Windows 10: High latency Issues in win 10

Hi, i m using win10 1903 with following configuration:


OS Name Microsoft Windows 10 Home Single Language
Version 10.0.18362 Build 18362
Other OS Description Not Available
OS Manufacturer Microsoft Corporation
System Name SHANKS
System Manufacturer Dell Inc.
System Model Inspiron 5379
System Type x64-based PC
System SKU 0804
Processor Intel(R) Core(TM) i5-8250U CPU @ 1.60GHz, 1800 Mhz, 4 Core(s), 8 Logical Processor(s)
BIOS Version/Date Dell Inc. 1.12.0, 5/9/2019
SMBIOS Version 3.0
Embedded Controller Version 255.255
BIOS Mode UEFI
BaseBoard Manufacturer Dell Inc.
BaseBoard Product 006G74
BaseBoard Version A00
Platform Role Mobile
Secure Boot State On
PCR7 Configuration Binding Not Possible
Windows Directory C:\WINDOWS
System Directory C:\WINDOWS\system32
Boot Device \Device\HarddiskVolume1
Locale United States
Hardware Abstraction Layer Version = "10.0.18362.267"
User Name SHANKS\Monsieur
Time Zone Nepal Standard Time
Installed Physical Memory (RAM) 8.00 GB
Total Physical Memory 7.84 GB
Available Physical Memory 1.08 GB
Total Virtual Memory 16.8 GB
Available Virtual Memory 8.77 GB
Page File Space 9.00 GB
Page File C:\pagefile.sys
Kernel DMA Protection Off
Virtualization-based security Not enabled
Device Encryption Support Reasons for failed automatic device encryption: TPM is not usable, PCR7 binding is not supported, TPM is not usable
Hyper-V - VM Monitor Mode Extensions Yes
Hyper-V - Second Level Address Translation Extensions Yes
Hyper-V - Virtualization Enabled in Firmware Yes
Hyper-V - Data Execution Protection Yes


Sometimes i face video and audio stuttering. And latency mon showed following results:


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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. At least one detected problem appears to be network related. In case you are using a WLAN adapter, try disabling it to get better results. 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 1:31:06 (h:mm:ss) on all processors.


_________________________________________________________________________________________________________
SYSTEM INFORMATION
_________________________________________________________________________________________________________
Computer name: SHANKS
OS version: Windows 10 , 10.0, version 1903, build: 18362 (x64)
Hardware: Inspiron 5379, Dell Inc., 006G74
CPU: GenuineIntel Intel(R) Core(TM) i5-8250U CPU @ 1.60GHz
Logical processors: 8
Processor groups: 1
RAM: 8025 MB total


_________________________________________________________________________________________________________
CPU SPEED
_________________________________________________________________________________________________________
Reported CPU speed: 180 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): 7633.40
Average measured interrupt to process latency (µs): 21.753044

Highest measured interrupt to DPC latency (µs): 7570.50
Average measured interrupt to DPC latency (µs): 6.119309


_________________________________________________________________________________________________________
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): 1716.188889
Driver with highest ISR routine execution time: ACPI.sys - ACPI Driver for NT, Microsoft Corporation

Highest reported total ISR routine time (%): 0.033181
Driver with highest ISR total time: Wdf01000.sys - Kernel Mode Driver Framework Runtime, Microsoft Corporation

Total time spent in ISRs (%) 0.038321

ISR count (execution time <250 µs): 971639
ISR count (execution time 250-500 µs): 0
ISR count (execution time 500-999 µs): 33
ISR count (execution time 1000-1999 µs): 2
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): 16722.945556
Driver with highest DPC routine execution time: ndis.sys - Network Driver Interface Specification (NDIS), Microsoft Corporation

Highest reported total DPC routine time (%): 0.232475
Driver with highest DPC total execution time: Wdf01000.sys - Kernel Mode Driver Framework Runtime, Microsoft Corporation

