run-perf-tests should have an option to pause before running tests so we can attach Instruments
Created attachment 126351 [details]
Comment on attachment 126351 [details]
View in context: https://bugs.webkit.org/attachment.cgi?id=126351&action=review
> + self.assertEqual(stderr, "Ready to run test?\n")
It's strange that we use stderr for this
Yeah, we didn't understand logging when we started webkitpy.
Committed r107284: <http://trac.webkit.org/changeset/107284>