// Edit by moderator: start
Hi, I have seen this topic (click) and I have the same problem with my real-time audio.
My latency result is:
// Edit by moderator: end
_________________________________________________________________________________________________________
CONCLUSION
_________________________________________________________________________________________________________
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 0:01:19 (h:mm:ss) on all processors.
_________________________________________________________________________________________________________
SYSTEM INFORMATION
_________________________________________________________________________________________________________
Computer name: DESKTOP-29PT4IG
OS version: Windows 10 , 10.0, build: 19042 (x64)
Hardware: 81SX, LENOVO, LNVNB161216
CPU: GenuineIntel Intel(R) Core(TM) i7-9750H CPU @ 2.60GHz
Logical processors: 12
Processor groups: 1
RAM: 16303 MB total
_________________________________________________________________________________________________________
CPU SPEED
_________________________________________________________________________________________________________
Reported CPU speed: 2592 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.
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.
_________________________________________________________________________________________________________
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): 6002.20
Average measured interrupt to process latency (µs): 13.834399
Highest measured interrupt to DPC latency (µs): 5978.0
Average measured interrupt to DPC latency (µs): 7.034737
_________________________________________________________________________________________________________
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): 5772.192130
Driver with highest ISR routine execution time: HDAudBus.sys - High Definition Audio Bus Driver, Microsoft Corporation
Highest reported total ISR routine time (%): 0.007131
Driver with highest ISR total time: HDAudBus.sys - High Definition Audio Bus Driver, Microsoft Corporation
Total time spent in ISRs (%) 0.009435
ISR count (execution time <250 µs): 7300
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): 1
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): 5891.913580
Driver with highest DPC routine execution time: nvlddmkm.sys - NVIDIA Windows Kernel Mode Driver, Version 457.30 , NVIDIA Corporation
Highest reported total DPC routine time (%): 0.040031
Driver with highest DPC total execution time: nvlddmkm.sys - NVIDIA Windows Kernel Mode Driver, Version 457.30 , NVIDIA Corporation
Total time spent in DPCs (%) 0.097271
DPC count (execution time <250 µs): 56673
DPC count (execution time 250-500 µs): 0
DPC count (execution time 500-999 µs): 82
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: chrome.exe
Total number of hard pagefaults 2
Hard pagefault count of hardest hit process: 1
Number of processes hit: 2
_________________________________________________________________________________________________________
PER CPU DATA
_________________________________________________________________________________________________________
CPU 0 Interrupt cycle time (s): 4.913442
CPU 0 ISR highest execution time (µs): 5772.192130
CPU 0 ISR total execution time (s): 0.063825
CPU 0 ISR count: 4893
CPU 0 DPC highest execution time (µs): 5891.913580
CPU 0 DPC total execution time (s): 0.872860
CPU 0 DPC count: 52202
_________________________________________________________________________________________________________
CPU 1 Interrupt cycle time (s): 0.837724
CPU 1 ISR highest execution time (µs): 131.117284
CPU 1 ISR total execution time (s): 0.025176
CPU 1 ISR count: 2356
CPU 1 DPC highest execution time (µs): 172.712191
CPU 1 DPC total execution time (s): 0.009568
CPU 1 DPC count: 1147
_________________________________________________________________________________________________________
CPU 2 Interrupt cycle time (s): 0.866566
CPU 2 ISR highest execution time (µs): 29.064815
CPU 2 ISR total execution time (s): 0.000463
CPU 2 ISR count: 54
CPU 2 DPC highest execution time (µs): 81.046296
CPU 2 DPC total execution time (s): 0.006564
CPU 2 DPC count: 667
_________________________________________________________________________________________________________
CPU 3 Interrupt cycle time (s): 0.762232
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): 156.200617
CPU 3 DPC total execution time (s): 0.011825
CPU 3 DPC count: 696
_________________________________________________________________________________________________________
CPU 4 Interrupt cycle time (s): 0.648509
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): 180.913580
CPU 4 DPC total execution time (s): 0.010266
CPU 4 DPC count: 744
_________________________________________________________________________________________________________
CPU 5 Interrupt cycle time (s): 0.574044
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): 42.898148
