Hello,

I ran this computer
http://setiathome.berkeley.edu/show_host_detail.php?hostid=3806561

for roughly 6 monts with one GPU without any significant issues once I removed the other GPU last spring. Now I added another 670 to the stack and over time I get some DPC stalls again. Now even ntoskrnl.exe. The mouse and GPU freezes periodically for a second or so.

The triggering combination seems to be:
1) running AP GPU
2) fully loaded CPU
3) Internet Explorer running
4) Windows 8 OS
5) at least 2 GTX cards installed.

Either there is a problem with the OS or then there might be some problem with the Motherboard.

All the GPU's work fine alone or in other computers in multiple GPU setups.

Anyone experiencing similar problems with similar setup?


Event Log:

Error 19.10.2013 11:01:12 nvlddmkm 14 None
Error 18.10.2013 23:36:15 nvlddmkm 14 None
Error 18.10.2013 17:32:58 nvlddmkm 14 None
Error 16.10.2013 5:36:50 nvlddmkm 14 None
Error 21.8.2013 7:24:26 nvlddmkm 14 None
Error 10.3.2013 12:42:18 nvlddmkm 14 None
Error 10.3.2013 11:21:47 nvlddmkm 14 None
Error 10.3.2013 11:17:55 nvlddmkm 14 None
Error 9.3.2013 22:40:28 nvlddmkm 14 None
Error 9.3.2013 19:16:05 nvlddmkm 14 None



Warning 19.10.2013 11:04:03 Display 4101 None
Warning 19.10.2013 11:03:53 Display 4101 None
Warning 19.10.2013 11:03:49 Display 4101 None
Warning 19.10.2013 11:01:53 Display 4101 None
Warning 19.10.2013 11:01:38 Display 4101 None
Warning 19.10.2013 11:01:25 Display 4101 None
Warning 19.10.2013 9:11:51 Display 4101 None
Warning 16.10.2013 9:06:08 Display 4101 None
Warning 16.10.2013 9:06:02 Display 4101 None
Warning 16.10.2013 9:05:13 Display 4101 None
Warning 16.10.2013 8:46:24 Display 4101 None
Warning 16.10.2013 8:44:48 Display 4101 None
Warning 16.10.2013 8:39:35 Display 4101 None
Warning 16.10.2013 8:33:51 Display 4101 None
Warning 16.10.2013 8:20:04 Display 4101 None
Warning 16.10.2013 8:00:56 Display 4101 None
Warning 16.10.2013 7:44:30 Display 4101 None
Warning 16.10.2013 7:32:44 Display 4101 None
Warning 16.10.2013 7:20:43 Display 4101 None
Warning 16.10.2013 7:13:45 Display 4101 None
Warning 16.10.2013 7:02:21 Display 4101 None
Warning 16.10.2013 6:41:12 Display 4101 None
Warning 16.10.2013 6:29:42 Display 4101 None
Warning 16.10.2013 6:18:23 Display 4101 None
Warning 16.10.2013 6:04:23 Display 4101 None
Warning 16.10.2013 5:52:40 Display 4101 None
Warning 16.10.2013 5:40:07 Display 4101 None
Warning 27.9.2013 20:08:27 Display 4101 None
Warning 27.9.2013 20:08:19 Display 4101 None
Warning 27.9.2013 20:08:15 Display 4101 None
Warning 21.8.2013 21:51:59 Display 4101 None
Warning 21.8.2013 18:04:05 Display 4101 None
Warning 21.8.2013 17:28:25 Display 4101 None
Warning 21.8.2013 15:58:38 Display 4101 None
Warning 21.8.2013 12:42:57 Display 4101 None
Warning 21.8.2013 9:31:18 Display 4101 None
Warning 10.3.2013 14:14:05 Display 4101 None
Warning 10.3.2013 13:19:49 Display 4101 None
Warning 10.3.2013 9:24:17 Display 4101 None
Warning 10.3.2013 9:18:01 Display 4101 None

---

The triggering combination seems to be:
1) running AP GPU
2) fully loaded CPU

Did you already tried to free 1-2 CPU cores? (i.e. to run 1-2 less CPU tasks)
(as I understand "fully loaded CPU" means you run 8 CPU tasks?)

