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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 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 0:17:43 (h:mm:ss) on all processors.
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SYSTEM INFORMATION
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Computer name: CHAOSKLAUS-ACER
OS version: Windows 7 , 6.1, build: 7600 (x64)
Hardware: Aspire 5820TG, Acer, ZR7B
CPU: GenuineIntel Intel(R) Core(TM) i7 CPU M 620 @ 2.67GHz
Logical processors: 4
Processor groups: 1
RAM: 3766 MB total
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CPU SPEED
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Reported CPU speed: 2660,0 MHz
Measured CPU speed: 3988,0 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): 38247,991978
Average measured interrupt to process latency (µs): 5,530683
Highest measured interrupt to DPC latency (µs): 38231,053950
Average measured interrupt to DPC latency (µs): 1,455195
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MEASURED SMI, IPI AND CPU STALLS
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The SMI, IPI and CPU stalls value represents the highest measured interval that a CPU did not respond while having its maskable interrupts disabled.
Highest measured SMI or CPU stall (µs) 45,809667
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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): 156,793609
Driver with highest ISR routine execution time: i8042prt.sys - i8042-Anschlusstreiber, Microsoft Corporation
Highest reported total ISR routine time (%): 0,040225
Driver with highest ISR total time: hal.dll - Hardware Abstraction Layer DLL, Microsoft Corporation
Total time spent in ISRs (%) 0,116292
ISR count (execution time <250 µs): 1401827
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): 485,189474
Driver with highest DPC routine execution time: USBPORT.SYS - USB 1.1 & 2.0-Porttreiber, Microsoft Corporation
Highest reported total DPC routine time (%): 0,240462
Driver with highest DPC total execution time: USBPORT.SYS - USB 1.1 & 2.0-Porttreiber, Microsoft Corporation
Total time spent in DPCs (%) 0,560814
DPC count (execution time <250 µs): 6283245
DPC count (execution time 250-500 µs): 0
DPC count (execution time 500-999 µs): 62
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: ccc.exe
Total number of hard pagefaults 108
Hard pagefault count of hardest hit process: 33
Highest hard pagefault resolution time (µs): 71740,026316
Total time spent in hard pagefaults (%): 0,004599
Number of processes hit: 8
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PER CPU DATA
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CPU 0 Interrupt cycle time (s): 32,467792
CPU 0 ISR highest execution time (µs): 154,863910
CPU 0 ISR total execution time (s): 2,613269
CPU 0 ISR count: 1140380
CPU 0 DPC highest execution time (µs): 298,423684
CPU 0 DPC total execution time (s): 12,671029
CPU 0 DPC count: 5672900
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CPU 1 Interrupt cycle time (s): 19,273632
CPU 1 ISR highest execution time (µs): 156,793609
CPU 1 ISR total execution time (s): 0,942929
CPU 1 ISR count: 87680
CPU 1 DPC highest execution time (µs): 444,543609
CPU 1 DPC total execution time (s): 3,749038
CPU 1 DPC count: 183590
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CPU 2 Interrupt cycle time (s): 11,369160
CPU 2 ISR highest execution time (µs): 106,612406
CPU 2 ISR total execution time (s): 0,669008
CPU 2 ISR count: 87406
CPU 2 DPC highest execution time (µs): 332,416541
CPU 2 DPC total execution time (s): 3,594311
CPU 2 DPC count: 225136
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CPU 3 Interrupt cycle time (s): 58,489021
CPU 3 ISR highest execution time (µs): 126,633083
CPU 3 ISR total execution time (s): 0,723777
CPU 3 ISR count: 86361
CPU 3 DPC highest execution time (µs): 485,189474
CPU 3 DPC total execution time (s): 3,851849
CPU 3 DPC count: 201681
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