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


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  • 3 weeks later...

Hey there,

 

i am suffering from DPC drop outs, latency spikes.

I tried to solve the problem, disabled not neccesarry hardware like wlan, etc.

updated all the drivers. It kinda works when disabling the acpi.sys with process hacker but i still get drop outs from time to time.

what makes it almost impossible to use the laptop for live music performances.

I tried to log the data with xperf, but somehow i cant find the DPC CPU usage table..maybe i did something wrong.

i also run the DPC latency mon wich results are that the laptop is not suitable for playing realtime audio.

Its a samsung ativ 9 plus and i kinda get frustrated especially for the high price it was.

 

i hope u can help me thanks a lot

 

https://dl.dropboxusercontent.com/u/25112028/DPC_Interrupt_ACPI_BatteryController_Disabled.rar

https://dl.dropboxusercontent.com/u/25112028/DPC_Interrupt_ACPI.SYS_supsended.rar

 

https://dl.dropboxusercontent.com/u/25112028/1.jpg

https://dl.dropboxusercontent.com/u/25112028/2.jpg

Edited by kasma
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the new WPA.exe tool sucks completely. Suspended is better (only ACPI.sy spikes between 128 usecs AND <=      256 usecs). With the battery disabled it is still over 1024. I can't really debug this from the ETL. You must disable devices until you find out which one causes it

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  • 2 weeks later...

Just made the move from AMD to Intel and it looks like I've got the same old problem with the network components of Windows causing latency problems.

 

Latency_Mon_Drivers.png

Latency_Mon_Main.png

 

Not sure how to make a trace though, as I know I mustn't have LatencyMon running whilst I do that but without it I can't tell when it's spiked and I should stop the trace. In these screenshots, it spiked after about two minutes but I've restarted it and now it's been running for three and only hit 417us (which is still too high for my liking but LM says it's OK).

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Hi,

I'm coming back with the usual combination of high DPC/sound stuttering in Windows 7 x64.

It happened to me before and I managed to pin it down to AVG issues before. Uninstalled it and everything ran smoothly until a few days ago. I know I did some updates with my antispyware software and also with the Microsoft Anti-Malware but doing rounds of disabling stuff I haven't managed to correct the problem so any help would be most welcome.

I've run xperf as I was told when I found the AVG issue and this is the file with the result: CPU

I have a Toshiba Satellite with these specs:

OS: Windows 7, x64
Processor: Intel i7-3610QM @ 2.30GHz
RAM: 16GB
Sound: Onboard Realtek
Video: NVIDIA GeForce GT 630M

Cheers!

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I can't download the file. I get a captcha with no text which I should enter :(

That's weird, it works for me in all my internet browsers, logged in or not. Give it another try and let me know... Will try other site if it doesn't work.

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It seems quite clear from LatencyMon that the network components are causing the high latency. ndis.sys - 1.23ms NETIO.sys - 0.56ms, tcpip.sys - 0.33ms. The next highest is storport.sys - 0.20ms

 

I don't know if it will capture anything, as I wasn't running LatencyMon at the same time so couldn't see what was happening but I left the trace running for three minutes before capturing it, so maybe it will show something helpful if you'd be good enough to take a look.

 

https://drive.google.com/file/d/0B1fDI89phEESSC1rZzlBMnFUeUE/edit?usp=sharing

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It seems quite clear from LatencyMon that the network components are causing the high latency. ndis.sys - 1.23ms NETIO.sys - 0.56ms, tcpip.sys - 0.33ms. The next highest is storport.sys - 0.20ms

 

look for a driver update of the driver e1d64x64.sys (Intel network card driver)

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compress the file as 7z/RAR amd upload it somewhere please, please. I doesn't work for me.

Let's see if the Drive trick works, otherwise I'll put it on Dropbox...

https://drive.google.com/file/d/0B8dMU8Rgv8EVbDBGT3RsUGhqRjg/edit?usp=sharing

 

 

please update the Intel Wireless driver Netwsw00.sys and see if this improves it. You also have NDIS.sys DPC spikes. Also update /remove Panda (NNSHttp.sys).

Edited by MagicAndre1981
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