Windows 7 Forums

Welcome to Windows 7 Forums. Our forum is dedicated to helping you find support and solutions for any problems regarding your Windows 7 PC be it Dell, HP, Acer, Asus or a custom build. We also provide an extensive Windows 7 tutorial section that covers a wide range of tips and tricks.


Windows 7: System Interrupts Spiking CPU

08 Dec 2013   #21
N00berG00ber

Windows 10 Pro
 
 

ok, im still getting DPC spikes even tho i updated my chipset drivers.... any ideas? also system inturrupts is going from .05% to .50% usage avg. and sometimes bumps up to 2% cpu...




Attached Images
System Interrupts Spiking CPU-capture.png 
My System SpecsSystem Spec
.
08 Dec 2013   #22
N00berG00ber

Windows 10 Pro
 
 

this is what DPC latency said:

MEASURED INTERRUPT TO USER PROCESS LATENCIES
____________________________________________________________________________________________________ _____
The interrupt to process latency reflects the measured interval that a usermode process needed to respond to a hardware request from the moment the interrupt service routine started execution. This includes the scheduling and execution of a DPC routine, the signaling of an event and the waking up of a usermode thread from an idle wait state in response to that event.

Highest measured interrupt to process latency (Ás): 1634.494396
Average measured interrupt to process latency (Ás): 8.223537

Highest measured interrupt to DPC latency (Ás): 264.877622
Average measured interrupt to DPC latency (Ás): 3.002724


____________________________________________________________________________________________________ _____
REPORTED ISRs
____________________________________________________________________________________________________ _____
Interrupt service routines are routines installed by the OS and device drivers that execute in response to a hardware interrupt signal.

Highest ISR routine execution time (Ás): 56.978024
Driver with highest ISR routine execution time: HDAudBus.sys - High Definition Audio Bus Driver, Microsoft Corporation

Highest reported total ISR routine time (%): 0.112855
Driver with highest ISR total time: hal.dll - Hardware Abstraction Layer DLL, Microsoft Corporation

Total time spent in ISRs (%) 0.139656

ISR count (execution time <250 Ás): 186923
ISR count (execution time 250-500 Ás): 0
ISR count (execution time 500-999 Ás): 0
ISR count (execution time 1000-1999 Ás): 0
ISR count (execution time 2000-3999 Ás): 0
ISR count (execution time >=4000 Ás): 0


____________________________________________________________________________________________________ _____
REPORTED DPCs
____________________________________________________________________________________________________ _____
DPC routines are part of the interrupt servicing dispatch mechanism and disable the possibility for a process to utilize the CPU while it is interrupted until the DPC has finished execution.

Highest DPC routine execution time (Ás): 144.744449
Driver with highest DPC routine execution time: netbt.sys - MBT Transport driver, Microsoft Corporation

Highest reported total DPC routine time (%): 0.256292
Driver with highest DPC total execution time: USBPORT.SYS - USB 1.1 & 2.0 Port Driver, Microsoft Corporation

Total time spent in DPCs (%) 0.510596

DPC count (execution time <250 Ás): 952624
DPC count (execution time 250-500 Ás): 0
DPC count (execution time 500-999 Ás): 0
DPC count (execution time 1000-1999 Ás): 0
DPC count (execution time 2000-3999 Ás): 0
DPC count (execution time >=4000 Ás): 0


____________________________________________________________________________________________________ _____
REPORTED HARD PAGEFAULTS
____________________________________________________________________________________________________ _____
Hard pagefaults are events that get triggered by making use of virtual memory that is not resident in RAM but backed by a memory mapped file on disk. The process of resolving the hard pagefault requires reading in the memory from disk while the process is interrupted and blocked from execution.


Process with highest pagefault count: latmon.exe

Total number of hard pagefaults 59
Hard pagefault count of hardest hit process: 19
Highest hard pagefault resolution time (Ás): 1792.760761
Total time spent in hard pagefaults (%): 0.002957
Number of processes hit: 5
My System SpecsSystem Spec
08 Dec 2013   #23
N00berG00ber

Windows 10 Pro
 
 

heres a second test:

MEASURED INTERRUPT TO USER PROCESS LATENCIES
____________________________________________________________________________________________________ _____
The interrupt to process latency reflects the measured interval that a usermode process needed to respond to a hardware request from the moment the interrupt service routine started execution. This includes the scheduling and execution of a DPC routine, the signaling of an event and the waking up of a usermode thread from an idle wait state in response to that event.

Highest measured interrupt to process latency (Ás): 5930.057927
Average measured interrupt to process latency (Ás): 7.660215

Highest measured interrupt to DPC latency (Ás): 311.729880
Average measured interrupt to DPC latency (Ás): 3.187445


____________________________________________________________________________________________________ _____
REPORTED ISRs
____________________________________________________________________________________________________ _____
Interrupt service routines are routines installed by the OS and device drivers that execute in response to a hardware interrupt signal.

