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Bug 311752

Summary:

Scrolling StyledText is very slow / causes 100% cpu utilization

Product:

[Eclipse Project] Platform

Reporter:

Johannes Rieken <johannes_rieken>

Component:

SWT

Assignee:

Silenio Quarti <Silenio_Quarti>

Status:

RESOLVED FIXED

QA Contact:

Severity:

major

Priority:

CC:

Silenio_Quarti, skovatch

Version:

4.0

Target Milestone:

3.6

Hardware:

Macintosh

OS:

Mac OS X - Carbon (unsup.)

Whiteboard:

Attachments:

Description	Flags
Scrolling in the Java editor (around 200 loc)	none

Description Johannes Rieken

2010-05-05 11:09:19 EDT

Build Identifier: 3.6M6

SL 10.6.3, 64bit, cocoa-swt

After a short while of coding (around 4hrs) I see a massive drop of performance. Restarting eclipse helps. I see this quite often but have no clue how to debug/trace this. I'm attaching a screen recording showing what I mean. I'd be happy to trace this down further using your instructions,  Yourkit (what should I be loooking at), or a custom plugin export. 



Reproducible: Always

Comment 1 Johannes Rieken

2010-05-05 11:11:51 EDT

Created attachment 167156 [details]
Scrolling in the Java editor (around 200 loc)

Comment 2 Silenio Quarti

2010-05-05 11:43:02 EDT

Please could you try a recent build (I20100504-0800). We have a fixed a performance problem while scrolling on that build.

Comment 3 Johannes Rieken

2010-05-06 04:16:34 EDT

Alright. I have adopted I20100504-0800. From a first try, it feels a lot snappier. I keep you updated...

Comment 4 Scott Kovatch

2010-06-07 14:01:58 EDT

Scrolling speed issues were addressed 3.6rc1, so I'm resolving it as fixed. If you have a different example that's slow please file a new bug. Thanks!