---

 


- ALF - "Find out what you don't do well ..... then don't do it!" :)
 

Now I added another 670 to the stack and over time I get some DPC stalls again.

Is the PSU up to par?

Gruß
Gundolf

Power Supply is Corsair 650 HX 80 Plus Silver..... Actual consumption is always below 400W.

---

Meaning CPU load is 95-100%. 4 cores for CPU and 4 for GPU.

---

Have you tried installing 8.1 yet? It installs a completely new OS. If there is something wrong with your system, that should fix it. You might want to run Malwarebytes first though, I've discovered Window's 8 built-in Malware protection isn't all that great...

Meaning CPU load is 95-100%. 4 cores for CPU and 4 for GPU.

How many AP instances are you running on your GPU`s ?

---

With each crime and every kindness we birth our future.

Meaning CPU load is 95-100%. 4 cores for CPU and 4 for GPU.

Probably you running 2 AP task on each GPU, thats OK, but isnt OK that your CPU is on 100% all the time.
So, free one more cpu core that your system will be stable when you running all AP task.
When no AP task would available you can go easely with max 6 CPU core.

EDIT: can anyone tell me how to change forum language to english becuse i cant see now a half function here and some words are wrong translated...thanks.

A 650PSU is not enough for a fully loaded i7-3770K CPU + 2x670 (even at stock speeds), it could even works and the total mean consumption could be at 400W but the problem could apears only then your GPU/CPU need's an aditional spike in the 12V power rail.

A single 670 (with no OC) needs a minimim of a 500WPSU and uses up to 170W, that´s "could be" the source of your problem.

For a 2x670 GPU hosts you must go for no less than 750W Gold PSU or even more if you going to use your hosts at full capacity (24/7 crunching). A 650W PSU could work but the question is for who long? and wierds things happens when the PSU can´t handle the GPU power hungry.

---

Power Supply is Corsair 650 HX 80 Plus Silver..... Actual consumption is always below 400W.

I'd put your system details into the Corsair Power Supply finder, and the Asus Power Supply Calculator,
when i tried your system details in the Corsair version it said 750Watt minimum, while the Asus version said 900Watts (assuming two memory sticks, a HD and a DVD writer, two USB devices and two fans)

http://www.corsair.com/us/learn_n_explore/?psu=yes

http://support.asus.com/powersupply.aspx

Claggy

EDIT: can anyone tell me how to change forum language to english becuse i cant see now a half function here and some words are wrong translated...thanks.

Go to front page of website http://setiathome.berkeley.edu/index.php

Main dark-blue navigation bar, right hand side, below 'Goodsearch' link.

Takes you to Languages.

My prime suspect is now on some of the PCI Express lanes not functioning properly. The MB is an ASRock WS. So if I use a certain setup that invokes a "corrupt lane" I get stalls etc.

The reason for this is that I found setup with populating:

PCIe1 and PCIe4, with the speeds PCI-E x16 3.0 and PCI-E x4 2.0 respectively.

functional for over 24 hours without problems.

The following setups have proven problems.
PCIe1 and PCIe3, with the speeds PCI-E x8 3.0 and PCI-E x8 3.0 respectively
PCIe1 and PCIe5, with the speeds PCI-E x16 3.0 and PCI-E x16 3.0 respectively

PCIe1 and PCIe7, has not been verified, yet.



---------------------------------

From the user manual:
2.6 Expansion Slots (PCI Express Slots)
There are 7 PCI Express slots on this motherboard.
PCIE slots:
PCIE1 / PCIE5 (PCIE 3.0 x16 slot) is used for PCI Express x16 lane
width graphics cards, or to install PCI Express graphics cards to support
CrossFireXTM or SLITM function.
PCIE3 / PCIE7 (PCIE 3.0 x16 slot) is used for PCI Express x8 lane
width graphics cards, or to install PCI Express graphics cards to support
CrossFireXTM or SLITM function.
PCIE2 (PCIE 3.0 x16 slot) is used for PCI Express x16 lane width
graphics cards.
PCIE4 (PCIE 2.0 x16 slot) is used for PCI Express x4 lane width graphics
cards or ASRock Game Blaster.
PCIE6 (PCIE 2.0 x1 slot) is used for a PCI Express x1 lane width card,
such as a Gigabit LAN card, SATA2 card, etc.


