tree c17579d085bd9f857d6d9f2803816335a5d45aea
parent 13b3b307426dd0181419b5eab2302e95473dcf5b
author Josh Bleecher Snyder <josharian@gmail.com> 1601421087 -0700
committer Josh Bleecher Snyder <josharian@gmail.com> 1603403928 +0000

cmd/stress: print elapsed time, percentage failure

Add more information to the output of stress.


Prior to this change, stress printed lines like:

8288 runs so far, 2 failures


After this change, stress prints lines like:

1m5s: 8288 runs so far, 2 failures (0.02%)


I've found the timing information to be helpful in that it helps
me anticipate how long a new stress run might take to reach some
number of iterations I've deemed necessary to convince myself
that a bug has been fixed.

I've found the % failure to be helpful when there are multiple failures;
I can use them to gauge whether I've made the test more reliable.

I've been using this patch for a while and found it helpful
on numerous occasions, so I figured I should upstream it.

Change-Id: If0c9b74c30353898bacb38a81f27796f74eb4064
Reviewed-on: https://go-review.googlesource.com/c/tools/+/258299
Trust: Josh Bleecher Snyder <josharian@gmail.com>
Run-TryBot: Josh Bleecher Snyder <josharian@gmail.com>
gopls-CI: kokoro <noreply+kokoro@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>