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Solved Windows 8.1 High DPC Latency,(annoying static sound)-Help.


Posts
26
#1
Windows 8.1 High DPCLatency,(annoying popping sound)-Help.

Hello everybody.
Before I start I just wanted to say , sorry for the bad english .
So , I have read allot of forums lately , and I found out that windows 8 and windows 8.1 weakness is its latency.
For me this proplem accoured like 2 months ago (before it didn't happend) , and yes I have messed around with the bios before that happend (now its all set to default )
Currently I am running Windows 8.1 Update 1 (made a clean install yesterday) latest updates and drivers installed (with a program called DriverEasy) , and I am also running all the default settings in bios currently . I noticed the problem , 2 months ago just like I said before , when I was watching a video on youtube . Since that , I just can't watch some videos anymore with the ANNOYING static/crackling sound , its very annoying .And it also seems that it affects CPU performance and fps drops:mad:.Like I said before , I installed Windows 8.1 yesterday , so no minor tweaks have been done to the system .

I have already tried :

-"disabledynamictick" command
-Disabling all unused devices in bios
-Disabling EIST and C1E (no improvment at all)
*-Disabling HPET Mode reduces latency , but pc isn't stable.

Here are my computer specs (its a 4 year old and its really , really bad ):

Gigabyte G41MT-S2PT(motherboard)
-Intel Celeron E3400(processor)
-Intel G41 Express Chipset(intergrated graphics card - really bad)
-4Gb 1333Mhz Kingston DDR3 Memory(ram)
-Windows 8.1 Update 1 (latest drivers and updates installed)

Here are the screenshots of DPC Latency Checker and Latencymon :

DPC Latency Checker (2minutes):

DPClATENCY.png
There are one or two yellow once a while .The values also slightly raise to yellows when I move the mouse , which I think is normal .

Latencymon (2minutes-both pitcures):

latencymonregasdg.png
The values were
raising and falling



LatencyMonDriverPage.png
The values were
raising until I stopped
the checking .

My power plan is set at High Performance (when the powerplan was set to Basic , I was getting red spikes in DPC Latency Checker) , and I am running the stock voltage in bios for the cpu 1.28750V.

I realize this might be a hardware related problem , but I am little bit more sure that this is a Windows 8.1 problem hopefully they will fix it in the Update 2 .

Help would really be appreciated.

Every reply would be helpfull...:)

-scarface0004

P.S.Sorry for the bad english.

EDIT:Today I noticed that the sound popped , when I started my computer at the windows logo.
 
Last edited:

My Computer

System One

  • OS
    Windows 8.1 Pro x64

TONSCHUH

New Member
Power User
Wynnum Australia

Posts
466
#2
Windows 8 Compatibility: The DPC latency utility runs on Windows 8 but does not show correct values. The output suggests that the Windows 8 kernel performs badly and introduces a constant latency of one millisecond, which is not the case in practice. DPCs in the Windows 8 kernel behave identical to Windows 7. The utility produces incorrect results because the implementation of kernel timers has changed in Windows 8, which causes a side effect with the measuring algorithm used by the utility. Thesycon is working on a new version of the DPC latency utility and will make it available on this site as soon as it is finished.


Source:
http://www.thesycon.de/deu/latency_check.shtml]Click

Beside that it's most likely a hardware / driver / codec - issue.

Your system is also not really powerful as well.

Windows 8 / 8.1 are not causing that kind of issues. There is only an input-lag, which can be fixed via M$-tool, when playing older games without direct-/raw-mouse-input.

:)
 