PCIE Slot Configurations
PCIE1 PCIE2 PCIE3 PCIE5 PCIE7
Single Graphics Card N/A x16 N/A N/A N/A
Two Graphics Cards in x16 N/A N/A x16 N/A
CrossFireXTM or SLITM Mode
Three Graphics Cards in x8 N/A x8 x16 N/A
3-Way CrossFireXTM or
3-Way SLITM Mode
Four Graphics Cards in x8 N/A x8 x8 x8
4-Way CrossFireXTM or
4-Way SLITM Mode

1. In single VGA card mode, it is recommended to install a PCI Express
x16 graphics card in the PCIE2 slot.
2. PCIE1, PCIE3, PCIE5 and PCIE7 slots will be disabled if PCIE2 slot
is occupied.
3. In CrossFireXTM mode or SLITM mode, please install the PCI Express
x16 graphics cards in PCIE1 and PCIE5 slots. Both these two slots
will work at x16 bandwidth.
4. In 3-Way CrossFireXTM or 3-Way SLITM mode, please install the PCI
Express x16 graphics cards in PCIE1, PCIE3 and PCIE5 slots. PCIE1
and PCIE3 will work at x8 bandwidth, while PCIE5 works at x16
bandwidth.
5. In 4-Way CrossFireXTM or 4-Way SLITM mode, please install the PCI
Express x16 graphics cards in PCIE1, PCIE3, PCIE5 and PCIE7
slots. All these four slots will work at x8 bandwidth.
6. Please connect a chassis fan to the motherboard’s chassis fan
connector (CHA_FAN1, CHA_FAN2 or CHA_FAN3) when using
multiple graphics cards for better thermal environment.
7. Only PCIE1, PCIE2, PCIE3, PCIE5, PCIE6 and PCIE7 slots support
Gen 3 speed. To run the PCI Express in Gen 3 speed, please install
an Ivy Bridge CPU. If you install a Sandy Bridge CPU, the PCI
Express will run only at PCI Express Gen 2 speed.

---

...PCIE1 / PCIE5 (PCIE 3.0 x16 slot) is used for PCI Express x16 lane
width graphics cards, or to install PCI Express graphics cards to support
CrossFireXTM or SLITM function.
PCIE3 / PCIE7 (PCIE 3.0 x16 slot) is used for PCI Express x8 lane
width graphics cards, or to install PCI Express graphics cards to support
CrossFireXTM or SLITM function.
PCIE4 (PCIE 2.0 x16 slot) is used for PCI Express x4 lane width graphics
cards or ASRock Game Blaster. (NO SLITM Support)

I've been convinced nVidia has a problem with Windows 8 since I installed Windows 8 and booted to Black Flashing Screens. nVidia just waved their hands and blamed it on M$. Hopefully, Windows 8.1 will fix things...

Windows 8 and booted to Black Flashing Screens. ...

OK... So got to ask...

How can you have a 'black' flash?

Black on black is still black as in still no colour/light to 'flash' with...


(Is that the new blue-screen-of-death but something that can't be seen?? :-( )

Good luck,
Martin

---

See new freedom: Mageia Linux
Take a look for yourself: Linux Format
The Future is what We all make IT (GPLv3)

Windows 8 and booted to Black Flashing Screens. ...

OK... So got to ask...

How can you have a 'black' flash?

Black on black is still black as in still no colour/light to 'flash' with...


(Is that the new blue-screen-of-death but something that can't be seen?? :-( )

Good luck,
Martin

Easy. The monitor turns itself off every second or two giving the appearance of 'Flashing' or 'Flickering'. When the monitor is on, all you see is the cursor and a Black Screen. Then it goes off...then on...then off...
Google it.

Update: I ran now the 2 GTX670 in PCIe buses 3 and 5. For a long while (week) it seemed stable, but when I got it crunching one Astropulse WU and one Multibeam WU on same GPU I encountered problems.