Highest ISR routine execution time (Ás): 36.399864
Driver with highest ISR routine execution time: HDAudBus.sys - High Definition Audio Bus Driver, Microsoft Corporation

Highest reported total ISR routine time (%): 0.117146
Driver with highest ISR total time: hal.dll - Hardware Abstraction Layer DLL, Microsoft Corporation

Total time spent in ISRs (%) 0.136301

ISR count (execution time <250 Ás): 145863
ISR count (execution time 250-500 Ás): 0
ISR count (execution time 500-999 Ás): 0
ISR count (execution time 1000-1999 Ás): 0
ISR count (execution time 2000-3999 Ás): 0
ISR count (execution time >=4000 Ás): 0


____________________________________________________________________________________________________ _____
REPORTED DPCs
____________________________________________________________________________________________________ _____
DPC routines are part of the interrupt servicing dispatch mechanism and disable the possibility for a process to utilize the CPU while it is interrupted until the DPC has finished execution.

Highest DPC routine execution time (Ás): 147.619619
Driver with highest DPC routine execution time: USBPORT.SYS - USB 1.1 & 2.0 Port Driver, Microsoft Corporation

Highest reported total DPC routine time (%): 0.162781
Driver with highest DPC total execution time: rspLLL64.sys - Resplendence Latency Monitoring and Auxiliary Kernel Library, Resplendence Software Projects Sp.

Total time spent in DPCs (%) 0.350629

DPC count (execution time <250 Ás): 731247
DPC count (execution time 250-500 Ás): 0
DPC count (execution time 500-999 Ás): 0
DPC count (execution time 1000-1999 Ás): 0
DPC count (execution time 2000-3999 Ás): 0
DPC count (execution time >=4000 Ás): 0


____________________________________________________________________________________________________ _____
REPORTED HARD PAGEFAULTS
____________________________________________________________________________________________________ _____
Hard pagefaults are events that get triggered by making use of virtual memory that is not resident in RAM but backed by a memory mapped file on disk. The process of resolving the hard pagefault requires reading in the memory from disk while the process is interrupted and blocked from execution.


Process with highest pagefault count: explorer.exe

Total number of hard pagefaults 15
Hard pagefault count of hardest hit process: 12
Highest hard pagefault resolution time (Ás): 705.937925
Total time spent in hard pagefaults (%): 0.000363
Number of processes hit: 2
My System SpecsSystem Spec
.

09 Dec 2013   #24
N00berG00ber

Windows 10 Pro
 
 

anyone know what else could be causing these and how to fix?
My System SpecsSystem Spec
09 Dec 2013   #25
carwiz

Windows 7 Pro-x64
 
 

Click the ORB (Start) and type system in the Search box. In the Program group, select System Information. When the MSInfo screen comes up, expand Hardware Resources then click on IRQs. Wait for it to generate the list. This is all the hardware in your system that generate interrupts. You'll see there's quite a few so you can't eliminate them all. At least not without crashing.
My System SpecsSystem Spec
09 Dec 2013   #26
N00berG00ber

Windows 10 Pro
 
 

yea, this keeps happening sporadically. so ill just leave it alone and maybe check it out again in a few months or so.
My System SpecsSystem Spec
Reply

 System Interrupts Spiking CPU




Thread Tools Search this Thread
Search this Thread:

Advanced Search




Similar help and support threads
Thread Forum
Getting System Interrupts
Hi masters. Within 10-20 minutes after booting my whole PC starts to lag very heavily. I checked the Process Explorer and found "System Interrupts" consuming about 25 % of CPU. I had all the latest drivers but I have rolled backed to older driver for the GPU for now thinking that might have caused...
Performance & Maintenance
System interrupts and CPU
Hi all, i noticed a strange event at the ResourceMonitor, somehow, the process System Interuppts starts growing at Average section when i speak at the microphone on TeamSpeak, Xfire or Skype(any chatting software). I installed and update all the drivers, i have two microphones. One microphone is on...
Sound & Audio
System interrupts...
and to think this is would be tha place that you would find the help you need... anyway i have a problem with this famous system interrups cpu hogging process and i really wanna just kill it.made a system back up. nothin. tried the graphics card. nothin. i even tried process of elimination to see...
Hardware & Devices
System Interrupts
Hi! I have an hp pavillion dv6 1245dx core 2 duo 2.1 with 3 gb ram. It comes with windows Vista but i installed windows 7 and it was working fine. After a virus attack i re installed the windows and it works fine for around 30 mins but after that cpu usage goes to 100%. I have installed al the...
Hardware & Devices
System Interrupts
I upgraded to Windows 7 Ultimate 64 bit about a week ago. Since then I have been having a problem with System Interrupts. It seems after my computer has been on for about a half hour or so (sometimes less sometimes more) It starts to slow down. When I go into Task Manager it shows nothing using...
Performance & Maintenance
System Interrupts
Hello! I have constant 8% CPU usage in Windows 7. It does not show up under any particular process in Task Manager. Resource Monitor says that it is System Interrupts. I suspect this is a driver issue -- is there a way to get more detail on what is sending interrupts to the CPU?
General Discussion


Our Sites

Site Links

About Us

Find Us

Windows 7 Forums is an independent web site and has not been authorized, sponsored, or otherwise approved by Microsoft Corporation. "Windows 7" and related materials are trademarks of Microsoft Corp.

ę Designer Media Ltd

All times are GMT -5. The time now is 11:41.

Twitter Facebook Google+



Windows 7 Forums

Seven Forums Android App Seven Forums IOS App