My Computer

System One

  • OS
    Windows-10-Pro-Build-11099.rs1-x64
    Computer type
    PC/Desktop
    System Manufacturer/Model Number
    Custom-Build
    CPU
    Intel Core i7 3770k @4800MHz
    Motherboard
    Asus P8Z77-V
    Memory
    G.Skill 16G(4*4G) DDR3-2400 Quad Channel [TDX] F3-2400C10Q-16GTX
    Graphics Card(s)
    2x Gigabyte GTX980-Ti-OC-STRIX-6GB in 2-Way-SLI (1408MHz | Boost: 1544MHz | Memory-Clock: 8000MHz)
    Sound Card
    OnBoard Realtek® ALC892 8-Channel High Definition Audio
    Monitor(s) Displays
    Asus VE278Q 27" Wide Led Black Full HD 2ms | Dell S2409W 24" 5ms
    Screen Resolution
    1920x1080
    Hard Drives
    - Intel 520S 240GB/SATA3/R 550MBs,W 520MBs/25nm/3.5"Kit/5yr
    - Samsung 840 EVO SATA3 500GB
    - Seagate Barracuda SATA3 1TB 7200RPM 64mb Cache
    - Seagate Barracuda SATA3 1TB 7200RPM 64mb Cache
    - Seagate Constellation SATA3 3TB 7200RPM 64mb Cache
    -
    PSU
    Corsair AX1200i
    Case
    Thermaltake Level-10 GT LCS
    Cooling
    EK H3O HFX 240mm Liquid Cooling Kit + 2x EK-480-Rads + GPU-Blocks + Gelid Extreme
    Keyboard
    Roccat Isku | Logitech G13 | XBox 360 Controller wired | Logitech Dual Action GamePad
    Mouse
    Roccat Pure Military Dessert Strike | Shogun Bros. Ballista MK-1 | Cyborg R.A.T. 7 Infection
    Internet Speed
    ADSL2+ ~15MBit/s DL | ~1MBit/s UL
    Browser
    Google Chrome
    Antivirus
    Windows Defender
    Other Info
    - Logitech Extreme 3D Pro Joystick
    - Plantronics GameCom Commander Headset
    - Logitech X-210 Speakers
    - Roccat Taito Mid-Size 5mm
    - PC-Master-Race MousePad (yellow)
Posts
26
#3


Thanks for the reply!
Like I mentioned before , this problem accoured like 2 months ago when I was watching a youtube video . Then I was also running Windows 8.1 and before then I didn't noticed the problem .It was running smooth , nice and dandy with no issues and no latency problem. Anyway as you can see from the 3rd picture , the problem is causing (I think so) "afd.sys". Is there anyway I can atleast reduce it , because the audio problem is really , REALLY annoying . I am sure that I am not the only one that is having this problem . I hope thats a Windows problem and it will be fixed in update 2 . Thanks anyway. Is there like a way to atleast decrease the latency?
 
Last edited:

My Computer

System One

  • OS
    Windows 8.1 Pro x64
Posts
26
#4
analivia belive me it isn't . Have you seen all 3 pics? The sound is popping when I watch a video on youtube . Its VERY annoying . Sometimes it also happen when I watch a movie on my computer . I really hope there is a fix in windows/bios for that ...
 

My Computer

System One

  • OS
    Windows 8.1 Pro x64
Posts
26
#5
I enabled HPET in bios (because of performance issues) . Now the bars are yellow and the latency has increased. I have enabled it back , because of system instabillity.
 

My Computer

System One

  • OS
    Windows 8.1 Pro x64

TONSCHUH

New Member
Power User
Wynnum Australia

Posts
466
#6


Thanks for the reply!
Like I mentioned before , this problem accoured like 2 months ago when I was watching a youtube video . Then I was also running Windows 8.1 and before then I didn't noticed the problem .It was running smooth , nice and dandy with no issues and no latency problem. Anyway as you can see from the 3rd picture , the problem is causing (I think so) "afd.sys". Is there anyway I can atleast reduce it , because the audio problem is really , REALLY annoying . I am sure that I am not the only one that is having this problem . I hope thats a Windows problem and it will be fixed in update 2 . Thanks anyway. Is there like a way to atleast decrease the latency?
I have here beside my high-end-rig's an emergency Dell, which is based on really low spec's around a Q8200 and I just checked today my bosses cheap Office-Dell, which is newer then mine, but we bought it for AU$549,- around 8 month ago, because his really really old XP-Box finally died beyond to be able to be repaired, without spending even more money on it and as mentioned before, your problem is on all computers non-existent, therefore I believe that the problem should / must be related to your hardware / software-(combo). I even double-checked another cheap HP-Office-PC at work (AU$399,-) and again the problem didn't exist.

Did you check your log-files via Event-Viewer ?

Maybe we can pin-point something there.

