Well, unfortunately no paticular service (like SearchIndexer e.g.) or
other process is reponsible for this high CPU usage. Instead when I
start Notepad e.g. only Notepad has a CPU usage of 100%. But most of
the time is spend in kernel mode (marked red in performance graph),
which is quite unusual in my opinion and was not the case on Windows
XP. I thought it could be a driver problem, but CPU usage of
interrupts and DPC is less then 4% (-> no driver problem).

Regards,
Stefan

On 23 Mai, 08:25, "Milhouse Van Houten" <b...@myrealbox.com> wrote:
> With Task Manager or Process Explorer, shouldn't you be able to narrow down
> the culprit to a particular task? I'm not quite sure what the kernel mode
> reference means, but it would be more helpful if you broke CPU usage by
> task.
>
> "Stefan H." <hofma...@googlemail.com> wrote in message
>
> news:1179883214.815411.249390@w5g2000hsg.googlegroups.com...
>
>
>
> > Hi,
>
> > I have just installed Windows Vista Business Edition and have noticed
> > some performance issues in comparison with Windows XP, where
> > everything works fine. CPU usage reaches 100% percent even if there is
> > almost no activity. When I start an application CPU usage of that
> > process is always 100%. When I scroll up and down in Notepad for
> > example CPU usage is at least 40% (only Notepad) and some applications
> > like Terratec Home Cinema (for watching tv) are unusable. I have
> > disabled everything for testing (all visual effects/Aero, ReadyBoost,
> > SuperFetch, Windows Defender, DEP and so on) but the problem persists.
> > Process Explorer shows that most activity is taking place in kernel
> > mode (at least 2/3 of CPU usage). But CPU usage of interrupts and DPC
> > is <4%. I have the following system:
>
> > Mainboard: Kudoz 7 (VIA ST266A chipset)
> > CPU: Athlon XP 1,4 GHZ
> > Graphics: ATI Radeon 9600 PCI (only AGP 4X)
> > Memory: 1 GB RAM
>
> > Windows Performance Index:
>
> > CPU: 2,7
> > Memory: 3,7
> > Graphics (Aero): 2,9
> > Graphics (Games): 3,4
> > Harddisk: 5,1
>
> > I know that my PC is not the best one. But even large Java Swing
> > applications under Windows XP (like Netbeans IDE) where faster then
> > Notepad is in Windows Vista. I think something is wrong in kernel
> > mode. Is there any (new security) feature I can disable to increase
> > performance ?
>
> > Thanks
> > Stefan- Zitierten Text ausblenden -
>
> - Zitierten Text anzeigen -