Error 30.10.2013 20:41:58 nvlddmkm 14 None
Error 29.10.2013 4:41:41 nvlddmkm 14 None
Error 28.10.2013 15:06:11 nvlddmkm 14 None
Error 19.10.2013 11:01:12 nvlddmkm 14 None


Warning 30.10.2013 21:19:39 Display 4101 None
Warning 30.10.2013 21:17:44 Display 4101 None
Warning 30.10.2013 21:05:05 Display 4101 None
Warning 30.10.2013 20:50:54 Display 4101 None
Warning 29.10.2013 11:52:49 Display 4101 None
Warning 29.10.2013 11:52:45 Display 4101 None
Warning 29.10.2013 11:52:13 Display 4101 None
Warning 29.10.2013 11:51:47 Display 4101 None
Warning 29.10.2013 11:31:06 Display 4101 None
Warning 29.10.2013 11:17:09 Display 4101 None
Warning 29.10.2013 10:52:37 Display 4101 None
Warning 29.10.2013 10:48:39 Display 4101 None
Warning 29.10.2013 10:24:41 Display 4101 None
Warning 29.10.2013 9:59:43 Display 4101 None
Warning 29.10.2013 9:35:59 Display 4101 None
Warning 29.10.2013 9:05:21 Display 4101 None
Warning 29.10.2013 8:40:50 Display 4101 None
Warning 29.10.2013 8:17:05 Display 4101 None
Warning 29.10.2013 6:24:23 Display 4101 None
Warning 29.10.2013 4:43:04 Display 4101 None
Warning 28.10.2013 16:18:50 Display 4101 None
Warning 28.10.2013 16:18:46 Display 4101 None
Warning 28.10.2013 16:18:20 Display 4101 None
Warning 28.10.2013 16:17:55 Display 4101 None
Warning 28.10.2013 15:07:07 Display 4101 None
Warning 27.10.2013 14:54:18 Display 4101 None
Warning 27.10.2013 14:54:13 Display 4101 None
Warning 27.10.2013 14:54:10 Display 4101 None
Warning 19.10.2013 11:04:03 Display 4101 None

---

Just checked GPU Z:

Card 1: has now full 16 lanes of PCIe in use while Card 2: has only 8 lanes.
Card 1: EVGA 670 standard, Card 2: EVGA 670 FTW.

---

Switched the 670 FTW from slot 3 to another machine. Seems to work fine there.
Installed another 680 GTX into slot 1 and ran it together with standard GTX 670 in slot 5. Situation went for the worse...

_________________________________________________________________________________________________________
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 0:10:06 (h:mm:ss) on all processors.


_________________________________________________________________________________________________________
SYSTEM INFORMATION
_________________________________________________________________________________________________________
Computer name: XERXES
OS version: Windows 8 , 6.2, build: 9200 (x64)
Hardware: ASRock, Z77 WS
CPU: GenuineIntel Intel(R) Core(TM) i7-3770K CPU @ 3.50GHz
Logical processors: 8
Processor groups: 1
RAM: 16341 MB total


_________________________________________________________________________________________________________
CPU SPEED
_________________________________________________________________________________________________________
Reported CPU speed: 3500,0 MHz
Measured CPU speed: 2127,0 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): 7242627,045824
Average measured interrupt to process latency (µs): 18,188028

Highest measured interrupt to DPC latency (µs): 7242607,443712
Average measured interrupt to DPC latency (µs): 16,752402


_________________________________________________________________________________________________________
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) 11,702754


_________________________________________________________________________________________________________
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): 50441,254286
Driver with highest ISR routine execution time: dxgkrnl.sys - DirectX Graphics Kernel, Microsoft Corporation

Highest reported total ISR routine time (%): 1,012740
Driver with highest ISR total time: dxgkrnl.sys - DirectX Graphics Kernel, Microsoft Corporation

Total time spent in ISRs (%) 1,182672

ISR count (execution time <250 µs): 6199310
ISR count (execution time 250-500 µs): 0
ISR count (execution time 500-999 µs): 44
ISR count (execution time 1000-1999 µs): 647
ISR count (execution time 2000-3999 µs): 146
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): 290181,002857
Driver with highest DPC routine execution time: nvlddmkm.sys - NVIDIA Windows Kernel Mode Driver, Version 320.18 , NVIDIA Corporation

Highest reported total DPC routine time (%): 0,65890
Driver with highest DPC total execution time: dxgkrnl.sys - DirectX Graphics Kernel, Microsoft Corporation

