753330 - Resizing the SourceEditor is very slow when it contains long lines.

Status: RESOLVED INVALID

(DevTools :: Source Editor, defect, P2)

Description

[Paul Rouget [:paul]]

Attachment: load this file in Source Editor

Orion is very slow when handling very long lines.
For example, http://duckduckgo.com includes a minified script.
Loading this script in the debugger makes the process of resizing the debugger very slow.
Another slowness happens when you click on Orion, and then press "ctrl-a" to select
all the content. On my computer, it takes 2 seconds see the visual result.

STR: Load the content of the attached file into a SourceEditor instance (scratchpad for example). Then resize the scratchpad window. It's slow.

Comment 1

[Mihai Sucan [:msucan]]

This is, unfortunately, an Orion problem.

There's an upstream bug report about slow rendering with very long lines.

https://bugs.eclipse.org/bugs/show_bug.cgi?id=354435

Will ping the Orion team about this issue once again.

Thanks for your report!

Comment 2

[Rob Campbell [:rc] (:robcee)]

Moving to Source Editor component.

Filter on CHELICERAE.

Comment 3

[Patrick Brosset <:pbro>]

This was an Orion bug. We have been using CodeMirror for a long time now. Let's close this.