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Posted by Mikek on April 3, 2008, 5:18 am
Please log in for more thread options Interesting.
Firstly, thanks for this help.
Wasn't paying too much attention earlier but the usage today has been
peaking at 20% rather than the 30% that it was doing on Tuesday.
Anyway, when I disabled the add-ons the usage dropped to about 10% which is
the same as I see if nothing other than the Task Manager is running. When I
reopen IE as normal it goes back to 20%.
How would I know if any of the add-ons were malware?
Should I be right to worry about that 10% usage when IE is not running as I
don't see similar on any other machines. Having said that this machine has a
broadband connection to the internet and the other machines connect to the
net through this one.
Mike
"Volodymyr M. Shcherbyna" wrote:
> IE might have addons which actually can be malware. Try to launch IE without
> add-ons and observ the CPU usage. To launch IE withoiut addons, type in cmd:
>
> iexplore.exe -extoff
>
> --
> V.
> This posting is provided "AS IS" with no warranties, and confers no
> rights.
> > Yes I think I follow that.
> > However, when I look on other machines I have here, the CPU usage is
> > negligible if there are a couple of IE pages open but no other work being
> > done yet on this machine CPU usage is peaking at 30% every 5 seconds.
> >
> > Or am I missing a point here?
> >
> > Mike
> >
> > "Volodymyr M. Shcherbyna" wrote:
> >
> >> You have some approximation already.
> >>
> >> iexplorer takes the most CPU time. System is actually not a process. This
> >> is
> >> a collection of system threads which are running in kernel mode. Any
> >> arbitrary thread which is spawned using PsCreateSystemThread takes some
> >> CPU
> >> time, and this time has to be summed somehow, that's why the 'System'
> >> fake
> >> process entity was invented.
> >>
> >> --
> >> V.
> >> This posting is provided "AS IS" with no warranties, and confers no
> >> rights.
> >> > When I open the Task Manager and look at the Performance tab I can see
> >> > that
> >> > my CPU usage fluctuates between 0 and 30% every 5 seconds so that the
> >> > history
> >> > shows a graph line similar to a mountain range with mountains of equal
> >> > height.
> >> >
> >> > If I disconnect from the internet there is CPU usage at the same time
> >> > intervals but no more than 5%.
> >> >
> >> > I have looked at the Processes tab (sorted by CPU) to try and see what
> >> > is
> >> > using the processor and the order of usage is changing every 1 second
> >> > but
> >> > the
> >> > processes at the top apart from System Idle Process and taskmge.exe
> >> > generally seems to be:
> >> >
> >> > iexplore.exe
> >> > System
> >> > Helphost.exe
> >> > helpsvc.exe
> >> >
> >> > I am using XP and IE7
> >> > I run McAfee Security centre.
> >> > I have run scans with both SpyBot and AdAware.
> >> >
> >> > How can I find out what it is that is running on my machine without my
> >> > knowledge?
> >> >
> >> > If you are able to give any clues or information, please assume you are
> >> > talking to an idiot when you reply.
> >> >
> >> > Thanks
> >> > Mike
> >>
> >>
> >>
>
>
>
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