How to get the cause of high CPU usage by DPC / Interrupt
Posted 29 August 2010 - 02:04 PM
Thanks for checking the file!
Yes, I just uninstalled the WLAN device and restarted but it's still the same.
Bwt it's using an old driver from 2006 but when I update it to the recent driver it says the update went fine but in the device manager it still shows the old driver.
I'm going to use a cable connection soon again anyways but it doesn't seem to be related to the problem.
Posted 30 August 2010 - 01:29 AM
Thank you for the detail tutorial.
I have similar problem with the interrupts - at random time it goes over 20% of CPU usage, usually after waking laptop from the sleep (dell studio 1535, win 7 64bit). After that computer loose networking completely (wlan and lan). I tried with the latest available drivers but no change.
Now, I go through your tutorial but I get this "Unknown" thing that spikes my CPU. I'll appreciate if you can take a look at trace table, maybe you'll have more luck - link is:
Thanks a lot.
Posted 30 August 2010 - 04:54 AM
Posted 30 August 2010 - 05:45 AM
Thank you for checking the file. Will try memory dump.
Posted 02 September 2010 - 03:17 AM
Thank you VERY much for this problem solving protocol. It seems to have solved an intermittent 100% CPU usage when I was running minimal programs. I had very high USBPort.sys DPC Actual duration values. Too soon to see if it's truly fixed but I'm optimistic.
Posted 10 September 2010 - 05:24 AM
For those who have driver problems I recomend Driver Genius Professional Edition, this program finds drivers out of date and updates them, since at first I did not knew that the problem was from the battery I tried every stupid driver updating program and this was the best one...
This post has been edited by abaddon: 10 September 2010 - 05:53 AM
Posted 23 September 2010 - 09:48 AM
Does anyone know how to fix this storport.sys error? Any help would be greatly appreciated!
Posted 23 September 2010 - 11:17 AM
Also try this hotfix:
A hotfix rollup that improves the reliability and the performance of an Advanced Format disk with a 4KB physical sector size on a computer that is running Windows 7 or Windows Server 2008 R2 is available
Posted 23 September 2010 - 01:12 PM
I installed both the windows hotfix and the newest drivers for my motherboard.....but after running for about 15minutes, storport.sys started hogging 30+% of my cpu again. Is there anything else that may fix this issue?
Posted 14 October 2010 - 01:15 PM
I am very happy to bump into this forum, since DPC problem is giving me headache for a while without any solution....
My setup is Quadcore 6600, Geforce GX 460, 3 gb ram windows vista home. I am using EMU 0404 usb audio interface and having latency during both playback and recording.
I downloaded the symbols as described
Checking my IRQ I see that my usb ports are shared with my video card.
Just recently changed my card from another NVDIA and no change in latency (perhaps even worse?)
Daemon tools is installed in my system but during xperf logging I deactiviated all virtual drives and shut down its process
I am using an MSI mainboard. I havent updated my BIOS since I was a a bit scared with all those user agreements and advice in their website: i.e. If you are content with your system, dont flash your BIOS ...etc
Attached is my xperf output. I have an unknown driver and perhaps the video card taking the lead? Any help with identifying the problem and finding a solution is much appreciated...
Thanks in advance
This post has been edited by goky: 14 October 2010 - 01:20 PM
- ← How to speed up boot process under Windows Vista or Windows 7
- Windows Tips 'n' Tweaks
- Next Topic →