How to get the cause of high CPU usage by DPC / Interrupt

[uncleruckus]

its getting really annoying before the interrupts would stop after 15-20 min after i start my computer now its over 2 hours and its still doing it.

[MagicAndre1981]

ISR/DPC activity is normal if you transfer data. What are the issue you have? Do you have audio/video drops?

[doomguard]

do you also use a laptop? What is the temperature?

yes. i am using dell studio xps 1640. the temperature is around 60c without doing anything...

[MagicAndre1981]

Use Speedfan and increase the cpu cooler fan speed to reduce the temperature. Does this improve it? If not, zip the ETL file and upload the zip (skydrive, dropbox) and send me a link.

[Ebedou]

check the temperature of your laptop CPU while you get the issue. ACPI.sys looks

Hello MagicAndre,

I monitored the temp of CPU, and last time the problem started and Interrupts fired up everywhere, the cpu was around 75°C. Not sure if this is due to temperature though, as yesterday I ran some tests too, but I wasn't able to trigger the problem, even though temperature of the cpu reached as high as 100°C.

In any case, if acpi.sys is supposed to prevent the computer from overheating.. then isn't it a bit bogus that by doing so it uses the full charge of one of the cores and hence makes the whole thing heat even more?

Thanks for your help

E.

[MagicAndre1981]

the ACPI is only called because the CPU temperature is too high. Try Speedfan and try to change the speed of your CPU fan:

http://www.almico.com/speedfan.php

Does this improve the situation?

[bphlpt]

Getting temps that high, I would probably also try taking the back of the laptop completely off and see if you might have some major dust bunnies keeping the fan from doing its job.

Cheers and Regards

[doomguard]

heres the link.

http://sdrv.ms/ZfUrxp

i notice that there is some dropout of audio when i try to connect to wifi while watching youtube.. My intel 5100 AGN is lastest driver already..

[MagicAndre1981]

i notice that there is some dropout of audio when i try to connect to wifi while watching youtube.. My intel 5100 AGN is lastest driver already..

you have USBport spikes:

Total = 290022 for module USBPORT.SYS
Elapsed Time, >      512 usecs AND <=     1024 usecs,      5, or   0.00%
Elapsed Time, >     1024 usecs AND <=     2048 usecs,     29, or   0.01%
Elapsed Time, >     2048 usecs AND <=     4096 usecs,    243, or   0.08%
Elapsed Time, >     4096 usecs AND <=     8192 usecs,     26, or   0.01%
Elapsed Time, >     8192 usecs AND <=    16384 usecs,     18, or   0.01%
Elapsed Time, >    16384 usecs AND <=    32768 usecs,     21, or   0.01%
Elapsed Time, >    32768 usecs AND <=    65536 usecs,      6, or   0.00%
Total,                                                290022

Looks like your GlobeTrotter GI1505 - Modem Interface seams to cause it. Update the driver.

[doomguard]

i notice that there is some dropout of audio when i try to connect to wifi while watching youtube.. My intel 5100 AGN is lastest driver already..

you have USBport spikes:

Total = 290022 for module USBPORT.SYS
Elapsed Time, >      512 usecs AND <=     1024 usecs,      5, or   0.00%
Elapsed Time, >     1024 usecs AND <=     2048 usecs,     29, or   0.01%
Elapsed Time, >     2048 usecs AND <=     4096 usecs,    243, or   0.08%
Elapsed Time, >     4096 usecs AND <=     8192 usecs,     26, or   0.01%
Elapsed Time, >     8192 usecs AND <=    16384 usecs,     18, or   0.01%
Elapsed Time, >    16384 usecs AND <=    32768 usecs,     21, or   0.01%
Elapsed Time, >    32768 usecs AND <=    65536 usecs,      6, or   0.00%
Total,                                                290022

Looks like your GlobeTrotter GI1505 - Modem Interface seams to cause it. Update the driver.

thanks.. i updated my globetrotter GI1505 and the result is like this..

this result showing i am watching youtube through chrome while my steam is patching the game.. is this normal for usbport.sys to get to high value when transferring data through broadband?

Still got some audio dropout and

when i try to connect to wifi, the ndis.sys will raise to the highest DPC routine execution. is this normal?

My kernel timer latency also causing very high value and very unstable.. the value is up and down,, what can i do to make it stable at low point?

Here is my newer etl file.

http://sdrv.ms/WxX6nC

thanks a lot and thank MaficAndre for answering my helping a lot. =) sorry for my poor English too..

[MagicAndre1981]

Total = 489637 for module USBPORT.SYS
Elapsed Time, >      512 usecs AND <=     1024 usecs,      1, or   0.00%
Elapsed Time, >     1024 usecs AND <=     2048 usecs,      0, or   0.00%
Elapsed Time, >     2048 usecs AND <=     4096 usecs,      4, or   0.00%
Elapsed Time, >     4096 usecs AND <=     8192 usecs,      2, or   0.00%
Elapsed Time, >     8192 usecs AND <=    16384 usecs,      5, or   0.00%
Elapsed Time, >    16384 usecs AND <=    32768 usecs,     10, or   0.00%
Elapsed Time, >    32768 usecs AND <=    65536 usecs,      3, or   0.00%
Total,                                                489637


