Discussion: NVIDIA Display Driver (nvlddmkm.sys) DPC Latency

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Hey there,

it’s a Realtek 2.5GbE LAN. I won’t use it since I’m connected up using WiFi 6. The only other PCIe devices would be the 1TB Samsung 980 Pro M.2 NVMe drive, and I have a smaller Kingston A2000 250GB drive on the rear M.2 slot. It’s a mini-ITX board so the I/O in general is limited.
Did you check msinfo32 for any IRQ conflicts? Realtek NIC should not introduce problems if it not shares the same interrupt with another device, just to my thinking. But if it works for you using WiFi, that's great :cool:
 
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- What Windows and version?
- Is this a modified image, if so what kind of tweaks?
- Did you also do the interrupt affinity tweaks or any other changes that could contribute to the lower spiking on the new driver?

Can you fill out this template please, we don't have any info on your machine:
https://www.ntlite.com/community/in...lddmkm-sys-dpc-latency.2924/page-7#post-30597
I hoped you would not ask, because i didn't think it is important, and already guessed.
There are only a few guys here who actually had success at the topic, by downgrading their NVIDIA driver.
I am at the same camp. I have an RTX 30XX and a recent PC setup therefore.
That camp has a specific group, which also does audio stuff and thus they are more sensitive to recognize audio issues.
To be honest, anyone else who experiences the issues mentioned in this thread while playing games, i don't know if they have sufficient hardware for what they are doing at all...
The only tweaks i have done: high performance power profile in windows, disabled all CPU power management functions in BIOS, disabled the Meltdown and spectre fix (which all were only cosmetics).

But for the records:

PC Type: Desktop
Operating System/Version: Windows 21H2 (Server 2022)
Processor: Core i7 11700k
Graphics: RTX 3090
Driver Type: Game Ready
Driver Version: 512.95
DPC Spikes: about 300 idle, about 1000 in-app
 
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I hoped you would not ask, because i didn't think it is important, and already guessed.
There are only a few guys here who actually had success at the topic, by downgrading their NVIDIA driver.
I am at the same camp. I have an RTX 30XX and a recent PC setup therefore.
That camp has a specific group, which also does audio stuff and thus they are more sensitive to recognize audio issues.
To be honest, anyone else who experiences the issues mentioned in this thread while playing games, i don't know if they have sufficient hardware for what they are doing at all...

With all due respect, it isn't a case of 'camps' , as i am a gamer and i make music, and have NOT had any issues and am running the latest nvidia driver, i have an amd ryzen 5 5600 cpu and a 1070gtx ....... i have sufficient hardware for what i need, like so many others here. we are all here trying to help each other, and just saying ' downgrade drivers ' isn't a solution for everyone. it may work for you, great.... but it isn't a guarantee work for others.
 
With all due respect, it isn't a case of 'camps' , as i am a gamer and i make music, and have NOT had any issues and am running the latest nvidia driver, i have an amd ryzen 5 5600 cpu and a 1070gtx ....... i have sufficient hardware for what i need, like so many others here. we are all here trying to help each other, and just saying ' downgrade drivers ' isn't a solution for everyone. it may work for you, great.... but it isn't a guarantee work for others.
Present that system and its problems to me and i will try to fix it. The thing is, i can't do much without getting my hands on a system. I don't remember many times in my life where i couldn't find a solution to a PC problem. Even if it costs money. But it depends on a lot of details.
 
I hoped you would not ask, because i didn't think it is important, and already guessed.
There are only a few guys here who actually had success at the topic, by downgrading their NVIDIA driver.
I am at the same camp. I have an RTX 30XX and a recent PC setup therefore.
That camp has a specific group, which also does audio stuff and thus they are more sensitive to recognize audio issues.
To be honest, anyone else who experiences the issues mentioned in this thread while playing games, i don't know if they have sufficient hardware for what they are doing at all...
There's a lot to unpack here, and I'm not sure how to address this reply without it creating an argument...

All I can say instead is, stuff like this is why the thread isn't making progress, because we have too many people giving us unreliable information, combined with a lot of members not reading through the previous pages, thus rehashing a bunch of old topics again. These things account for most of the latest pages in the recent week.

I'd like to ask all new thread posters to please see page #1 and look at the links I've been updating on the first post. These are "checkpoints" where I tried to summarize all the pages up to that point and/or focus on some bigger aspects that we spent a good amount of time on. If you want to post in this thread, please respect all the time and effort that has gone into it by at least reading through these checkpoints, though ideally you would read the whole thread. If you don't want to abide by the rules (link) then please don't post anymore so the remaining troubleshooters have less cross-talk to deal with. It's not personal, it's just efficiency.
 
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1 last latmon before the big wipe..........

system unchanged after last post....


hmmmmmmmmmmmmm

i should add, that is with McAfee running
 

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1 last latmon before the big wipe..........

system unchanged after last post....


hmmmmmmmmmmmmm

i should add, that is with McAfee running
Eeewww antivirus.....hope you got my sarcasm there. Will wait for the hard drive to be snapped by Thanos(Taosd) and see what the results are fresh
 
right....... for starters

FRESH install win 11,

display power off - never
Power useage - best performance

programs installed ( non windows )
Latmon
Gimp
 

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right....... for starters

FRESH install win 11,

display power off - never
Power useage - best performance

programs installed ( non windows )
Latmon
Gimp
Same as above but ONLY adding nvidia drivers. SO FAR OFFLINE

same as before but added geforce experience and LATEST nvidia drivers only
 

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i popped into nvidia forums earlier to have a look. user with a gt730(purchased recently) had a problem, post over a month old, 1 reply only, by a user, not staff, it read "get a supported card".
if thats the attitude on the official nvidia support forum then eff em. A LOT of users with a LOT of problems.
 
With that being said, if you're desperate or just looking to squeeze every bit of performance possible from a machine, then yeah it can be worth the time to go through these sites and test 100 things in the hopes you can walk away with 1 or 2 usable tweaks.
at best one maybe 2 or 3 new tweaks is the most ive found in other peoples work.
 
Taosd's results are what I would expect for anyone doing a fresh install. Ntsokrnl will spike up by default, and then installing Nvidia causes Dxkrnl to freak out (since they interact). In a properly functioning machine, on a clean install, we end up with 3 drivers in total that spike (nvidia, dxkrnl, ntsokrnl).

All the research and testing in the last 6 months make me believe that every single Nvidia user is actually affected by this bug, because parts of this are very easy to replicate, such as a clean install of Windows, and to date I haven't seen a single instance of someone doing a clean install and not having Nvidia issues. It's only on highly modified installs that people have managed to get nvidia spikes down, but then also cannot replicate those fixes (yet).
 
on 1809, 17763.3165 there is a package called "gpu pipeline" or similar. dont know if it exists on other major versions or not, i dont know what it does.
 
sorry for delay, long story cut short..... i have a lamp (usb - one of those magnifier ones for hobbies ) plugged in and was wondering why the flip it wasnt booting after an update....... i turned the lamp off after swearing at the whole system a few times, and lo and behold it booted back to windows . last latmons coming shortly
 
sorry for delay, long story cut short..... i have a lamp (usb - one of those magnifier ones for hobbies ) plugged in and was wondering why the flip it wasnt booting after an update....... i turned the lamp off after swearing at the whole system a few times, and lo and behold it booted back to windows . last latmons coming shortly
You have to disable "Allow the computer to turn off this device to save power". Noob.
 
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