From: Vladimir Sementsov-Ogievskiy Date: Thu, 28 Jan 2021 15:13:48 +0000 (+0300) Subject: simplebench: bench_one(): support count=1 X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=27eacb390e289edde4854f8bdface596572b0d8d;p=qemu.git simplebench: bench_one(): support count=1 statistics.stdev raises if sequence length is less than two. Support that case by hand. Signed-off-by: Vladimir Sementsov-Ogievskiy Reviewed-by: John Snow --- diff --git a/scripts/simplebench/simplebench.py b/scripts/simplebench/simplebench.py index 0a3035732c..27bc4d4715 100644 --- a/scripts/simplebench/simplebench.py +++ b/scripts/simplebench/simplebench.py @@ -83,7 +83,10 @@ def bench_one(test_func, test_env, test_case, count=5, initial_run=True, dim = 'seconds' result['dimension'] = dim result['average'] = statistics.mean(r[dim] for r in succeeded) - result['stdev'] = statistics.stdev(r[dim] for r in succeeded) + if len(succeeded) == 1: + result['stdev'] = 0 + else: + result['stdev'] = statistics.stdev(r[dim] for r in succeeded) if len(succeeded) < count: result['n-failed'] = count - len(succeeded)