Hey guys,
Recently, I bought a new USB sound card for audio production. Before, I used a Creative Xi-Fi sound card, but since I upgraded speakers, I needed to buy a new card.
Only problem is that when I plug my speakers into the sound card, I hear an annoying buzz and crackle, which seem to occasionally correlate to system tasks such as dragging my mouse, typing, changing windows, etc.
I installed latencymon and received the following results:
I've tried a million different things, i.e. disabling different devices in device manager, reinstalling drivers, changing my power settings, fooling around in my BIOS, cleaning my registry, changing power outlets, etc. and I'm still stumped.
Any ideas?
Recently, I bought a new USB sound card for audio production. Before, I used a Creative Xi-Fi sound card, but since I upgraded speakers, I needed to buy a new card.
Only problem is that when I plug my speakers into the sound card, I hear an annoying buzz and crackle, which seem to occasionally correlate to system tasks such as dragging my mouse, typing, changing windows, etc.
I installed latencymon and received the following results:
Code:
_________________________________________________________________________________________________________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 0:09:20 (h:mm:ss) on all processors.
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SYSTEM INFORMATION
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Computer name: ALEX-PC
OS version: Windows 7 Service Pack 1, 6.1, build: 7601 (x64)
Hardware: GA-890GPA-UD3H, Gigabyte Technology Co., Ltd.
CPU: AuthenticAMD AMD Phenom(tm) II X4 955 Processor
Logical processors: 4
Processor groups: 1
RAM: 8189 MB total
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CPU SPEED
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Reported CPU speed: 3214.0 MHz
Measured CPU speed: 4190.0 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): 23377.157938
Average measured interrupt to process latency (µs): 3.232513
Highest measured interrupt to DPC latency (µs): 713.312664
Average measured interrupt to DPC latency (µs): 0.823045
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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): 1217.441195
Driver with highest ISR routine execution time: dxgkrnl.sys - DirectX Graphics Kernel, Microsoft Corporation
Highest reported total ISR routine time (%): 0.174014
Driver with highest ISR total time: hal.dll - Hardware Abstraction Layer DLL, Microsoft Corporation
Total time spent in ISRs (%) 0.361668
ISR count (execution time <250 µs): 1585129
ISR count (execution time 250-500 µs): 0
ISR count (execution time 500-999 µs): 55
ISR count (execution time 1000-1999 µs): 9
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): 1229.886745
Driver with highest DPC routine execution time: dxgkrnl.sys - DirectX Graphics Kernel, Microsoft Corporation
Highest reported total DPC routine time (%): 0.112781
Driver with highest DPC total execution time: ataport.SYS - ATAPI Driver Extension, Microsoft Corporation
Total time spent in DPCs (%) 0.351795
DPC count (execution time <250 µs): 2447213
DPC count (execution time 250-500 µs): 0
DPC count (execution time 500-999 µs): 122
DPC count (execution time 1000-1999 µs): 9
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: coreserviceshell.exe
Total number of hard pagefaults 48442
Hard pagefault count of hardest hit process: 21613
Highest hard pagefault resolution time (µs): 1796703.132234
Total time spent in hard pagefaults (%): 30.477267
Number of processes hit: 26
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PER CPU DATA
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CPU 0 Interrupt cycle time (s): 9.720553
CPU 0 ISR highest execution time (µs): 1146.289981
CPU 0 ISR total execution time (s): 3.917672
CPU 0 ISR count: 1137256
CPU 0 DPC highest execution time (µs): 206.124144
CPU 0 DPC total execution time (s): 2.12440
CPU 0 DPC count: 1958552
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CPU 1 Interrupt cycle time (s): 3.483943
CPU 1 ISR highest execution time (µs): 135.062539
CPU 1 ISR total execution time (s): 0.031564
CPU 1 ISR count: 2484
CPU 1 DPC highest execution time (µs): 1160.303049
CPU 1 DPC total execution time (s): 0.064766
CPU 1 DPC count: 5143
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CPU 2 Interrupt cycle time (s): 3.950232
CPU 2 ISR highest execution time (µs): 1183.196017
CPU 2 ISR total execution time (s): 0.255413
CPU 2 ISR count: 20735
CPU 2 DPC highest execution time (µs): 1058.443373
CPU 2 DPC total execution time (s): 0.367281
CPU 2 DPC count: 25717
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CPU 3 Interrupt cycle time (s): 13.154745
CPU 3 ISR highest execution time (µs): 1217.441195
CPU 3 ISR total execution time (s): 3.899427
CPU 3 ISR count: 424718
CPU 3 DPC highest execution time (µs): 1229.886745
CPU 3 DPC total execution time (s): 5.326398
CPU 3 DPC count: 457932
_________________________________________________________________________________________________________I've tried a million different things, i.e. disabling different devices in device manager, reinstalling drivers, changing my power settings, fooling around in my BIOS, cleaning my registry, changing power outlets, etc. and I'm still stumped.
Any ideas?
