1
vote
0answers
98 views

Windows unresponsive, CPU utilization uninformative

In many situations my Windows 7 box becomes unresponsive, but the Task Manager shows 0 CPU utilization for all processes. Obviously it is the kernel/Windows itself that is sucking all the cycles and ...
1
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1answer
416 views

In OSX Terminal freezes on text select

Once in a while, if I've been using the terminal and click on it to select text, the terminal freezes, with the mouse pointer becoming the spinning wheel. Activity monitor also shows 100% CPU usage. I ...
0
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1answer
98 views

Computer Lockup

I have a small computer that I am running a video application on (video conferencing-style). At inconsistent times, it will 'lock up' - video will freeze, if I am telneting into it from another ...
4
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2answers
780 views

What is causing sudden freezing during running real-time program?

So I run a high intensive (CPU/GPU) real-time program. During normal execution suddenly everything freezes for 1-4 seconds. I opened "Process Explorer" in the background to help gain insight and maybe ...
0
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1answer
649 views

Windows XP - Explorer CPU spike and freeze

System: Windows XP SP3, Intel i3 Issue: Windows Explorer process spikes my CPU usage to 50% and freezes. Only resolution is to kill the process in the Task Manager and restart manually. ...
0
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1answer
323 views

How to prevent my Windows 7 to hang when running intense calculations on all cores?

When i am using all my 4 cores, its really slow to open any folders or even right click on desktop, or open any programs, and so on. Is there any way to prevent my Windows 7 from using 100% of my CPU ...
7
votes
5answers
11k views

Why does Firefox cause high-CPU-usage “spikes” every few seconds?

When I start Firefox, I have no problems for a while, but after a couple of days, CPU spikes start to occur. During a spike, Firefox freezes and then stops. Spikes occur every seven to ten seconds, ...