stdragon :
Try this
http://www.resplendence.com/latencymon
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CONCLUSION
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Your system appears to be having trouble handling real-time audio and other tasks. You are likely to experience buffer underruns appearing as drop outs, clicks or pops. One or more DPC routines that belong to a driver running in your system appear to be executing for too long. Also one or more ISR routines that belong to a driver running in your system appear to be executing for too long. At least one detected problem appears to be network related. In case you are using a WLAN adapter, try disabling it to get better results. 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 0:04:08 (h:mm:ss) on all processors.
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SYSTEM INFORMATION
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Computer name: LUKE-PC
OS version: Windows 7 Service Pack 1, 6.1, build: 7601 (x64)
Hardware: DT1410, Advent, Foxconn , H61MXL/H61MXL-K
CPU: GenuineIntel Intel(R) Core(TM) i5-2320 CPU @ 3.00GHz
Logical processors: 4
Processor groups: 1
RAM: 16103 MB total
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CPU SPEED
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Reported CPU speed: 2993 MHz
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): 48199.101988
Average measured interrupt to process latency (µs): 3.562799
Highest measured interrupt to DPC latency (µs): 48196.023092
Average measured interrupt to DPC latency (µs): 0.898836
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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): 24179.798530
Driver with highest ISR routine execution time: dxgkrnl.sys - DirectX Graphics Kernel, Microsoft Corporation
Highest reported total ISR routine time (%): 0.105424
Driver with highest ISR total time: dxgkrnl.sys - DirectX Graphics Kernel, Microsoft Corporation
Total time spent in ISRs (%) 0.227280
ISR count (execution time <250 µs): 522146
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): 24098.690277
Driver with highest DPC routine execution time: USBPORT.SYS - USB 1.1 & 2.0 Port Driver, Microsoft Corporation
Highest reported total DPC routine time (%): 0.395237
Driver with highest DPC total execution time: USBPORT.SYS - USB 1.1 & 2.0 Port Driver, Microsoft Corporation
Total time spent in DPCs (%) 0.669082
DPC count (execution time <250 µs): 2081265
DPC count (execution time 250-500 µs): 0
DPC count (execution time 500-999 µs): 1
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: chrome.exe
Total number of hard pagefaults 220
Hard pagefault count of hardest hit process: 110
Number of processes hit: 5
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PER CPU DATA
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CPU 0 Interrupt cycle time (s): 11.400680
CPU 0 ISR highest execution time (µs): 24179.798530
CPU 0 ISR total execution time (s): 2.258830
CPU 0 ISR count: 522151
CPU 0 DPC highest execution time (µs): 24098.690277
CPU 0 DPC total execution time (s): 6.292692
CPU 0 DPC count: 1995417
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CPU 1 Interrupt cycle time (s): 1.139461
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): 53.275309
CPU 1 DPC total execution time (s): 0.023993
CPU 1 DPC count: 6496
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CPU 2 Interrupt cycle time (s): 2.415528
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): 102.716672
CPU 2 DPC total execution time (s): 0.189155
CPU 2 DPC count: 39697
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CPU 3 Interrupt cycle time (s): 1.804125
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): 90.654527
CPU 3 DPC total execution time (s): 0.143849
CPU 3 DPC count: 39658
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