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Windows 7: High DPC Latency and frequent Interrupts

1 Week Ago   #1
Dreck

win 7
 
 
High DPC Latency and frequent Interrupts

I am getting frequent interrupts which freezes the whole system for a second. I am attaching some screenshots from Latency Monitor which might be useful.



I have also made a xperf trace too using this command:

Code:
xperf -on PROC_THREAD+LOADER+PROFILE+INTERRUPT+DPC+DRIVERS+POWER -stackwalk Profile -BufferSize 1024 -MinBuffers 256 -MaxBuffers 256 -MaxFile 256 -FileMode Circular
Here is the link to the trace file Dropbox - CPU.zip

Can someone have a look at this trace file and suggest what could be the problem?
I would be glad to provide any additional info if needed..

Thanks


My System SpecsSystem Spec
.
1 Week Ago   #2
Dreck

win 7
 
 

Can anyone help me with this?
My System SpecsSystem Spec
1 Week Ago   #3
fireberd

Windows 10 64 bit
 
 

Your PC specs are needed. Will help someone to try and help you.

This looks like an old PC??? The i8042prt.sys, according to what I find, is a driver for an old PS/2 port.
My System SpecsSystem Spec
.

1 Week Ago   #4
Dreck

win 7
 
 

Thanks for your reply

http://speccy.piriform.com/results/B...n6gzQnHXeD48M2

Here is my system spec from speccy. Please let me know if you need anything else.
My System SpecsSystem Spec
1 Week Ago   #5
fireberd

Windows 10 64 bit
 
 

What is the Dell Model? e.g. Inspiron 950, etc.

I didn't see it directly in the Latency Mon list, but I saw "Google Updater" listed in the system specs software. I use my desktop for my recording studio PC and I had installed Google Chrome. After that I started to get clicks and dropouts in recording. I ran Latency Mon and it showed I had problems. The last thing dod was install Chrome so I uninstalled Chrome, but that did not uninstall the google updater. I uninstalled the updater but it didn't really uninstall. I finally had to manually edit the registry to remove all traces of it. As soon as I did that, Latency Mon was "happy" and my recording clicks and dropouts went away. May not be your problem but something to consider, especially since WLAN and network are mentioned.
My System SpecsSystem Spec
1 Week Ago   #6
fireberd

Windows 10 64 bit
 
 

I'll be gone for a while so I can't immediately answer.
My System SpecsSystem Spec
1 Week Ago   #7
Dreck

win 7
 
 

Its Dell Inspiron 5521. I will try uninstalling google updater too. Will let you know how it goes.
My System SpecsSystem Spec
1 Week Ago   #8
fireberd

Windows 10 64 bit
 
 

Ah, a Laptop. Don't forget to reboot the PC before checking DPC Latency after uninstalling the Google Updater.
My System SpecsSystem Spec
1 Week Ago   #9
Dreck

win 7
 
 

Uninstalling google chrome didnt make any difference. Removed registry and restarted. Still getting interrupts and latency monitor graph is off the charts
My System SpecsSystem Spec
1 Week Ago   #10
fireberd

Windows 10 64 bit
 
 

Wi-Fi is another potential. Temporarily disable Wi-Fi and see if anything changes.
I don't get much more from what you've posted.
My System SpecsSystem Spec
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 High DPC Latency and frequent Interrupts




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