Author: MagicAndre1981
Subject: Need help with Ntoskrnl thread causing high CPU
Posted: 31 October 2014 at 2:50pm
the CPUusage comes from function ntoskrnl.exe!KeAcquireSpinLockRaiseToDpc and ntoskrnl.exe!KeReleaseSpinLock.
![]()
We already had such thing last year:
http://forum.sysinternals.com/need-help-with-ntoskrnl-thread-causing-high-cpu_topic29289_post143414.html?KW=KeAcquireSpinLockRaise#143414
The next CPU usage of a driver which I see is the usbfilter.sys. This is an AMD driver. Remove this AMD usb driver and look if this improves it.
Subject: Need help with Ntoskrnl thread causing high CPU
Posted: 31 October 2014 at 2:50pm
![]() Edit: nevermind, I found it. http://www.filedropper.com/highcpuusage-copy |
the CPUusage comes from function ntoskrnl.exe!KeAcquireSpinLockRaiseToDpc and ntoskrnl.exe!KeReleaseSpinLock.

We already had such thing last year:
http://forum.sysinternals.com/need-help-with-ntoskrnl-thread-causing-high-cpu_topic29289_post143414.html?KW=KeAcquireSpinLockRaise#143414
The next CPU usage of a driver which I see is the usbfilter.sys. This is an AMD driver. Remove this AMD usb driver and look if this improves it.