Another option would be to check your hardware via one of the following Tools-CD's/DVD's:

- Hiren's BootCD
- Ultimate Boot CD
- MTDVD (my Upload) => Info: Click

Just check step-by-step your hardware like:

- Memory
- Graphic's-Card
- Hard-Drive's
- CPU
- etc.pp.

Just post any findings and we can have a further look into it.

EDIT:

Also have a read here about HPET: Click

I had 680's in SLI and now 780-Ti's in SLI and have no stutter- / lag-issues when gaming and I play BF4, as mentioned in that thread, as well. My wife's 2600k + GTX570-OC has no issues when gaming as well.

Maybe it's Motherboard / Chipset / BIOS-related ? As you could read, there is no clear outcome in their test / findings.

:)
 
Last edited:

My Computer

System One

  • OS
    Windows-10-Pro-Build-11099.rs1-x64
    Computer type
    PC/Desktop
    System Manufacturer/Model Number
    Custom-Build
    CPU
    Intel Core i7 3770k @4800MHz
    Motherboard
    Asus P8Z77-V
    Memory
    G.Skill 16G(4*4G) DDR3-2400 Quad Channel [TDX] F3-2400C10Q-16GTX
    Graphics Card(s)
    2x Gigabyte GTX980-Ti-OC-STRIX-6GB in 2-Way-SLI (1408MHz | Boost: 1544MHz | Memory-Clock: 8000MHz)
    Sound Card
    OnBoard Realtek® ALC892 8-Channel High Definition Audio
    Monitor(s) Displays
    Asus VE278Q 27" Wide Led Black Full HD 2ms | Dell S2409W 24" 5ms
    Screen Resolution
    1920x1080
    Hard Drives
    - Intel 520S 240GB/SATA3/R 550MBs,W 520MBs/25nm/3.5"Kit/5yr
    - Samsung 840 EVO SATA3 500GB
    - Seagate Barracuda SATA3 1TB 7200RPM 64mb Cache
    - Seagate Barracuda SATA3 1TB 7200RPM 64mb Cache
    - Seagate Constellation SATA3 3TB 7200RPM 64mb Cache
    -
    PSU
    Corsair AX1200i
    Case
    Thermaltake Level-10 GT LCS
    Cooling
    EK H3O HFX 240mm Liquid Cooling Kit + 2x EK-480-Rads + GPU-Blocks + Gelid Extreme
    Keyboard
    Roccat Isku | Logitech G13 | XBox 360 Controller wired | Logitech Dual Action GamePad
    Mouse
    Roccat Pure Military Dessert Strike | Shogun Bros. Ballista MK-1 | Cyborg R.A.T. 7 Infection
    Internet Speed
    ADSL2+ ~15MBit/s DL | ~1MBit/s UL
    Browser
    Google Chrome
    Antivirus
    Windows Defender
    Other Info
    - Logitech Extreme 3D Pro Joystick
    - Plantronics GameCom Commander Headset
    - Logitech X-210 Speakers
    - Roccat Taito Mid-Size 5mm
    - PC-Master-Race MousePad (yellow)
Posts
26
#7
Thank you Tonshuh!
I found out that I had some corrupted files on windows. I ran these commands:
-sfc /scannow(found the corrupted files and fixed them)
-Dism /Online /Cleanup-Image /RestoreHealth(It also fixed some things)
Then I had to restart my computer.
-I finally ran sfc /scannow again , and it didn't found anything , so I guess it fixed some files, but the latency is the same...

Thanks for the programs will try them out , and report back.
Oh, and can you please tell me how and what should I look at Event-Viewer?

Thank you again.




 

My Computer

System One

  • OS
    Windows 8.1 Pro x64

TONSCHUH

New Member
Power User
Wynnum Australia

Posts
466
#8
Thank you Tonshuh!
I found out that I had some corrupted files on windows. I ran these commands:
-sfc /scannow(found the corrupted files and fixed them)
-Dism /Online /Cleanup-Image /RestoreHealth(It also fixed some things)
Then I had to restart my computer.
-I finally ran sfc /scannow again , and it didn't found anything , so I guess it fixed some files, but the latency is the same...

Thanks for the programs will try them out , and report back.
Oh, and can you please tell me how and what should I look at Event-Viewer?

Thank you again.
Good to hear that you found something and could fix-it. That's a start.

