Bug 127182

Summary:	Web Inspector: freeze when stopped at breakpoint and hovering over huge array
Product:	WebKit	Reporter:	bas
Component:	Web Inspector	Assignee:	Nobody <webkit-unassigned>
Status:	RESOLVED DUPLICATE
Severity:	Normal	CC:	bburg, inspector-bugzilla-changes, webkit-bug-importer
Priority:	P2	Keywords:	InRadar
Version:	528+ (Nightly build)
Hardware:	All
OS:	All

Description bas 2014-01-17 12:09:37 PST

Context:
I'm developing a financial charting application with WebGL. Huge datasets are displayed and handled (arrays containing up to 500,000 data points).

Issue:
When using the debugger and stopping at breakpoint or manually stepping, when you hover over a variable, a popup will show with the value of the variable. Great feature.
But, when hovering over one of those huge arrays, a popup will show up too, and even show "Array[<huge total>]" header in it, but the rest of the popup stays empty, the tab or window freezes and two processes peg 2 cores at 100%, each using 1,45GB memory (the processes are 'SafariForWebKitDevelopment Web Content' and 'Safari Web Content'). I can then only close the tab or window, the rest of the tab or window is frozen.

Expected behavior:
The first few entries in the array should show up in the popover.

Comment 1 Radar WebKit Bug Importer 2014-01-17 12:11:33 PST

<rdar://problem/15847944>

Comment 2 BJ Burg 2018-08-23 13:37:28 PDT


*** This bug has been marked as a duplicate of bug 143589 ***

Comment 3 BJ Burg 2018-08-23 13:37:50 PDT

We only fetch the first 100 entries, but this isn't great either.