Bug 22992

Summary: Javascript console should not attempt to scroll to end of console if console is not visible
Product: WebKit Reporter: Oliver Hunt <oliver>
Component: Web Inspector (Deprecated)Assignee: Alexander Pavlov (apavlov) <apavlov>
Severity: Normal CC: apavlov, commit-queue, pfeldman, rik, timothy
Priority: P2 Keywords: InRadar
Version: 528+ (Nightly build)   
Hardware: All   
OS: All   
Description Flags
[PATCH] Proposed solution none

Description Oliver Hunt 2008-12-25 02:17:23 PST
Whenever a message is sent to the console the web inspector attempts to scroll the appropriate portion of the console to be visible.  Unfortunately if the console is not visible, this is very heavy wait operation as it requires building the rendertree, calculating where it should scroll to, then throwing the rendertree away.

1. use javascript along the lines of javascript:while(1) console.log("foo")

Shark shows 94% of time being spent in style recalc.

Comment 1 Alexander Pavlov (apavlov) 2010-02-25 08:14:27 PST
This scenario is also extremely slow when the console is visible. The scrollIntoView calls should be throttled.
Comment 2 Alexander Pavlov (apavlov) 2010-02-25 08:21:40 PST
Created attachment 49489 [details]
[PATCH] Proposed solution
Comment 3 WebKit Commit Bot 2010-02-25 14:14:57 PST
Comment on attachment 49489 [details]
[PATCH] Proposed solution

Clearing flags on attachment: 49489

Committed r55255: <http://trac.webkit.org/changeset/55255>
Comment 4 WebKit Commit Bot 2010-02-25 14:15:01 PST
All reviewed patches have been landed.  Closing bug.