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Extremely wierd DPC latency issue
I didn't know if i should have put this in hardware, but i decided this would be fitting.
I'm not trying to stroke the e-peen, but i know what i'm talking about, so any advice i'll comprehend.
I noticed after a recent reinstall to throw on 64bit when my cpu was under a respectable amount of load i would stutter, like if my dpc latency was high (video and audio stuttering). I decided to download a dpc monitor - averaging around ~2000us. I disabled pretty much every single piece of hardware in device manager besides my gpu (too lazy to restart and toss my cable in the onboard, plus if it's my gpu i don't wanna know and i doubt it is) and no luck. After frantically looking for a solution, i found a tool called latencymon. Essentially, it tells you what driver is causing the most latency, so you can identify a bad driver with a bad piece of hardware or just a bad driver. Excited, i run the program and to my suprise - my latency does not peak 300. I ran the other monitor to see if it was just bugged - it did not peak 300. When i turn off latencymon, my latency goes right back up.
Although i can just run latencymon and call it a suitable band-aid (it's what i've been doing) it DOES eat up a significant amount of resources (~100-200mb of ram, 25% of my cpu) and is annoying to keep running in the back.
So, i was wondering if anyone could tell me what does that program actually do that it's somehow rectifying my problem? Or what IS the source of my problem?
Thanks in advance.
EDIT: Forgot my specs, but probably unhelpful since hardware doesn't seem to be the problem.. (which doesn't make sense as it is)
Asus/megatrend (i believe) VIOLA mobo (good luck finding it)
Nvidia GTX 260
PhenomX4 920 @2.8ghz (am2+ mobo)
5GB DDR2 ram
USB sound card
Last edited by justince; 09 Jun 2011 at 15:50.