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Windows Forum / Internet Explorer / General Topics / June 2008Mouse causes 98% CPU Usage in IE7
http://en.wikipedia.org/wiki/Comparison_of_web_browsers I am using a P4 @ 2.4gHz XP SP2 system w 512mb, and notice when the above page is open in IE7 any mouse movement over any portion of the page causes cpu usage to peg over 90% and I think that's a little odd. So do I! What kind of mouse is it? Do you see the same behavior using a different mouse?  Signature~Robear Dyer (PA Bear) MS MVP-IE, Mail, Security, Windows Desktop Experience - since 2002 AumHa VSOP & Admin http://aumha.net DTS-L http://dts-l.net/ > http://en.wikipedia.org/wiki/Comparison_of_web_browsers > > I am using a P4 @ 2.4gHz XP SP2 system w 512mb, and notice when the above > page is open in IE7 any mouse movement over any portion of the page causes > cpu usage to peg over 90% and I think that's a little odd. 2button wheel mouse, yes the behavior is the same using another two button mouse on ps/2 port, the app causing the spike is iexplore.exe can the symptom be reproduced? > So do I! > [quoted text clipped - 6 lines] >> causes >> cpu usage to peg over 90% and I think that's a little odd. [Clarifiation: My "So do I!" comment was IN RE your "I think that's a little odd."] I use "two button" wheeled USB2 mouses (wireless and corded) and I do not see this behavior in WinXP SP2, sorry. Are the latest drivers for your mouses installed? If a cordless mouse: => Make sure the mouse's receiver isn't located near any electrical devices (e.g., desklamp; router) => Does the behavior persist with a corded mouse? Further diagnostic tests you can do: 1. Does this behavior persist if you start IE7 in No Add-ons mode? To start IE7 in No Add-ons mode: Right-click on the blue IE desktop icon and select Start without Add-ons; or Start > (All) Programs > Accessories > System Tools > Internet Explorer (No add-ons). Troubleshooting and Internet Explorer’s (No Add-ons) Mode: http://blogs.msdn.com/ie/archive/2006/07/25/678113.aspx 2. Does the problem persist if you Reset IE7 Settings (RIES)? http://support.microsoft.com/kb/923737 <= Read before using! 3. If you uninstall (a) IE7 *exactly* per the link below (which automatically returns you to IE6), (b) all toolbars and (c) all third-party Windows Themes (including Window Blinds) and do NOT reinstall IE7, does this behavior persist? NB: If it does, do NOT reinstall IE7 yet! Uninstalling IE7 http://www.ie-vista.com/kbase2.html [Only use the Command %windir%\ie7\spuninst\spuninst.exe if you cannot uninstall via Add/Remove Programs!] IE7 (Un)Installation and Anti-Malware Applications: http://blogs.msdn.com/ie/archive/2006/10/11/IE7-Installation-and-Anti_2D00_Malwa re-Applications.aspx 4. Required reading IMHO before reinstalling IE7: Sandi's Installation Tips <= Steps #1-8, #10 & #11; take note of #12, then STOP http://www.ie-vista.com/known_issues.html#pre-install I strongly recommend using http://www.microsoft.com/windows/downloads/ie/getitnow.mspx as the installation source, not Automatic/Windows Update. Direct Download link: http://www.microsoft.com/downloads/details.aspx?familyid=9ae91ebe-3385-447c-8a30 -081805b2f90b Tip: Save the installer to your desktop, do not Run it. 5. Make *certain* that you check in at Windows Update immediately after reinstalling IE7 to install any critical updates offered. If Optional Updates category offers Root Certificates update, I recommend installing it to take full advantage of IE7's additional security. Signature~PA Bear > 2button wheel mouse, yes the behavior is the same using another two button > mouse on ps/2 port, the app causing the spike is iexplore.exe can the [quoted text clipped - 16 lines] >>> page is open in IE7 any mouse movement over any portion of the page >>> causes cpu usage to peg over 90% and I think that's a little odd. {Clarification: Did you visit Wikipedia? It seems to affect all of their pages.} > [Clarifiation: My "So do I!" comment was IN RE your "I think that's a > little odd."] [quoted text clipped - 81 lines] >>>> page is open in IE7 any mouse movement over any portion of the page >>>> causes cpu usage to peg over 90% and I think that's a little odd. OK, I see what you mean now. Using a wireless USB Notebook mouse, I do see a very brief (i.e., less than 1 second) spike in CPU when I first hover over a link on http://en.wikipedia.org/wiki/Comparison_of_web_browsers, but if I then hover over one or more other links, no. I have no explanation for such behavior, bw. > {Clarification: Did you visit Wikipedia? It seems to affect all of their > pages.} [quoted text clipped - 88 lines] >>>>> page is open in IE7 any mouse movement over any portion of the page >>>>> causes cpu usage to peg over 90% and I think that's a little odd. Thanks PA Bear! I think I will forego the uninstallation routine and other troubleshooting since it affects your system also. It's mouse "movement" on these pages that is the problem, something wiki is doing with their pages probably, or too many links on the page maybe? > OK, I see what you mean now. Using a wireless USB Notebook mouse, I do > see a very brief (i.e., less than 1 second) spike in CPU when I first [quoted text clipped - 98 lines] >>>>>> page is open in IE7 any mouse movement over any portion of the page >>>>>> causes cpu usage to peg over 90% and I think that's a little odd. It's not mouse movement on the page, it's hovering over a link...and then only the first link...here. I have no idea why this happens but since CPU only spikes for a very brief instance (here), I'm not going to worry about it. > Thanks PA Bear! I think I will forego the uninstallation routine and other > troubleshooting since it affects your system also. It's mouse "movement" [quoted text clipped - 106 lines] >>>>>>> page is open in IE7 any mouse movement over any portion of the page >>>>>>> causes cpu usage to peg over 90% and I think that's a little odd. > http://en.wikipedia.org/wiki/Comparison_of_web_browsers > > I am using a P4 @ 2.4gHz XP SP2 system w 512mb, and notice when the above > page is open in IE7 any mouse movement over any portion of the page causes > cpu usage to peg over 90% and I think that's a little odd. I am thinking the problem is in default Unicode UTF-8 settings in IE7 |
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