From: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
To: qemu-block@nongnu.org
Cc: qemu-devel@nongnu.org, den@openvz.org, vsementsov@virtuozzo.com,
mreitz@redhat.com, John Snow <jsnow@redhat.com>
Subject: [PATCH v3 2/9] simplebench: bench_one(): support count=1
Date: Tue, 23 Mar 2021 16:47:27 +0300 [thread overview]
Message-ID: <20210323134734.72930-3-vsementsov@virtuozzo.com> (raw)
In-Reply-To: <20210323134734.72930-1-vsementsov@virtuozzo.com>
statistics.stdev raises if sequence length is less than two. Support
that case by hand.
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: John Snow <jsnow@redhat.com>
---
scripts/simplebench/simplebench.py | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
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)
--
2.29.2
next prev parent reply other threads:[~2021-03-23 13:53 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-23 13:47 [PATCH v3 0/9] simplebench improvements Vladimir Sementsov-Ogievskiy
2021-03-23 13:47 ` [PATCH v3 1/9] simplebench: bench_one(): add slow_limit argument Vladimir Sementsov-Ogievskiy
2021-03-23 13:47 ` Vladimir Sementsov-Ogievskiy [this message]
2021-03-23 13:47 ` [PATCH v3 3/9] simplebench/bench-backup: add --compressed option Vladimir Sementsov-Ogievskiy
2021-03-23 13:47 ` [PATCH v3 4/9] simplebench/bench-backup: add target-cache argument Vladimir Sementsov-Ogievskiy
2021-03-23 13:47 ` [PATCH v3 5/9] simplebench/bench_block_job: handle error in BLOCK_JOB_COMPLETED Vladimir Sementsov-Ogievskiy
2021-03-23 13:47 ` [PATCH v3 6/9] simplebench/bench-backup: support qcow2 source files Vladimir Sementsov-Ogievskiy
2021-03-23 13:47 ` [PATCH v3 7/9] simplebench/bench-backup: add --count and --no-initial-run Vladimir Sementsov-Ogievskiy
2021-03-23 13:47 ` [PATCH v3 8/9] simplebench/bench-backup: add --drop-caches argument Vladimir Sementsov-Ogievskiy
2021-03-23 13:47 ` [PATCH v3 9/9] MAINTAINERS: update Benchmark util: add git tree Vladimir Sementsov-Ogievskiy
2021-04-27 8:58 ` [PATCH v3 0/9] simplebench improvements Vladimir Sementsov-Ogievskiy
2021-05-04 8:59 ` Vladimir Sementsov-Ogievskiy
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