Bug 134447 - deviceorientation event - high cpu load
Summary: deviceorientation event - high cpu load
Status: NEW
Alias: None
Product: WebKit
Classification: Unclassified
Component: UI Events (show other bugs)
Version: 528+ (Nightly build)
Hardware: iPhone / iPad iOS 7.0
: P2 Blocker
Assignee: Nobody
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2014-06-30 10:00 PDT by Oleg Isonen
Modified: 2014-06-30 10:02 PDT (History)
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Description Oleg Isonen 2014-06-30 10:00:50 PDT 
Pure listening to this event with noop handler leads to ~10% cpu load on iphone 5 ios 7. More than that xcode says "Other Processes" consume 50-70% cpu at the same time.

Both levels go down when event listener is removed.
Comment 1 Oleg Isonen 2014-06-30 10:02:55 PDT 
Agent string: Mozilla/5.0 (iPhone; CPU iPhone OS 7_1_1 like Mac OS X) AppleWebKit/537.51.2 (KHTML, like Gecko) Mobile/11D201 (358166864)