User-Agent: Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.5; en-US; rv:220.127.116.11) Gecko/20100713 Firefox/3.6.7 Build Identifier: Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.5; en-US; rv:18.104.22.168) Gecko/20100713 Firefox/3.6.7 Whenever a page invokes the Geolocation API call navigator.geolocation.watchPosition, Firefox CPU utilization goes above 100%. Since this is on a Mac OS machine, I expect that the source is somewhere in NetworkGeolocationProvider or "@mozilla.org/wifi/monitor" (maybe due to too-frequent polling of WiFi data?), but I haven't tracked it down precisely. As soon as the page in question is closed (and shutdown() is called on NetworkGeolocationProvider), CPU usage goes back to normal. Reproducible: Always Steps to Reproduce: 1. Open a page that calls navigator.geolocation.watchPosition() 2. Wait a few seconds 3. Close the page - or - 1. Open any page 2. Open a Firebug console 3. Make a call to navigator.geolocation.watchPosition() 4. Wait a few seconds 5. Close the page Actual Results: Firefox CPU utilization ramps up to >100% after watchPosition() call, then falls back to normal shortly after page is closed. Expected Results: CPU usage should remain roughly constant.
Hey Richard, Can you try this page: http://people.mozilla.org/~dougt/demos/wifi_access_point_test.html This will just report what wifi ap's are in the area. You will have to enable UniversalXPConnect (something not very save to run w/ so use it only to test this. you may also want to review the code above.)
Seems to work correctly for me in 4.0b4, and CPU utilization remains reasonable (<=30%) Also confirmed that CPU utilization remains low for watchPosition() usage at this URI: <http://geopriv.dreamhosters.com/geo.html> Similar results with a fresh copy of Firefox 3.6.8. In other words, cannot replicate with current versions. Might be that something in 3.6.8 fixed it, or it was a spurious effect. Sample output from your script follows (X == [0-9a-e]) -----BEGIN----- XX-XX-XX-XX-XX-XX AS82 -XX XX-XX-XX-XX-XX-XX Atelier19123 -XX XX-XX-XX-XX-XX-XX Belkin_G+MIMO_Wireless_151761 -XX XX-XX-XX-XX-XX-XX BrianandDee -XX XX-XX-XX-XX-XX-XX gie -XX XX-XX-XX-XX-XX-XX Green Bull Apartment -XX XX-XX-XX-XX-XX-XX linksys -XX XX-XX-XX-XX-XX-XX NoVA417 -XX XX-XX-XX-XX-XX-XX pokerplaya -XX XX-XX-XX-XX-XX-XX ronodor -XX XX-XX-XX-XX-XX-XX SANDPAIL -XX XX-XX-XX-XX-XX-XX sans-fils -XX XX-XX-XX-XX-XX-XX yetanother -XX 1 -----END-----
if you see it again, please reopen.