Bug 12996 - Multiple downloads use lot of CPU for progress indicators.
Summary: Multiple downloads use lot of CPU for progress indicators.
Status: RESOLVED INVALID
Alias: None
Product: WebKit
Classification: Unclassified
Component: New Bugs (show other bugs)
Version: 523.x (Safari 3)
Hardware: Mac (PowerPC) OS X 10.4
: P2 Normal
Assignee: Nobody
URL:
Keywords: InRadar
Depends on:
Blocks:
 
Reported: 2007-03-07 00:12 PST by Gavin Sherlock
Modified: 2007-03-07 07:26 PST (History)
0 users

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Description Gavin Sherlock 2007-03-07 00:12:24 PST 
Download several (>10) large files simultaneously.
Note that CPU usage is high - I initially assumed this was due to the actual downloading.  However, when I clicked on a bookmark menu in the toolbar of an open browser window, I noticed 2 things:

1.  The download progress indicators stopped updating
2.  The CPU usage dropped from ~110% to ~40%

Upon unclicking the bookmark menu, progress indicators updated immediately, indicating that downloading had still continued, even though the progress indicators were not being updated.  The CPU usage also jumped back up.

Thus, more CPU was being used to indicate progress than to actually download the files.

On dual G5 2.0GHz, 10.4.8, r20004 of Webkit
Comment 1 Mark Rowe (bdash) 2007-03-07 00:24:29 PST 
Download progress indicators are a feature of Safari, not WebKit.  Please file this bug with Apple at <http://bugreporter.apple.com/>.
Comment 2 David Kilzer (:ddkilzer) 2007-03-07 02:50:42 PST 
Gavin, if you're not an ADC member, you may create a free "online" ADC account at https://connect.apple.com/.  Then you may file the Radar bug on bugreport.apple.com.

Please note the Radar bug number and add the "InRadar" keyword to this bug when you've done that.  Thanks!
Comment 3 Gavin Sherlock 2007-03-07 07:26:23 PST 
Added to radar:

radar://5045218