USB hub, 1 port 4 W 2.4 R 14 _________________________________________________________________________________________________________ CONCLUSION _________________________________________________________________________________________________________ Your system appears to be suitable for handling real-time audio and other tasks without dropouts. LatencyMon has been analyzing your system for 0:00:20 (h:mm:ss) on all processors. _________________________________________________________________________________________________________ SYSTEM INFORMATION _________________________________________________________________________________________________________ Computer name: NIV OS version: Windows 7 Service Pack 1, 6.1, build: 7601 (x64) Hardware: ASUSTeK Computer INC., P6T CPU: GenuineIntel Intel(R) Core(TM) i7 CPU 920 @ 2.67GHz Logical processors: 8 Processor groups: 1 RAM: 12278 MB total _________________________________________________________________________________________________________ CPU SPEED _________________________________________________________________________________________________________ Reported CPU speed: 2672 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. _________________________________________________________________________________________________________ MEASURED INTERRUPT TO USER PROCESS LATENCIES _________________________________________________________________________________________________________ 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): 433.693876 Average measured interrupt to process latency (µs): 2.820795 Highest measured interrupt to DPC latency (µs): 431.778267 Average measured interrupt to DPC latency (µs): 1.038883 _________________________________________________________________________________________________________ REPORTED ISRs _________________________________________________________________________________________________________ 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): 65.234281 Driver with highest ISR routine execution time: dxgkrnl.sys - DirectX Graphics Kernel, Microsoft Corporation Highest reported total ISR routine time (%): 0.048401 Driver with highest ISR total time: SCSIPORT.SYS - SCSI Port Driver, Microsoft Corporation Total time spent in ISRs (%) 0.090145 ISR count (execution time <250 µs): 44779 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 _________________________________________________________________________________________________________ REPORTED DPCs _________________________________________________________________________________________________________ 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): 460.831587 Driver with highest DPC routine execution time: ndis.sys - NDIS 6.20 driver, Microsoft Corporation Highest reported total DPC routine time (%): 0.131293 Driver with highest DPC total execution time: Wdf01000.sys - Kernel Mode Driver Framework Runtime, Microsoft Corporation Total time spent in DPCs (%) 0.249452 DPC count (execution time <250 µs): 116699 DPC count (execution time 250-500 µs): 0 DPC count (execution time 500-999 µs): 11 DPC count (execution time 1000-1999 µs): 0 DPC count (execution time 2000-3999 µs): 0 DPC count (execution time >=4000 µs): 0 _________________________________________________________________________________________________________ REPORTED HARD PAGEFAULTS _________________________________________________________________________________________________________ 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: sdxhelper.exe Total number of hard pagefaults 262 Hard pagefault count of hardest hit process: 61 Number of processes hit: 5 _________________________________________________________________________________________________________ PER CPU DATA _________________________________________________________________________________________________________ CPU 0 Interrupt cycle time (s): 0.582202 CPU 0 ISR highest execution time (µs): 16.134731 CPU 0 ISR total execution time (s): 0.116818 CPU 0 ISR count: 39124 CPU 0 DPC highest execution time (µs): 460.831587 CPU 0 DPC total execution time (s): 0.296494 CPU 0 DPC count: 97440 _________________________________________________________________________________________________________ CPU 1 Interrupt cycle time (s): 0.104601 CPU 1 ISR highest execution time (µs): 12.651198 CPU 1 ISR total execution time (s): 0.001316 CPU 1 ISR count: 205 CPU 1 DPC highest execution time (µs): 16.821856 CPU 1 DPC total execution time (s): 0.000478 CPU 1 DPC count: 126 _________________________________________________________________________________________________________ CPU 2 Interrupt cycle time (s): 0.220326 CPU 2 ISR highest execution time (µs): 65.234281 CPU 2 ISR total execution time (s): 0.011257 CPU 2 ISR count: 1132 CPU 2 DPC highest execution time (µs): 80.354416 CPU 2 DPC total execution time (s): 0.010250 CPU 2 DPC count: 1102 _________________________________________________________________________________________________________ CPU 3 Interrupt cycle time (s): 0.084735 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): 0.0 CPU 3 DPC total execution time (s): 0.0 CPU 3 DPC count: 0 _________________________________________________________________________________________________________ CPU 4 Interrupt cycle time (s): 0.103705 CPU 4 ISR highest execution time (µs): 0.0 CPU 4 ISR total execution time (s): 0.0 CPU 4 ISR count: 0 CPU 4 DPC highest execution time (µs): 13.476048 CPU 4 DPC total execution time (s): 0.000391 CPU 4 DPC count: 187 _________________________________________________________________________________________________________ CPU 5 Interrupt cycle time (s): 0.079208 CPU 5 ISR highest execution time (µs): 0.0 CPU 5 ISR total execution time (s): 0.0 CPU 5 ISR count: 0 CPU 5 DPC highest execution time (µs): 0.0 CPU 5 DPC total execution time (s): 0.0 CPU 5 DPC count: 0 _________________________________________________________________________________________________________ CPU 6 Interrupt cycle time (s): 0.059966 CPU 6 ISR highest execution time (µs): 6.676647 CPU 6 ISR total execution time (s): 0.000043 CPU 6 ISR count: 12 CPU 6 DPC highest execution time (µs): 9.687874 CPU 6 DPC total execution time (s): 0.000752 CPU 6 DPC count: 336 _________________________________________________________________________________________________________ CPU 7 Interrupt cycle time (s): 0.232386 CPU 7 ISR highest execution time (µs): 8.806886 CPU 7 ISR total execution time (s): 0.016926 CPU 7 ISR count: 4306 CPU 7 DPC highest execution time (µs): 40.18750 CPU 7 DPC total execution time (s): 0.096645 CPU 7 DPC count: 17519 _________________________________________________________________________________________________________