Total time spent in DPCs (%) 0.420751

DPC count (execution time <250 µs): 6643445
DPC count (execution time 250-500 µs): 0
DPC count (execution time 500-999 µs): 66148
DPC count (execution time 1000-1999 µs): 5705
DPC count (execution time 2000-3999 µs): 1390
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: wpa.exe

Total number of hard pagefaults 52632
Hard pagefault count of hardest hit process: 6068
Number of processes hit: 163


_________________________________________________________________________________________________________
PER CPU DATA
_________________________________________________________________________________________________________
CPU 0 Interrupt cycle time (s): 384.219340
CPU 0 ISR highest execution time (µs): 1716.188889
CPU 0 ISR total execution time (s): 15.110935
CPU 0 ISR count: 887489
CPU 0 DPC highest execution time (µs): 16722.945556
CPU 0 DPC total execution time (s): 149.038771
CPU 0 DPC count: 5774395
_________________________________________________________________________________________________________
CPU 1 Interrupt cycle time (s): 183.929629
CPU 1 ISR highest execution time (µs): 588.416667
CPU 1 ISR total execution time (s): 1.391733
CPU 1 ISR count: 74049
CPU 1 DPC highest execution time (µs): 5689.542222
CPU 1 DPC total execution time (s): 11.292813
CPU 1 DPC count: 155616
_________________________________________________________________________________________________________
CPU 2 Interrupt cycle time (s): 112.922849
CPU 2 ISR highest execution time (µs): 223.199444
CPU 2 ISR total execution time (s): 0.212805
CPU 2 ISR count: 8135
CPU 2 DPC highest execution time (µs): 5632.270
CPU 2 DPC total execution time (s): 6.225445
CPU 2 DPC count: 160995
_________________________________________________________________________________________________________
CPU 3 Interrupt cycle time (s): 85.240954
CPU 3 ISR highest execution time (µs): 322.6350
CPU 3 ISR total execution time (s): 0.038689
CPU 3 ISR count: 1641
CPU 3 DPC highest execution time (µs): 5625.634444
CPU 3 DPC total execution time (s): 0.999906
CPU 3 DPC count: 25919
_________________________________________________________________________________________________________
CPU 4 Interrupt cycle time (s): 94.498125
CPU 4 ISR highest execution time (µs): 130.048333
CPU 4 ISR total execution time (s): 0.003177
CPU 4 ISR count: 324
CPU 4 DPC highest execution time (µs): 5573.818333
CPU 4 DPC total execution time (s): 5.989105
CPU 4 DPC count: 231103
_________________________________________________________________________________________________________
CPU 5 Interrupt cycle time (s): 72.264990
CPU 5 ISR highest execution time (µs): 15.520
CPU 5 ISR total execution time (s): 0.000160
CPU 5 ISR count: 33
CPU 5 DPC highest execution time (µs): 5567.217778
CPU 5 DPC total execution time (s): 2.271063
CPU 5 DPC count: 124313
_________________________________________________________________________________________________________
CPU 6 Interrupt cycle time (s): 112.536885
CPU 6 ISR highest execution time (µs): 6.713889
CPU 6 ISR total execution time (s): 0.000010
CPU 6 ISR count: 2
CPU 6 DPC highest execution time (µs): 5518.578333
CPU 6 DPC total execution time (s): 5.812109
CPU 6 DPC count: 168253
_________________________________________________________________________________________________________
CPU 7 Interrupt cycle time (s): 80.510936
CPU 7 ISR highest execution time (µs): 2.872778
CPU 7 ISR total execution time (s): 0.000003
CPU 7 ISR count: 1
CPU 7 DPC highest execution time (µs): 5512.233333
CPU 7 DPC total execution time (s): 2.359735
CPU 7 DPC count: 76273
_________________________________________________________________________________________________________

:)

 

Windows 10 High Dpc Latency

I believe DPC Latency Checker does not support WIN 10. Please try LatencyMon and check.

I had this issue so thought of sharing.

 

Windows 10 High Latency issue


Fireberd sorry screen shots as requested

Stats




Processes:

 

Windows 10 High Latency issue


fireberd

please see screen shot for most recent run of latency mon 15min afterboot up