CPU 5 DPC total execution time (s): 0.000206
CPU 5 DPC count: 14
_________________________________________________________________________________________________________
CPU 6 Interrupt cycle time (s): 0.694737
CPU 6 ISR highest execution time (µs): 0.0
CPU 6 ISR total execution time (s): 0.0
CPU 6 ISR count: 0
CPU 6 DPC highest execution time (µs): 135.327160
CPU 6 DPC total execution time (s): 0.003208
CPU 6 DPC count: 647
_________________________________________________________________________________________________________
CPU 7 Interrupt cycle time (s): 0.544773
CPU 7 ISR highest execution time (µs): 0.0
CPU 7 ISR total execution time (s): 0.0
CPU 7 ISR count: 0
CPU 7 DPC highest execution time (µs): 39.615741
CPU 7 DPC total execution time (s): 0.000189
CPU 7 DPC count: 24
_________________________________________________________________________________________________________
CPU 8 Interrupt cycle time (s): 0.554267
CPU 8 ISR highest execution time (µs): 0.0
CPU 8 ISR total execution time (s): 0.0
CPU 8 ISR count: 0
CPU 8 DPC highest execution time (µs): 89.652778
CPU 8 DPC total execution time (s): 0.001634
CPU 8 DPC count: 115
_________________________________________________________________________________________________________
CPU 9 Interrupt cycle time (s): 0.468526
CPU 9 ISR highest execution time (µs): 0.0
CPU 9 ISR total execution time (s): 0.0
CPU 9 ISR count: 0
CPU 9 DPC highest execution time (µs): 4.915123
CPU 9 DPC total execution time (s): 0.000029
CPU 9 DPC count: 10
_________________________________________________________________________________________________________
CPU 10 Interrupt cycle time (s): 0.547842
CPU 10 ISR highest execution time (µs): 0.0
CPU 10 ISR total execution time (s): 0.0
CPU 10 ISR count: 0
CPU 10 DPC highest execution time (µs): 114.708333
CPU 10 DPC total execution time (s): 0.005634
CPU 10 DPC count: 460
_________________________________________________________________________________________________________
CPU 11 Interrupt cycle time (s): 0.481231
CPU 11 ISR highest execution time (µs): 0.0
CPU 11 ISR total execution time (s): 0.0
CPU 11 ISR count: 0
CPU 11 DPC highest execution time (µs): 82.746914
CPU 11 DPC total execution time (s): 0.000333
CPU 11 DPC count: 30
_________________________________________________________________________________________________________
I have a Lenovo y540, I even changed my windows and reset it from UEFI but the problem still exists.
Hi, I have seen this topic (click) and I have the same problem with my real-time audio.
My latency result is:
// Edit by moderator: end
_________________________________________________________________________________________________________
CONCLUSION
_________________________________________________________________________________________________________
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 0:01:19 (h:mm:ss) on all processors.
_________________________________________________________________________________________________________
SYSTEM INFORMATION
_________________________________________________________________________________________________________
Computer name: DESKTOP-29PT4IG
OS version: Windows 10 , 10.0, build: 19042 (x64)
Hardware: 81SX, LENOVO, LNVNB161216
CPU: GenuineIntel Intel(R) Core(TM) i7-9750H CPU @ 2.60GHz
Logical processors: 12
Processor groups: 1
RAM: 16303 MB total
_________________________________________________________________________________________________________
CPU SPEED
_________________________________________________________________________________________________________
Reported CPU speed: 2592 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.
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.
_________________________________________________________________________________________________________
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): 6002.20
Average measured interrupt to process latency (µs): 13.834399
Highest measured interrupt to DPC latency (µs): 5978.0
Average measured interrupt to DPC latency (µs): 7.034737
_________________________________________________________________________________________________________
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): 5772.192130
Driver with highest ISR routine execution time: HDAudBus.sys - High Definition Audio Bus Driver, Microsoft Corporation
Highest reported total ISR routine time (%): 0.007131
Driver with highest ISR total time: HDAudBus.sys - High Definition Audio Bus Driver, Microsoft Corporation
Total time spent in ISRs (%) 0.009435
ISR count (execution time <250 µs): 7300
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): 1
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): 5891.913580
Driver with highest DPC routine execution time: nvlddmkm.sys - NVIDIA Windows Kernel Mode Driver, Version 457.30 , NVIDIA Corporation
Highest reported total DPC routine time (%): 0.040031
