Message boards :
Number crunching :
Something weird is happening
Message board moderation
Author | Message |
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AllenIN Send message Joined: 5 Dec 00 Posts: 292 Credit: 58,297,005 RAC: 311 |
Just recently, after a lightening storm which took out our power, I have a situation with one of my systems. It's an AMD Athlon 64 X2 Dual Core Processor 5000+ . Suddenly at idle, it is showing 90% usage on one core and 20% on the other core. When I check in task mgr, nothing is running and nothing is taking over the system. Anyone ever see this before?? Thanks for any insight! Allen |
Grant (SSSF) Send message Joined: 19 Aug 99 Posts: 13722 Credit: 208,696,464 RAC: 304 |
Suddenly at idle, it is showing 90% usage on one core and 20% on the other core. When I check in task mgr, nothing is running and nothing is taking over the system. Is that with "Show all processes" selected? If so i'd suggest getting Process Explorer & seeing what it shows. High CPU usage, and nothing showing in Task Manager can be a sign of a Root kit. Grant Darwin NT |
archae86 Send message Joined: 31 Aug 99 Posts: 909 Credit: 1,582,816 RAC: 0 |
Does it persist after a full power down reboot? |
AllenIN Send message Joined: 5 Dec 00 Posts: 292 Credit: 58,297,005 RAC: 311 |
Suddenly at idle, it is showing 90% usage on one core and 20% on the other core. When I check in task mgr, nothing is running and nothing is taking over the system. Would that happen only on one core of the processor? I'll check it out with a root kit sniffer in the mean time. Thanks |
AllenIN Send message Joined: 5 Dec 00 Posts: 292 Credit: 58,297,005 RAC: 311 |
Does it persist after a full power down reboot? Yes, after several reboots and a video driver update too. |
JakeTheDog Send message Joined: 3 Nov 13 Posts: 153 Credit: 2,585,912 RAC: 0 |
Which OS is it running? I had a Athlon dual core with Vista where it one day started doing that maybe 50% of the time at startup. I can't remember if it was only 1 core or both. But the service using the processor would show up in task manager. My best guess was my Windows Update was broken. Nothing I did fixed it. |
Wembley Send message Joined: 16 Sep 09 Posts: 429 Credit: 1,844,293 RAC: 0 |
I have an old AMD laptop running Vista that does the same thing. I'm pretty sure it's Windows Update trying to scan for needed updates. It takes over 24 hours for it to run it's scan. I stopped turning it on. |
Dr Who Fan Send message Joined: 8 Jan 01 Posts: 3194 Credit: 715,342 RAC: 4 |
I have an old AMD laptop running Vista that does the same thing. SAME HERE - started with the May 2016 "Patch Tuesday" updates... I thought my Desktop Visa PC was acting up. I let it run for 3 days before DISABLING MS WIN updates. It will eat up a full core trying running "svchost.exe" to look for updates but it NEVER touches the www according to ProcessExplorer. No amount of trying to "fix" has resulted in a working MS Win update. |
betreger Send message Joined: 29 Jun 99 Posts: 11360 Credit: 29,581,041 RAC: 66 |
I let it run for 3 days before DISABLING MS WIN updates. It will eat up a full core trying running "svchost.exe" Thanks for the info I've been trying for months attempting to address that parasite. Turning off auto updates seems to have fixed it. I will monitor closely. I expect my meager production to increase by over 30%. |
AllenIN Send message Joined: 5 Dec 00 Posts: 292 Credit: 58,297,005 RAC: 311 |
Which OS is it running? I had a Athlon dual core with Vista where it one day started doing that maybe 50% of the time at startup. I can't remember if it was only 1 core or both. But the service using the processor would show up in task manager. My best guess was my Windows Update was broken. Nothing I did fixed it. Hey, that sounds like what is happening to me. I'm currently having trouble with MS Update as well. It doesn't ever download even when you ask it to and yes, it's Vista 32. I'm guessing that it finally straightened itself out on your machine?? |
AllenIN Send message Joined: 5 Dec 00 Posts: 292 Credit: 58,297,005 RAC: 311 |
I have an old AMD laptop running Vista that does the same thing. Sounds like I need to just turn it off to fix the problem. |
AllenIN Send message Joined: 5 Dec 00 Posts: 292 Credit: 58,297,005 RAC: 311 |
Thanks one and all. That did the trick. No more automatic updating for me!! |
betreger Send message Joined: 29 Jun 99 Posts: 11360 Credit: 29,581,041 RAC: 66 |
Thanks one and all. That did the trick. No more automatic updating for me!! That is the way it seems to me on my 2 W7 boxes, the W8.1 box has not yet been affected. What an insidious parasite M$ has produced. |
AllenIN Send message Joined: 5 Dec 00 Posts: 292 Credit: 58,297,005 RAC: 311 |
Thanks one and all. That did the trick. No more automatic updating for me!! I suspect it is a way to get people to upgrade to Windows 10. |
The_Matrix Send message Joined: 17 Nov 03 Posts: 414 Credit: 5,827,850 RAC: 0 |
got here some issues too. But on gpu, cuda5.0 wus running only 0.020% percent/ per second. An its a GTX 670 (device 0) , i got the GT 640 (device 1) parallel running and got insane quicker running time of a cuda 5.0 workunit , whats going wrong ? Of course it tryed several device drivers...and restarts have no effect on it. Is it windows 7 (64-Bit) ? ------------------ sorry, i found the error. there was gammacorrection acivated in the drivers , sorry |
betreger Send message Joined: 29 Jun 99 Posts: 11360 Credit: 29,581,041 RAC: 66 |
Thanks one and all. That did the trick. No more automatic updating for me!! It came back on the W7 Pro box so I got radical. I shut down Boinc so I wouldn't lose the work I had done then I went to task manager and ended the task. I was pleased Windoz didn't crash and things have stable for over a day. |
jason_gee Send message Joined: 24 Nov 06 Posts: 7489 Credit: 91,093,184 RAC: 0 |
got here some issues too. But on gpu, cuda5.0 wus running only 0.020% percent/ per second. No shame in finding gremlins messing with the system. It helps others looking to figure out what's going on. In my case I run f.lux (for changing colour temperature to reduce eyestrain), which definitely affects performance across all sorts of applications (980 SC, games and video streaming) "Living by the wisdom of computer science doesn't sound so bad after all. And unlike most advice, it's backed up by proofs." -- Algorithms to live by: The computer science of human decisions. |
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