Look out for things like this ones here:



You can google for the Event ID numbers, like "Event ID 50" etc. and then you will find some descriptions about it.

Not every Warning / Error is something severe or a bad thing, like my 50's and 55's are related to my Drive "L:", which is my Sony MP-3-Player, which I charge via USB and which is not fully compatible with Windows-8.1, but that is not an issue for me.

Another thing you could look at, would be packet-loss in your I-Net-Connection, via tracert or ping test's.

:)
 

My Computer

System One

  • OS
    Windows-10-Pro-Build-11099.rs1-x64
    Computer type
    PC/Desktop
    System Manufacturer/Model Number
    Custom-Build
    CPU
    Intel Core i7 3770k @4800MHz
    Motherboard
    Asus P8Z77-V
    Memory
    G.Skill 16G(4*4G) DDR3-2400 Quad Channel [TDX] F3-2400C10Q-16GTX
    Graphics Card(s)
    2x Gigabyte GTX980-Ti-OC-STRIX-6GB in 2-Way-SLI (1408MHz | Boost: 1544MHz | Memory-Clock: 8000MHz)
    Sound Card
    OnBoard Realtek® ALC892 8-Channel High Definition Audio
    Monitor(s) Displays
    Asus VE278Q 27" Wide Led Black Full HD 2ms | Dell S2409W 24" 5ms
    Screen Resolution
    1920x1080
    Hard Drives
    - Intel 520S 240GB/SATA3/R 550MBs,W 520MBs/25nm/3.5"Kit/5yr
    - Samsung 840 EVO SATA3 500GB
    - Seagate Barracuda SATA3 1TB 7200RPM 64mb Cache
    - Seagate Barracuda SATA3 1TB 7200RPM 64mb Cache
    - Seagate Constellation SATA3 3TB 7200RPM 64mb Cache
    -
    PSU
    Corsair AX1200i
    Case
    Thermaltake Level-10 GT LCS
    Cooling
    EK H3O HFX 240mm Liquid Cooling Kit + 2x EK-480-Rads + GPU-Blocks + Gelid Extreme
    Keyboard
    Roccat Isku | Logitech G13 | XBox 360 Controller wired | Logitech Dual Action GamePad
    Mouse
    Roccat Pure Military Dessert Strike | Shogun Bros. Ballista MK-1 | Cyborg R.A.T. 7 Infection
    Internet Speed
    ADSL2+ ~15MBit/s DL | ~1MBit/s UL
    Browser
    Google Chrome
    Antivirus
    Windows Defender
    Other Info
    - Logitech Extreme 3D Pro Joystick
    - Plantronics GameCom Commander Headset
    - Logitech X-210 Speakers
    - Roccat Taito Mid-Size 5mm
    - PC-Master-Race MousePad (yellow)
Posts
26
#9
Forgot to ask you before , do you have HPET on in bios?
And btw my friend also has a windows 8 installed on his machine and he said that he also has noticed the sound crackling/popping here and then . But then my other friend has Windows 8.1 and he said he didn't noticed it yet.

P.S. Have you set a password for the .rar file you uploaded to mega upload ? If so could you please send me the password of the .rar file on personal messege?
 

My Computer

System One

  • OS
    Windows 8.1 Pro x64
Posts
26
#10
Oh and Event Viewer has shown 2 errors (before the cleanup I mention before) . I think they are both Internet related :
-The server {1B1F472E-3221-4826-97DB-2C2324D389AE} did not register with DCOM within the required timeout. EVENT ID :10010
-The server {BF6C1E47-86EC-4194-9CE5-13C15DCB2001} did not register with DCOM within the required timeout. EVENT ID : 10010
But like I said those showed up before the cleaning I did using CMD .
 

My Computer

System One

  • OS
    Windows 8.1 Pro x64

TONSCHUH

New Member
Power User
Wynnum Australia

Posts
466
#11
No Password for MTDVD, but it's packed with WinRAR 5.

HPET is in my Device-Manager and when I check it with "bcdedit /deletevalue useplatformclock" via elevated cmd, then I get no error, so yes it's activated and in use.

You could maybe try the K-Lite-Codec-Pack, which I use / install an all Windows-Systems, no matter if with WMC or not.

