This issue tracker has been migrated to GitHub, and is currently read-only.
For more information, see the GitHub FAQs in the Python's Developer Guide.

Title: benchmarks ( number of decimal places in csv output
Type: behavior Stage:
Components: Benchmarks Versions: Python 3.6, Python 2.7
Status: closed Resolution: fixed
Dependencies: Superseder:
Assigned To: Nosy List: brett.cannon, florin.papa, pitrou, vstinner
Priority: normal Keywords:

Created on 2016-02-18 14:30 by florin.papa, last changed 2022-04-11 14:58 by admin. This issue is now closed.

File name Uploaded Description Edit
decimal_csv_output.patch florin.papa, 2016-02-18 14:30
Messages (2)
msg260460 - (view) Author: Florin Papa (florin.papa) * Date: 2016-02-18 14:30

This is Florin Papa from the Dynamic Scripting Languages Optimizations Team at Intel Corporation.

This patch checks whether the benchmark measurement that will be included in the csv output has more than 3 of the first decimal places equal to 0 and outputs more decimal places.

The problem is that each measurement in the csv output has only 6 decimal places (default for "%f" format), while some benchmarks, like unpack_sequence, will output values of the magnitude 0.0000xx (first four decimal places 0). This truncation of the original value can lead to incorrect results.
msg276225 - (view) Author: STINNER Victor (vstinner) * (Python committer) Date: 2016-09-13 09:38
Thanks for the bug report. The issue has been fixed in performance:
Date User Action Args
2022-04-11 14:58:27adminsetgithub: 70571
2016-09-13 09:38:47vstinnersetstatus: open -> closed

nosy: + vstinner
messages: + msg276225

resolution: fixed
2016-02-18 14:43:04vstinnersettitle: number of decimal places in csv output -> benchmarks ( number of decimal places in csv output
2016-02-18 14:30:26florin.papacreate