Driver with highest DPC total execution time: nvlddmkm.sys - NVIDIA Windows Kernel Mode Driver, Version 457.30 , NVIDIA Corporation
Total time spent in DPCs (%) 0.097271
DPC count (execution time <250 µs): 56673
DPC count (execution time 250-500 µs): 0
DPC count (execution time 500-999 µs): 82
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: chrome.exe
Total number of hard pagefaults 2
Hard pagefault count of hardest hit process: 1
Number of processes hit: 2
_________________________________________________________________________________________________________
PER CPU DATA
_________________________________________________________________________________________________________
CPU 0 Interrupt cycle time (s): 4.913442
CPU 0 ISR highest execution time (µs): 5772.192130
CPU 0 ISR total execution time (s): 0.063825
CPU 0 ISR count: 4893
CPU 0 DPC highest execution time (µs): 5891.913580
CPU 0 DPC total execution time (s): 0.872860
CPU 0 DPC count: 52202
_________________________________________________________________________________________________________
CPU 1 Interrupt cycle time (s): 0.837724
CPU 1 ISR highest execution time (µs): 131.117284
CPU 1 ISR total execution time (s): 0.025176
CPU 1 ISR count: 2356
CPU 1 DPC highest execution time (µs): 172.712191
CPU 1 DPC total execution time (s): 0.009568
CPU 1 DPC count: 1147
_________________________________________________________________________________________________________
CPU 2 Interrupt cycle time (s): 0.866566
CPU 2 ISR highest execution time (µs): 29.064815
CPU 2 ISR total execution time (s): 0.000463
CPU 2 ISR count: 54
CPU 2 DPC highest execution time (µs): 81.046296
CPU 2 DPC total execution time (s): 0.006564
CPU 2 DPC count: 667
_________________________________________________________________________________________________________
CPU 3 Interrupt cycle time (s): 0.762232
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): 156.200617
CPU 3 DPC total execution time (s): 0.011825
CPU 3 DPC count: 696
_________________________________________________________________________________________________________
CPU 4 Interrupt cycle time (s): 0.648509
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): 180.913580
CPU 4 DPC total execution time (s): 0.010266
CPU 4 DPC count: 744
_________________________________________________________________________________________________________
CPU 5 Interrupt cycle time (s): 0.574044
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): 42.898148
CPU 5 DPC total execution time (s): 0.000206
CPU 5 DPC count: 14
_________________________________________________________________________________________________________
CPU 6 Interrupt cycle time (s): 0.694737
CPU 6 ISR highest execution time (µs): 0.0
CPU 6 ISR total execution time (s): 0.0
CPU 6 ISR count: 0
CPU 6 DPC highest execution time (µs): 135.327160
CPU 6 DPC total execution time (s): 0.003208
CPU 6 DPC count: 647
_________________________________________________________________________________________________________
CPU 7 Interrupt cycle time (s): 0.544773
CPU 7 ISR highest execution time (µs): 0.0
CPU 7 ISR total execution time (s): 0.0
CPU 7 ISR count: 0
CPU 7 DPC highest execution time (µs): 39.615741
CPU 7 DPC total execution time (s): 0.000189
CPU 7 DPC count: 24
_________________________________________________________________________________________________________
CPU 8 Interrupt cycle time (s): 0.554267
CPU 8 ISR highest execution time (µs): 0.0
CPU 8 ISR total execution time (s): 0.0
CPU 8 ISR count: 0
CPU 8 DPC highest execution time (µs): 89.652778
CPU 8 DPC total execution time (s): 0.001634
CPU 8 DPC count: 115
_________________________________________________________________________________________________________
CPU 9 Interrupt cycle time (s): 0.468526
CPU 9 ISR highest execution time (µs): 0.0
CPU 9 ISR total execution time (s): 0.0
CPU 9 ISR count: 0
CPU 9 DPC highest execution time (µs): 4.915123
CPU 9 DPC total execution time (s): 0.000029
CPU 9 DPC count: 10
_________________________________________________________________________________________________________
CPU 10 Interrupt cycle time (s): 0.547842
CPU 10 ISR highest execution time (µs): 0.0
CPU 10 ISR total execution time (s): 0.0
CPU 10 ISR count: 0
CPU 10 DPC highest execution time (µs): 114.708333
CPU 10 DPC total execution time (s): 0.005634
CPU 10 DPC count: 460
_________________________________________________________________________________________________________
CPU 11 Interrupt cycle time (s): 0.481231
CPU 11 ISR highest execution time (µs): 0.0
CPU 11 ISR total execution time (s): 0.0
CPU 11 ISR count: 0
CPU 11 DPC highest execution time (µs): 82.746914
CPU 11 DPC total execution time (s): 0.000333
CPU 11 DPC count: 30
_________________________________________________________________________________________________________
I have a Lenovo y540, I even changed my windows and reset it from UEFI but the problem still exists.
Last edited by a moderator: