Bug 19732 - Fairly epic regression in insane mandelbrot test
Summary: Fairly epic regression in insane mandelbrot test
Alias: None
Product: WebKit
Classification: Unclassified
Component: JavaScriptCore (show other bugs)
Version: 528+ (Nightly build)
Hardware: Mac OS X 10.5
: P1 Normal
Assignee: Cameron Zwarich (cpst)
URL: REGRESSION: http://nerget.com/jstests...
Keywords: Regression
Depends on:
Reported: 2008-06-23 14:33 PDT by Oliver Hunt
Modified: 2008-09-04 00:56 PDT (History)
3 users (show)

See Also:


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Description Oliver Hunt 2008-06-23 14:33:53 PDT
I see a change from 2s with a build from a few weeks ago, to 10s with a nightly from a few days ago.
Comment 1 Geoffrey Garen 2008-06-23 16:15:58 PDT
Somebody want to see if codegen for the test changed?
Comment 2 Maciej Stachowiak 2008-06-23 17:08:25 PDT
Step 1 would be to narrow the point of regression.
Comment 3 Cameron Zwarich (cpst) 2008-06-23 17:24:59 PDT
I made some codegen changes recently. They mostly affect code that needs a full scope chain, so it doesn't seem like they are at fault. Regardless, I'll assign this to myself.
Comment 4 Cameron Zwarich (cpst) 2008-06-24 16:13:17 PDT
I don't see a regression. It is in the same range for all of the nightlies I have on my machine going back to the beginning of June. The only way I can get that kind of a slowdown is if I use a debug build instead of a release build.

Do you remember which nightlies two nightlies demonstrated a regression for you?
Comment 5 Cameron Zwarich (cpst) 2008-09-04 00:56:42 PDT
This was something random that is no longer a problem.