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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. 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 2:10:47 (h:mm:ss) on all processors.
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SYSTEM INFORMATION
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Computer name: PC
OS version: Windows 7 Service Pack 1, 6.1, build: 7601 (x64)
Hardware: ASUSTeK COMPUTER INC., M5A97 EVO R2.0
CPU: AuthenticAMD AMD FX(tm)-8350 Eight-Core Processor
Logical processors: 8
Processor groups: 1
RAM: 16283 MB total
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CPU SPEED
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Reported CPU speed: 4334 MHz
Measured CPU speed: 1 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.
WARNING: the CPU speed that was measured is only a fraction of the CPU speed reported. Your CPUs may be throttled back due to variable speed settings and thermal issues. It is suggested that you run a utility which reports your actual CPU frequency and temperature.
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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): 71128,189827
Average measured interrupt to process latency (µs): 8,916683
Highest measured interrupt to DPC latency (µs): 71071,964250
Average measured interrupt to DPC latency (µs): 3,998280
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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): 3180,781726
Driver with highest ISR routine execution time: hal.dll - Hardware Abstraction Layer DLL, Microsoft Corporation
Highest reported total ISR routine time (%): 0,099607
Driver with highest ISR total time: hal.dll - Hardware Abstraction Layer DLL, Microsoft Corporation
Total time spent in ISRs (%) 0,118831
ISR count (execution time <250 µs): 9682804
ISR count (execution time 250-500 µs): 0
ISR count (execution time 500-999 µs): 90
ISR count (execution time 1000-1999 µs): 85
ISR count (execution time 2000-3999 µs): 4
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): 74332,477388
Driver with highest DPC routine execution time: asstor64.sys - Asmedia 106x SATA Host Controller Driver, Asmedia Technology
Highest reported total DPC routine time (%): 0,206443
Driver with highest DPC total execution time: USBPORT.SYS - USB 1.1 & 2.0-Porttreiber, Microsoft Corporation
Total time spent in DPCs (%) 0,492435
DPC count (execution time <250 µs): 51901658
DPC count (execution time 250-500 µs): 0
DPC count (execution time 500-999 µs): 139
DPC count (execution time 1000-1999 µs): 13
DPC count (execution time 2000-3999 µs): 14
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: firefox.exe
Total number of hard pagefaults 4276
Hard pagefault count of hardest hit process: 2661
Highest hard pagefault resolution time (µs): 116248,309183
Total time spent in hard pagefaults (%): 0,022205
Number of processes hit: 15
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PER CPU DATA
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CPU 0 Interrupt cycle time (s): 334,932470
CPU 0 ISR highest execution time (µs): 3180,781726
CPU 0 ISR total execution time (s): 63,974153
CPU 0 ISR count: 8007506
CPU 0 DPC highest execution time (µs): 71266,811029
CPU 0 DPC total execution time (s): 121,444572
CPU 0 DPC count: 42050745
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CPU 1 Interrupt cycle time (s): 372,25960
CPU 1 ISR highest execution time (µs): 89,245039
CPU 1 ISR total execution time (s): 1,141953
CPU 1 ISR count: 195495
CPU 1 DPC highest execution time (µs): 71141,073835
CPU 1 DPC total execution time (s): 19,112796
CPU 1 DPC count: 1056509
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CPU 2 Interrupt cycle time (s): 240,634182
CPU 2 ISR highest execution time (µs): 83,407245
CPU 2 ISR total execution time (s): 1,151341
CPU 2 ISR count: 182940
CPU 2 DPC highest execution time (µs): 74332,477388
CPU 2 DPC total execution time (s): 18,049261
CPU 2 DPC count: 1067461
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CPU 3 Interrupt cycle time (s): 213,037674
CPU 3 ISR highest execution time (µs): 82,574758
CPU 3 ISR total execution time (s): 1,098677
CPU 3 ISR count: 179613
CPU 3 DPC highest execution time (µs): 71141,815413
CPU 3 DPC total execution time (s): 17,747467
CPU 3 DPC count: 961170
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CPU 4 Interrupt cycle time (s): 357,636064
CPU 4 ISR highest execution time (µs): 104,445316
CPU 4 ISR total execution time (s): 1,117446
CPU 4 ISR count: 184399
CPU 4 DPC highest execution time (µs): 71129,051454
CPU 4 DPC total execution time (s): 28,467535
CPU 4 DPC count: 1585405
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CPU 5 Interrupt cycle time (s): 329,773275
CPU 5 ISR highest execution time (µs): 3073,759575
CPU 5 ISR total execution time (s): 1,116479
CPU 5 ISR count: 185526
CPU 5 DPC highest execution time (µs): 71159,662437
CPU 5 DPC total execution time (s): 20,915981
CPU 5 DPC count: 1005335
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CPU 6 Interrupt cycle time (s): 335,038343
CPU 6 ISR highest execution time (µs): 2072,254269
CPU 6 ISR total execution time (s): 1,466155
CPU 6 ISR count: 233546
CPU 6 DPC highest execution time (µs): 74183,118366
CPU 6 DPC total execution time (s): 27,602882
CPU 6 DPC count: 1341919
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CPU 7 Interrupt cycle time (s): 360,578580
CPU 7 ISR highest execution time (µs): 114,618366
CPU 7 ISR total execution time (s): 3,536668
CPU 7 ISR count: 513958
CPU 7 DPC highest execution time (µs): 71212,279649
CPU 7 DPC total execution time (s): 55,813455
CPU 7 DPC count: 2834518