Total time spent in DPCs (%) 0,423603

DPC count (execution time <250 µs): 3458785
DPC count (execution time 250-500 µs): 0
DPC count (execution time 500-999 µs): 122
DPC count (execution time 1000-1999 µs): 13
DPC count (execution time 2000-3999 µs): 20
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: mmc.exe

Total number of hard pagefaults 1510
Hard pagefault count of hardest hit process: 885
Highest hard pagefault resolution time (µs): 150176,941714
Total time spent in hard pagefaults (%): 0,174873
Number of processes hit: 19


_________________________________________________________________________________________________________
PER CPU DATA
_________________________________________________________________________________________________________
CPU 0 Interrupt cycle time (s): 113,571081
CPU 0 ISR highest execution time (µs): 50441,254286
CPU 0 ISR total execution time (s): 57,335946
CPU 0 ISR count: 6200256
CPU 0 DPC highest execution time (µs): 50649,808571
CPU 0 DPC total execution time (s): 18,248903
CPU 0 DPC count: 2925547
_________________________________________________________________________________________________________
CPU 1 Interrupt cycle time (s): 1,420216
CPU 1 ISR highest execution time (µs): 0,0
CPU 1 ISR total execution time (s): 0,0
CPU 1 ISR count: 0
CPU 1 DPC highest execution time (µs): 2006,213714
CPU 1 DPC total execution time (s): 0,097673
CPU 1 DPC count: 45470
_________________________________________________________________________________________________________
CPU 2 Interrupt cycle time (s): 7,785740
CPU 2 ISR highest execution time (µs): 0,0
CPU 2 ISR total execution time (s): 0,0
CPU 2 ISR count: 0
CPU 2 DPC highest execution time (µs): 290181,002857
CPU 2 DPC total execution time (s): 1,730631
CPU 2 DPC count: 254116
_________________________________________________________________________________________________________
CPU 3 Interrupt cycle time (s): 4,927838
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): 317,039143
CPU 3 DPC total execution time (s): 0,053659
CPU 3 DPC count: 38867
_________________________________________________________________________________________________________
CPU 4 Interrupt cycle time (s): 4,584513
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): 316,7140
CPU 4 DPC total execution time (s): 0,065876
CPU 4 DPC count: 40826
_________________________________________________________________________________________________________
CPU 5 Interrupt cycle time (s): 5,058538
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): 316,904571
CPU 5 DPC total execution time (s): 0,067707
CPU 5 DPC count: 42690
_________________________________________________________________________________________________________
CPU 6 Interrupt cycle time (s): 5,014937
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): 317,2060
CPU 6 DPC total execution time (s): 0,135418
CPU 6 DPC count: 54458
_________________________________________________________________________________________________________
CPU 7 Interrupt cycle time (s): 4,647503
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): 1919,2120
CPU 7 DPC total execution time (s): 0,136427
CPU 7 DPC count: 56984
_________________________________________________________________________________________________________

The GTX680 was running fine in similar machine with Windows7. Have to try to switch motherboards and recheck. That should tell if problem is in Windows8 or if the problem is in the motherboard....

---

If you are not using the NVIDIA High Definition Audio outputs on those cards then try disabling them to see if that helps.

Cheers.

Hello,

I made the switch between the two computers.
Swapped identical items:
CPU, motherboard, cooler, memory.

The rest stayed the same. Display adapters, PSU, chassis, Drives etc.

So far it looks like the Win8 setup looks fine and the Win7 setup has DPC spikes and issues. The Win7 system with the HW from Win 8 has problems.

To me it looks more like a HW issue. It has to be either:

1) Motherboard
2) CPU
3) Memory which I doubt.....

Look at the Win 8 now with the HW from the Win7 system:

_________________________________________________________________________________________________________
CONCLUSION
_________________________________________________________________________________________________________
Your system appears to be suitable for handling real-time audio and other tasks without dropouts.
LatencyMon has been analyzing your system for 0:11:04 (h:mm:ss) on all processors.


