Computer stuttering once every few minutes.

[hallflukai]

Hey everybody! Lately (past few days) my computer has stuttered for maybe half-a-second every few minutes.

I ran LatencyMon and here's what it gave me. I think of particular note are some drivers giving me an especially high ISR count, and every ISR is coming from only one of my CPU cores.

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CONCLUSION
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Your system seems to have difficulty handling real-time audio and other tasks. You may experience drop outs, clicks or pops due to buffer underruns. One problem may be related to power management, disable CPU throttling settings in Control Panel and BIOS setup. Check for BIOS updates.
LatencyMon has been analyzing your system for 0:04:54 (h:mm:ss) on all processors.


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SYSTEM INFORMATION
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Computer name: ARCHER-PC
OS version: Windows 7 , 6.1, build: 7600 (x64)
Hardware: ASUSTeK COMPUTER INC., P8H61-M LE/CSM
CPU: GenuineIntel Intel(R) Core(TM) i5-2500 CPU @ 3.30GHz
Logical processors: 4
Processor groups: 1
RAM: 8156 MB total


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CPU SPEED
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Reported CPU speed: 3291.0 MHz
Measured CPU speed: 2210.0 MHz (approx.)

Note: reported execution times may be calculated based on a fixed reported CPU speed. Disable variable speed settings like Intel Speed Step and AMD Cool N Quiet in the BIOS setup for more accurate results.


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MEASURED INTERRUPT TO USER PROCESS LATENCIES
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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 (µs): 1276.364486
Average measured interrupt to process latency (µs): 2.618826

Highest measured interrupt to DPC latency (µs): 242.954098
Average measured interrupt to DPC latency (µs): 0.802782


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REPORTED ISRs
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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 (µs): 82.147979
Driver with highest ISR routine execution time: USBPORT.SYS - USB 1.1 & 2.0 Port Driver, Microsoft Corporation

Highest reported total ISR routine time (%): 0.039984
Driver with highest ISR total time: ataport.SYS - ATAPI Driver Extension, Microsoft Corporation

Total time spent in ISRs (%) 0.076013

ISR count (execution time <250 µs): 488743
ISR count (execution time 250-500 µs): 0
ISR count (execution time 500-999 µs): 0
ISR count (execution time 1000-1999 µs): 0
ISR count (execution time 2000-3999 µs): 0
ISR count (execution time >=4000 µs): 0


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REPORTED DPCs
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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 (µs): 209.018232
Driver with highest DPC routine execution time: tcpip.sys - TCP/IP Driver, Microsoft Corporation

Highest reported total DPC routine time (%): 0.131372
Driver with highest DPC total execution time: ataport.SYS - ATAPI Driver Extension, Microsoft Corporation

Total time spent in DPCs (%) 0.356566

DPC count (execution time <250 µs): 1910988
DPC count (execution time 250-500 µs): 0
DPC count (execution time 500-999 µs): 0
DPC count (execution time 1000-1999 µs): 0
DPC count (execution time 2000-3999 µs): 0
DPC count (execution time >=4000 µs): 0


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REPORTED HARD PAGEFAULTS
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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.

NOTE: some processes were hit by hard pagefaults. If these were programs producing audio, they are likely to interrupt the audio stream resulting in dropouts, clicks and pops. Check the Processes tab to see which programs were hit.

Process with highest pagefault count: latmon.exe

Total number of hard pagefaults 14
Hard pagefault count of hardest hit process: 7
Highest hard pagefault resolution time (µs): 15075.355819
Total time spent in hard pagefaults (%): 0.005682
Number of processes hit: 4


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PER CPU DATA
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CPU 0 Interrupt cycle time (s): 6.890317
CPU 0 ISR highest execution time (µs): 82.147979
CPU 0 ISR total execution time (s): 0.895853
CPU 0 ISR count: 488743
CPU 0 DPC highest execution time (µs): 128.651170
CPU 0 DPC total execution time (s): 4.021318
CPU 0 DPC count: 1841709
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CPU 1 Interrupt cycle time (s): 4.071892
CPU 1 ISR highest execution time (µs): 0.0
CPU 1 ISR total execution time (s): 0.0
CPU 1 ISR count: 0
CPU 1 DPC highest execution time (µs): 209.018232
CPU 1 DPC total execution time (s): 0.051366
CPU 1 DPC count: 16600
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CPU 2 Interrupt cycle time (s): 3.199694
CPU 2 ISR highest execution time (µs): 0.0
CPU 2 ISR total execution time (s): 0.0
CPU 2 ISR count: 0
CPU 2 DPC highest execution time (µs): 164.252507
CPU 2 DPC total execution time (s): 0.046154
CPU 2 DPC count: 14273
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CPU 3 Interrupt cycle time (s): 2.992678
CPU 3 ISR highest execution time (µs): 0.0
CPU 3 ISR total execution time (s): 0.0
CPU 3 ISR count: 0
CPU 3 DPC highest execution time (µs): 172.776360
CPU 3 DPC total execution time (s): 0.083497
CPU 3 DPC count: 38406
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[fireberd]

I missed this post. I usually try to answer audio questions if no one else has answered them.

Run the DPC Latency Checker and see what that shows up. I'm not a fan of the Resplendence as I ran it on my recording studio system that has no problems and it showed many problems.

Stuttering/Dropouts, etc, have been reported problems with Vista/Win 7. There is no "one fix" for the problem. Sound Drivers and Video Drivers have been known causes. Wi-Fi is another known cause. The sound is on a shared Interrupt (IRQ) with a higher priority device and can be interrupted by the higher priority device and cause stuttering.

What do you have listed in the Device Manager, Sound video and game controller section? Post a screen shot of that. http://www.sevenforums.com/tutorials/9733-screenshots-files-upload-post-seven-forums.html

Also, please fill in the "My System Spec's" (see my listing as an example) so we know what we are dealing with. It helps us to try and help you.