AS6920G DPC latency issue

I've recently downloaded a program called DPC Latency Checker. After running it, I've noticed that peirodic dpc latency spikes.



Turns out the Intel® Wireless WiFi Link 4965AGN is causing these spikes. Tried updating the drivers to the latest on Intel's website, but the issue persists.


Also, is 200us high value for average latency?

 

That doesn't actually look too bad for a laptop. I've used that program over the years and it is good at finding problem devices, but usually all one can do is just switch them off.

At the moment here on a problem Aspire 5536, I have blocks of 5 peaks of over 4000us, but I think it is just the symptom of a bigger problem.

Was there a reason why you ran that diagnostic program?

 

not really i saw a post with a latency issue and thought i test if i had any.

 

That's a perfectly normal latency for a laptop. Problems (stuttering/sound pop-ups/etc) begin after 20K, but become really obvious above 40-60k. 1.5k is nothing to worry about.
But if you're a perfectionist - try disabling cards in Device Manager and see if it helps. When you find the guilty adapter (my guess is WIFI) try using a different driver or tweaking the advanced options (ex. power saving ).
Good Luck!

 

i said in the OP:

I've tried disabling "turn off device to save power" option, but it didn't work. any other suggestions?

 

Ooops, didn't notice that line, sorry. So you've got the culprit.
Have you tried the stock windows drivers for the card?
You can remove the current driver including the software (click the checkbox when prompted), run CCleaner and then install some older drivers.
Again, 1.4k is not a problem. You'll never notice any video/audio issues with it.

 

Hna, I seem to get a yellow bar (or close to it) about once every 10 seconds.

 

tried that, and it didn't work. acer has the drivers on their site but they're 190mb don't know why.

did you try disabling the wifi? don't try disabling it from the laptop button, as that wouldn't work. so you should disable it from the device manager.

 

Yep, that's the classic WIFi latency. If changing the advanced properties or trying different drivers doesn't help - I'd say leave it. There are not too many notebooks in the worlds that can stay green all the time.

 

If anyone here is running DPC Latency checker because they are using a usb audio interface under Windows 7 into audio software that uses asio drivers, I'd be really interested to hear.

I'm still fighting a really, really weird problem with this with my Acer 5536.

 

Good to know! I don't plan on doing any tweaking - changing Nvidia drivers seems to have fixed any popping/crackling I ran into.