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Windows 7: Usbport.sys causes high DPC over time.

29 Aug 2013   #41
ben561

Windows 7 Home Premium 64bit
 
 

thanks. successfully fixed that issue, although according to latencymon, i still have bad latency from acpi.sys...


My System SpecsSystem Spec
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29 Aug 2013   #42
Slappy

Windows 7 Ultimate x64
 
 

Quote   Quote: Originally Posted by ben561 View Post
thanks. successfully fixed that issue, although according to latencymon, i still have bad latency from acpi.sys...
Never had any issues there so can't help you with that one unfortunatly.
My System SpecsSystem Spec
29 Aug 2013   #43
ben561

Windows 7 Home Premium 64bit
 
 

OK FINALLY fixed this issue, there is a massive forum at Dell Studio 15/17/XPS & Other DPC spike issues - Workaround - Page 50 - NI User Forums that helped me out further.

you have to download process hacker, process explorer (another version) wouldnt allow me to suspend the acpi.sys

then once you SUSPEND the two driver threads - acpi.sys - then latencymon shows green along with green dpc latency checker. FINALLY
My System SpecsSystem Spec
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Reply

 Usbport.sys causes high DPC over time.




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