989758 - AWFY B2G Octane: Huge noise level on Richards (3x slower/faster)

Status: RESOLVED INVALID

(Core :: JavaScript Engine: JIT, defect)

Description

[Nicolas B. Pierron [:nbp]]

This noise appeared within the following range:

  http://hg.mozilla.org/integration/mozilla-inbound/pushloghtml?fromchange=7c1c4f4ed61ac411474447e1fb40cc4ced3a0a2a&tochange=c18345da71b97122ee912daf5a15910f20561ed7

I do not yet know if this is something related to Gaia, or if it is tied to a visual issue.  I'll know more on Monday when I will see the phone.

I do not think that Bug 952942 is related to the current noise level, but I guess that the extra allocation of the VM Function might cause such behavior.

Comment 1

[Jan de Mooij [:jandem]]

(In reply to Nicolas B. Pierron [:nbp] from comment #0)
> I do not think that Bug 952942 is related to the current noise level, but I
> guess that the extra allocation of the VM Function might cause such behavior.

Octane doesn't use array comprehensions at all, so it seems unlikely it regressed this. I agree it could be the extra VMFunction wrapper; but still seems weird.

Comment 2

[Till Schneidereit [:till]]

B2G isn't a supported platform anymore, so marking as invalid.