Total = 598860 for module ndis.sys
Elapsed Time, >     1024 usecs AND <=     2048 usecs,      0, or   0.00%
Elapsed Time, >     2048 usecs AND <=     4096 usecs,      3, or   0.00%
Elapsed Time, >     4096 usecs AND <=     8192 usecs,      1, or   0.00%
Elapsed Time, >     8192 usecs AND <=    16384 usecs,      3, or   0.00%
Elapsed Time, >    16384 usecs AND <=    32768 usecs,      4, or   0.00%
Elapsed Time, >    32768 usecs AND <=    65536 usecs,      1, or   0.00%
Elapsed Time, >    65536 usecs AND <=   131072 usecs,      1, or   0.00%
Total,                                                598860

Total = 579 for module netbt.sys
Elapsed Time, >     1024 usecs AND <=     2048 usecs,      1, or   0.17%
Elapsed Time, >     2048 usecs AND <=     4096 usecs,     17, or   2.94%
Elapsed Time, >     4096 usecs AND <=     8192 usecs,      0, or   0.00%
Elapsed Time, >     8192 usecs AND <=    16384 usecs,      1, or   0.17%
Elapsed Time, >    16384 usecs AND <=    32768 usecs,      1, or   0.17%
Total,                                                   579

there are also NDIS.sys and netbt.sys spikes. Those are both also caused by chrome when you transfer data. Try to connect the GlobeTrotter GI1505 to a different USBport.

[doomguard]

Total = 489637 for module USBPORT.SYS
Elapsed Time, >      512 usecs AND <=     1024 usecs,      1, or   0.00%
Elapsed Time, >     1024 usecs AND <=     2048 usecs,      0, or   0.00%
Elapsed Time, >     2048 usecs AND <=     4096 usecs,      4, or   0.00%
Elapsed Time, >     4096 usecs AND <=     8192 usecs,      2, or   0.00%
Elapsed Time, >     8192 usecs AND <=    16384 usecs,      5, or   0.00%
Elapsed Time, >    16384 usecs AND <=    32768 usecs,     10, or   0.00%
Elapsed Time, >    32768 usecs AND <=    65536 usecs,      3, or   0.00%
Total,                                                489637


Total = 598860 for module ndis.sys
Elapsed Time, >     1024 usecs AND <=     2048 usecs,      0, or   0.00%
Elapsed Time, >     2048 usecs AND <=     4096 usecs,      3, or   0.00%
Elapsed Time, >     4096 usecs AND <=     8192 usecs,      1, or   0.00%
Elapsed Time, >     8192 usecs AND <=    16384 usecs,      3, or   0.00%
Elapsed Time, >    16384 usecs AND <=    32768 usecs,      4, or   0.00%
Elapsed Time, >    32768 usecs AND <=    65536 usecs,      1, or   0.00%
Elapsed Time, >    65536 usecs AND <=   131072 usecs,      1, or   0.00%
Total,                                                598860

Total = 579 for module netbt.sys
Elapsed Time, >     1024 usecs AND <=     2048 usecs,      1, or   0.17%
Elapsed Time, >     2048 usecs AND <=     4096 usecs,     17, or   2.94%
Elapsed Time, >     4096 usecs AND <=     8192 usecs,      0, or   0.00%
Elapsed Time, >     8192 usecs AND <=    16384 usecs,      1, or   0.17%
Elapsed Time, >    16384 usecs AND <=    32768 usecs,      1, or   0.17%
Total,                                                   579

there are also NDIS.sys and netbt.sys spikes. Those are both also caused by chrome when you transfer data. Try to connect the GlobeTrotter GI1505 to a different USBport.

not working even thought i changed the usb port of my modem. i wonder why my interrupt to process latency so unstable and spike to the peak whole time?

[MagicAndre1981]

I have no idea, because I never use USB network devices.

[accela]

Hi, i've been having huge spikes and i hope you can help me. I've tried nearly everything (different drivers for everything, clean install without drivers, adding drivers one by one and monitoring latencymon).. And am still having spikes.

The most problematic for me is that it causes sound crackling. I've turned off everything that isn't used in BIOS and have tried updating BIOS, no dice.. I was hoping you could have a look

Heres the ETL-file:

http://www5.zippyshare.com/v/92493041/file.html

Password:

MSFN567

Thank you!!

EDIT:

I've tried removing the Graphics Card Drivers but the culprit changes to ATAPORT.sys and USBPORT.sys then. ACPI.sys have also been messing around.

also ntoskrnl.exe have reported issues in latencymon.

I have also tried having the graphics card in different slots.

The only thing connected are my mouse and keyboard. My external sound card have been disconnected and drivers have been removed before.

Might it be a faulty motherboard? I have had a stable overclock for the past few years but maybe it's on its way out. Overclock have been removed atm.

Like i said, i've tried on a clean install with nothing plugged in except one hard drive, and the spikes are still there.

Edited March 9, 2013 by accela

[MagicAndre1981]

I can't see any spikes:

Total = 7042

Elapsed Time, > 0 usecs AND <= 1 usecs, 2487, or 35.32%

Elapsed Time, > 1 usecs AND <= 2 usecs, 694, or 9.86%

Elapsed Time, > 2 usecs AND <= 4 usecs, 1664, or 23.63%

Elapsed Time, > 4 usecs AND <= 8 usecs, 916, or 13.01%

Elapsed Time, > 8 usecs AND <= 16 usecs, 483, or 6.86%

Elapsed Time, > 16 usecs AND <= 32 usecs, 548, or 7.78%

Elapsed Time, > 32 usecs AND <= 64 usecs, 155, or 2.20%

Elapsed Time, > 64 usecs AND <= 128 usecs, 52, or 0.74%

Elapsed Time, > 128 usecs AND <= 256 usecs, 34, or 0.48%

Elapsed Time, > 256 usecs AND <= 512 usecs, 9, or 0.13%

Total,

delays till 512µs should not cause sound issues.