len(v) - 1) @@ -253,8 +255,7 @@ def RunProcessAndRetrieveOutput(command): shell = IsWindows() proc = subprocess.Popen(command, shell=shell, - stdout=subprocess.PIPE, - stderr=subprocess.PIPE) + stdout=subprocess.PIPE) (output, _) = proc.communicate() |