Automated Testing System - Statistics

I decided to pull gather some statistics about the automated testing system. These statistics were collected on Wednesday, May 6, 2009 at 4:00 AM GMT. Automatic generation of these statistics along with analysis is a feature I have in mind for ATS 2.0. I appreciate donations to the chipin (right), as this project requires a lot of development time.

From the data you can see that the test slaves have been running tests for the equivalent of 200 days. The system has been running for 192 days and not all the data was included since some of it is inaccurate. That means the system has saved 200 days of developer's time! It is clear that the ATS is a vital part of test driven development. Additionally the time that would have been spent fixing regressions and new bugs has been drastically lowered.

Item Function Value
Time testing SUM 17,310,047 seconds (~288,500 minutes, ~200 days)
Test run (test suite) COUNT 42,351
MAX 3620 seconds (~60 minutes)
MIN 17 seconds
AVG 804 seconds (~ 13 minutes)
STDDEV_POP 783 seconds (~13 minutes)
Test (patch, times tested) COUNT 6,953
MAX 86
MIN 1
AVG 10
STDDEV_POP 15
Test pass count MAX 11,453
MIN 0
AVG 4,265
STDDEV_POP 4,910
Test fail count MAX 6,989
MIN 0
AVG 9
STDDEV_POP 155
Test exception count MAX 813,795
MIN 0
AVG 160
STDDEV_POP 9,893

One item you may notice is the maximum test exception count of 813,795. The patch that caused that many exceptions proved that our system is scalable! The patch is much appreciated. :)

Saved the current test result breakdown.

Result distribution

The average test run length for all the active test slaves can be seen below. This data is only looking at the latest test run for each patch in the system.

Test slave Average test length*
4 730 seconds
5 1,753 seconds
7 1,352 seconds
8 576 seconds
9 2,438 seconds
10 1,942 seconds
12 1,161 seconds
16 217 seconds

* Excludes test runs that do not pass initial checks and fail before running test suite.

Average Test Length

Comments

Nice pie chart! How did you make it? Software?

A really good software too vovvvv also gives detailed results