I install such basics the easy way via Ninite.

For actual drivers I go to Necacom.

You could download a Youtube-Video via tools like Youtube-Downloader etc. and have a look if you still have the issue, if you play the video locally without streaming it.

Is there something similar in the hardware or even equal with your friends computer, which has the issue as well ?

PS:

Will have to go to bed now, as I have unfortunately to get-up early for work, but will be back tomorrow.

:)
 

My Computer

System One

  • OS
    Windows-10-Pro-Build-11099.rs1-x64
    Computer type
    PC/Desktop
    System Manufacturer/Model Number
    Custom-Build
    CPU
    Intel Core i7 3770k @4800MHz
    Motherboard
    Asus P8Z77-V
    Memory
    G.Skill 16G(4*4G) DDR3-2400 Quad Channel [TDX] F3-2400C10Q-16GTX
    Graphics Card(s)
    2x Gigabyte GTX980-Ti-OC-STRIX-6GB in 2-Way-SLI (1408MHz | Boost: 1544MHz | Memory-Clock: 8000MHz)
    Sound Card
    OnBoard Realtek® ALC892 8-Channel High Definition Audio
    Monitor(s) Displays
    Asus VE278Q 27" Wide Led Black Full HD 2ms | Dell S2409W 24" 5ms
    Screen Resolution
    1920x1080
    Hard Drives
    - Intel 520S 240GB/SATA3/R 550MBs,W 520MBs/25nm/3.5"Kit/5yr
    - Samsung 840 EVO SATA3 500GB
    - Seagate Barracuda SATA3 1TB 7200RPM 64mb Cache
    - Seagate Barracuda SATA3 1TB 7200RPM 64mb Cache
    - Seagate Constellation SATA3 3TB 7200RPM 64mb Cache
    -
    PSU
    Corsair AX1200i
    Case
    Thermaltake Level-10 GT LCS
    Cooling
    EK H3O HFX 240mm Liquid Cooling Kit + 2x EK-480-Rads + GPU-Blocks + Gelid Extreme
    Keyboard
    Roccat Isku | Logitech G13 | XBox 360 Controller wired | Logitech Dual Action GamePad
    Mouse
    Roccat Pure Military Dessert Strike | Shogun Bros. Ballista MK-1 | Cyborg R.A.T. 7 Infection
    Internet Speed
    ADSL2+ ~15MBit/s DL | ~1MBit/s UL
    Browser
    Google Chrome
    Antivirus
    Windows Defender
    Other Info
    - Logitech Extreme 3D Pro Joystick
    - Plantronics GameCom Commander Headset
    - Logitech X-210 Speakers
    - Roccat Taito Mid-Size 5mm
    - PC-Master-Race MousePad (yellow)

TONSCHUH

New Member
Power User
Wynnum Australia

Posts
466
#12
Oh and Event Viewer has shown 2 errors (before the cleanup I mention before) . I think they are both Internet related :
-The server {1B1F472E-3221-4826-97DB-2C2324D389AE} did not register with DCOM within the required timeout. EVENT ID :10010
-The server {BF6C1E47-86EC-4194-9CE5-13C15DCB2001} did not register with DCOM within the required timeout. EVENT ID : 10010
But like I said those showed up before the cleaning I did using CMD .
Have a look here: Click

I don't have that one in my log's, but I use a M$-Account.

:)
 

