DPC latency

andyvee · « **on:** May 19, 2011, 10:25:55 am »

Hi all ,

Just to check with some of the guru's here ( Morning Mantis

)

I just found some probably old info and found that disabling HPET would help with DPC timings so thought i'd give it a go . With HPET on i was ~ 150 micro secs , with it disabled i'm < 20 micro secs .
This seems pretty good to me but are there any potential downsides to doing this ( running win7ult 64 ) ? .

Dark Mantis · « **Reply #1 on:** May 19, 2011, 12:11:04 pm »

Hi

To be fair I think the only downside is that there might be a slight performance hit but from my experiments it doesn't seem to make a lot of difference one way or the other.

andyvee · « **Reply #2 on:** May 19, 2011, 01:05:20 pm »

Well what i've noticed after a little bit of trying it on/off is that the micro-stutter i got with my sli setup has gone with it off completely , turn it back on and there it is again so i'll leave it off

.

Dark Mantis · « **Reply #3 on:** May 19, 2011, 01:21:36 pm »

Yes certainly worth trying but please let me know how you get on with it disabled as it is not something that tends to get much testing.

andyvee · « **Reply #4 on:** May 20, 2011, 10:35:56 am »

Well i gave it a good go but have re-enabled it for now . what i found was that although it seems to remove the odd stutter it had an adverse effect on my keyboard/mouse input where it felt like your not really in control in an fps , turning it back on and all back to " normal " . Maybe something to play with later

.

Dark Mantis · « **Reply #5 on:** May 20, 2011, 12:31:19 pm »

Interesting anyway. I didn't notice that when I was playing, I mean experimenting and testing, but maybe I just didn't notice at the time.

DPC latency

andyvee

DPC latency

Dark Mantis

Re: DPC latency

andyvee

Re: DPC latency

Dark Mantis

Re: DPC latency

andyvee

Re: DPC latency

Dark Mantis

Re: DPC latency