Returning performance 0 (error) every time

[balazsorban44]

When running lighthousebot on any of my PRs, Performance always is 0. Running it from Chrome Dev Tools, or from https://www.webpagetest.org/lighthouse, there is no such problem:

with lighthousebot on PR (flags --runner=wpt --pwa=100 --perf=77 --a11y=78 --bp=100 --seo=1):

WebPageTest:

Does CPU/Memory Power / Device emulation has anything to do with it?
What should I do?

[balazsorban44]

@ebidel ?

[ebidel]

Hmm, it looks like something is up with CPU never being idle on WPT. That's causing TTI to Error out and never calculated. I wonder what version of Lighthouse they're running and/or if something may have changed.

@brendankenny @paulirish have you seen this before?

[balazsorban44]

@ebidel @brendankenny @paulirish Any news on this? 🤞