My Computer

System One

  • OS
    Windows-10-Pro-Build-11099.rs1-x64
    Computer type
    PC/Desktop
    System Manufacturer/Model Number
    Custom-Build
    CPU
    Intel Core i7 3770k @4800MHz
    Motherboard
    Asus P8Z77-V
    Memory
    G.Skill 16G(4*4G) DDR3-2400 Quad Channel [TDX] F3-2400C10Q-16GTX
    Graphics Card(s)
    2x Gigabyte GTX980-Ti-OC-STRIX-6GB in 2-Way-SLI (1408MHz | Boost: 1544MHz | Memory-Clock: 8000MHz)
    Sound Card
    OnBoard Realtek® ALC892 8-Channel High Definition Audio
    Monitor(s) Displays
    Asus VE278Q 27" Wide Led Black Full HD 2ms | Dell S2409W 24" 5ms
    Screen Resolution
    1920x1080
    Hard Drives
    - Intel 520S 240GB/SATA3/R 550MBs,W 520MBs/25nm/3.5"Kit/5yr
    - Samsung 840 EVO SATA3 500GB
    - Seagate Barracuda SATA3 1TB 7200RPM 64mb Cache
    - Seagate Barracuda SATA3 1TB 7200RPM 64mb Cache
    - Seagate Constellation SATA3 3TB 7200RPM 64mb Cache
    -
    PSU
    Corsair AX1200i
    Case
    Thermaltake Level-10 GT LCS
    Cooling
    EK H3O HFX 240mm Liquid Cooling Kit + 2x EK-480-Rads + GPU-Blocks + Gelid Extreme
    Keyboard
    Roccat Isku | Logitech G13 | XBox 360 Controller wired | Logitech Dual Action GamePad
    Mouse
    Roccat Pure Military Dessert Strike | Shogun Bros. Ballista MK-1 | Cyborg R.A.T. 7 Infection
    Internet Speed
    ADSL2+ ~15MBit/s DL | ~1MBit/s UL
    Browser
    Google Chrome
    Antivirus
    Windows Defender
    Other Info
    - Logitech Extreme 3D Pro Joystick
    - Plantronics GameCom Commander Headset
    - Logitech X-210 Speakers
    - Roccat Taito Mid-Size 5mm
    - PC-Master-Race MousePad (yellow)
Posts
26
#13
So ...
I have installed the K-Lite-Codec-Pack(didn't see the diffrence) .I re-enabled Hpet mode and the green bars wen't to yellow bars consistently . I also noticed this , while I was playing a video on a website using flash :

Screenshot (2).png
I will take my time now and do all the stuff you mentioned before .
Thank you for the already great tips . I hope there is that "one fix".
 

My Computer

System One

  • OS
    Windows 8.1 Pro x64

zahl

New Member
Boston

Posts
25
#15
you can't use dpc latency checker on windows 8 since it doesn't work right; it will show insane values for everyone. Stick only with latencymon and having said that your latency is not bad.
 

My Computer

System One

  • OS
    Windows 8.1 Pro x64
    Computer type
    PC/Desktop
    System Manufacturer/Model Number
    Lily
    CPU
    intel [email protected]
    Motherboard
    msi z97 mpower max ac
    Memory
    16gb ripjaws x @2133
    Graphics Card(s)
    evga 980ti sc+
    Sound Card
    creative sbz
    Monitor(s) Displays
    dell u3011
    Hard Drives
    840 evo 250 & 9tb
    PSU
    evga supernova 1000
    Case
    corsair 750d
    Cooling
    corsair h110
    Keyboard
    logitech g710
    Mouse
    logitech g502
    Internet Speed
    [email protected]/15
    Browser
    firefox
    Antivirus
    webroot
Posts
26
#16
zahl trust me it is from personal experiences. The crackling/popping audio is so freaking annoying. I mean it doesn't pop like every second , but it does like ever 2 or 5minutes , which can get really annoying . Hopefully Microsoft will have a fix for that in the Update 2...
 

My Computer

System One

  • OS
    Windows 8.1 Pro x64
Posts
26
#17
Ok so this is what I get after running LatecyMon for 2min (And I have HPET Enabled in bios and set to 32bit-default):

Sorted by tabs:

Main:
Screenshot (4).png

Stats:
_________________________________________________________________________________________________________
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 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 0:02:05 (h:mm:ss) on all processors.




_________________________________________________________________________________________________________
SYSTEM INFORMATION
_________________________________________________________________________________________________________
Computer name: SCARFACE
OS version: Windows 8 , 6.2, build: 9200 (x64)
Hardware: G41MT-S2PT, Gigabyte Technology Co., Ltd.
CPU: GenuineIntel Intel(R) Celeron(R) CPU E3400 @ 2.60GHz
Logical processors: 2
Processor groups: 1
RAM: 3964 MB total




_________________________________________________________________________________________________________
CPU SPEED
_________________________________________________________________________________________________________
Reported CPU speed: 2594,0 MHz
Measured CPU speed: 2073,0 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.