_________________________________________________________________________________________________________
SYSTEM INFORMATION
_________________________________________________________________________________________________________
Computer name: XERXES
OS version: Windows 8 , 6.2, build: 9200 (x64)
Hardware: ASRock, Z77 WS
CPU: GenuineIntel Intel(R) Core(TM) i7-3770K CPU @ 3.50GHz
Logical processors: 8
Processor groups: 1
RAM: 16341 MB total


_________________________________________________________________________________________________________
CPU SPEED
_________________________________________________________________________________________________________
Reported CPU speed: 3500,0 MHz
Measured CPU speed: 2101,0 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): 397,016379
Average measured interrupt to process latency (µs): 3,913632

Highest measured interrupt to DPC latency (µs): 154,183959
Average measured interrupt to DPC latency (µs): 2,439926


_________________________________________________________________________________________________________
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): 364,467143
Driver with highest ISR routine execution time: dxgkrnl.sys - DirectX Graphics Kernel, Microsoft Corporation

Highest reported total ISR routine time (%): 1,552003
Driver with highest ISR total time: dxgkrnl.sys - DirectX Graphics Kernel, Microsoft Corporation

Total time spent in ISRs (%) 1,825015

ISR count (execution time <250 µs): 13155285
ISR count (execution time 250-500 µs): 0
ISR count (execution time 500-999 µs): 491
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): 434,316571
Driver with highest DPC routine execution time: ndis.sys - NDIS 6.30 driver, Microsoft Corporation

Highest reported total DPC routine time (%): 0,712017
Driver with highest DPC total execution time: nvlddmkm.sys - NVIDIA Windows Kernel Mode Driver, Version 320.18 , NVIDIA Corporation

Total time spent in DPCs (%) 0,803979

DPC count (execution time <250 µs): 4794855
DPC count (execution time 250-500 µs): 0
DPC count (execution time 500-999 µs): 113
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: taskhostex.exe

Total number of hard pagefaults 1992
Hard pagefault count of hardest hit process: 521
Highest hard pagefault resolution time (µs): 1941044,423143
Total time spent in hard pagefaults (%): 1,526699
Number of processes hit: 25


_________________________________________________________________________________________________________
PER CPU DATA
_________________________________________________________________________________________________________
CPU 0 Interrupt cycle time (s): 126,175545
CPU 0 ISR highest execution time (µs): 364,467143
CPU 0 ISR total execution time (s): 97,010918
CPU 0 ISR count: 13155776
CPU 0 DPC highest execution time (µs): 434,316571
CPU 0 DPC total execution time (s): 40,812208
CPU 0 DPC count: 4294954
_________________________________________________________________________________________________________
CPU 1 Interrupt cycle time (s): 0,437260
CPU 1 ISR highest execution time (µs): 0,0
CPU 1 ISR total execution time (s): 0,0
CPU 1 ISR count: 0
CPU 1 DPC highest execution time (µs): 182,648571
CPU 1 DPC total execution time (s): 0,109968
CPU 1 DPC count: 52673
_________________________________________________________________________________________________________
CPU 2 Interrupt cycle time (s): 0,655787
CPU 2 ISR highest execution time (µs): 0,0
CPU 2 ISR total execution time (s): 0,0
CPU 2 ISR count: 0
CPU 2 DPC highest execution time (µs): 173,999143
CPU 2 DPC total execution time (s): 0,340717
CPU 2 DPC count: 69334
_________________________________________________________________________________________________________
CPU 3 Interrupt cycle time (s): 0,408822
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): 324,2580
CPU 3 DPC total execution time (s): 0,139394
CPU 3 DPC count: 58598
_________________________________________________________________________________________________________
CPU 4 Interrupt cycle time (s): 1,402076
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): 290,026286
CPU 4 DPC total execution time (s): 0,71260
CPU 4 DPC count: 134640
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CPU 5 Interrupt cycle time (s): 0,840355
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): 127,643429
CPU 5 DPC total execution time (s): 0,112922
CPU 5 DPC count: 53020
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CPU 6 Interrupt cycle time (s): 0,778769
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): 195,387143
CPU 6 DPC total execution time (s): 0,359175
CPU 6 DPC count: 71595
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CPU 7 Interrupt cycle time (s): 0,826342
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): 126,019429
CPU 7 DPC total execution time (s): 0,149495
CPU 7 DPC count: 60154
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