642516 - Performance Measurement: Unmeasured events can't be -1

Status: RESOLVED WONTFIX

(Core :: JavaScript Engine, defect)

Description

[Graeme McCutcheon [:graememcc]]

...when interrogating it in script.

Found this trying to get rid of the many local test failures on the machine I'm now building on. The "can measure everything?" test was failing, as apparently on this system, there'll be no measuring of bus cycles, thank you. I'll be filing on that, as I don't necessarily think that should be a failure.

However, the point is, despite it not being measured, the pm.bus_cycles == -1 test doesn't fail. It'll always succeed: the uint64 -1 gets cast to a jsdouble, and hence script sees 1844674407309552000.

Comment 1

[Matthew Gaudet (he/him) [:mgaudet]]

API was removed in Bug 1560425