_________________________________________________________________________________________________________
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): 19809,177108
Average measured interrupt to process latency (µs): 4,356543


Highest measured interrupt to DPC latency (µs): 78,176976
Average measured interrupt to DPC latency (µs): 1,375999




_________________________________________________________________________________________________________
MEASURED SMI, IPI AND CPU STALLS
_________________________________________________________________________________________________________
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) 6,317331




_________________________________________________________________________________________________________
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): 13,666538
Driver with highest ISR routine execution time: USBPORT.SYS - USB 1.1 & 2.0 Port Driver, Microsoft Corporation


Highest reported total ISR routine time (%): 0,003660
Driver with highest ISR total time: ataport.SYS - ATAPI Driver Extension, Microsoft Corporation


Total time spent in ISRs (%) 0,007759


ISR count (execution time <250 µs): 3279
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): 134,319969
Driver with highest DPC routine execution time: ndis.sys - Network Driver Interface Specification (NDIS), Microsoft Corporation


Highest reported total DPC routine time (%): 0,100073
Driver with highest DPC total execution time: rspLLL64.sys - Resplendence Latency Monitoring and Auxiliary Kernel Library, Resplendence Software Projects Sp.


Total time spent in DPCs (%) 0,224633


DPC count (execution time <250 µs): 350002
DPC count (execution time 250-500 µs): 0
DPC count (execution time 500-999 µs): 0
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.




Process with highest pagefault count: chrome.exe


Total number of hard pagefaults 1
Hard pagefault count of hardest hit process: 1
Highest hard pagefault resolution time (µs): 9,897841
Total time spent in hard pagefaults (%): 0,000004
Number of processes hit: 1




_________________________________________________________________________________________________________
PER CPU DATA
_________________________________________________________________________________________________________
CPU 0 Interrupt cycle time (s): 1,449791
CPU 0 ISR highest execution time (µs): 13,340786
CPU 0 ISR total execution time (s): 0,009338
CPU 0 ISR count: 1595
CPU 0 DPC highest execution time (µs): 90,909792
CPU 0 DPC total execution time (s): 0,521476
CPU 0 DPC count: 346454
_________________________________________________________________________________________________________
CPU 1 Interrupt cycle time (s): 0,328626
CPU 1 ISR highest execution time (µs): 13,666538
CPU 1 ISR total execution time (s): 0,010064
CPU 1 ISR count: 1684
CPU 1 DPC highest execution time (µs): 134,319969
CPU 1 DPC total execution time (s): 0,040246
CPU 1 DPC count: 3548
_________________________________________________________________________________________________________

Processes:
Screenshot (5).png

Drivers:
Screenshot (6).png

CPUs:
Screenshot (7).png

So no its not normal , on the Main tab , it was all stable maximum 256 and then it just jumped 19809 and then back to some low values like 33. Tips are welcome!
 

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My Computer

System One

  • OS
    Windows 8.1 Pro x64

zahl

New Member
Boston

Posts
25
#18
Have you tried running hpet in 64bit mode or disabled? why 32bit with a x64 os.

Also try going into windows power options and disable "usb selective suspend setting"
 

My Computer

System One

  • OS
    Windows 8.1 Pro x64
    Computer type
    PC/Desktop
    System Manufacturer/Model Number
    Lily
    CPU
    intel [email protected]
    Motherboard
    msi z97 mpower max ac
    Memory
    16gb ripjaws x @2133
    Graphics Card(s)
    evga 980ti sc+
    Sound Card
    creative sbz
    Monitor(s) Displays
    dell u3011
    Hard Drives
    840 evo 250 & 9tb
    PSU
    evga supernova 1000
    Case
    corsair 750d
    Cooling
    corsair h110
    Keyboard
    logitech g710
    Mouse
    logitech g502
    Internet Speed
    [email protected]/15
    Browser
    firefox
    Antivirus
    webroot
Posts
26
#20
Ok , so windows boot like in 20sec before it did in 29. Have run Latency Mon for 8minutes , and have not seen a spike . The maxium was 886 , I am guessing that is because I launched LatencyMon at startup... Although I noticed the the DPC was unstable.It wen't from 12 to 123 or something . Will see how it performs in everyday use , but I have seen the lowest values with HPET OFF.
 

My Computer

System One

  • OS
    Windows 8.1 Pro x64