Where the hell is the hyperthreading?!

[Cade Squirrel]

Now let me begin with this game is fantastic and a real return to form for FPS games, but why the hell in 2016 do we have a game that can't hyperthread? the game is only using four cores of my eight core CPU, that is pretty pathetic for a new game not to support hyperthreading

id, please fix this
my CPU is an Intel Core i7 2600 @3.40Ghz Quad Core, however it can do 8 core hyperthreading
but Doom only uses four cores

Link to screenshot of cores in use http://steamcommunity.com/sharedfiles/filedetails/?id=684747873

[commander]

Ursprünglich geschrieben von Salamand3r:

Ursprünglich geschrieben von commander:

I used to understand having an older computer for many years.. it was really sad.

Now I understand the complete patience of saving for a nice PC over time.
And to built it custom as I always have.

As do I.

Still sidestepped my point. Again.

You're quoting before all is mentioned.

Btw I noticed you have other comments in this thread, some on the page before, would seem that you are defending this game.. why?
I'm not trying to say that's a bad thing in the time of patches to come, where hopefully things will be fixed.. but right now is not the best time.

But anyways, enough of this chat of bickering.

[II SG93 II]

I absolutely 100% get significantly higher average and minimum FPS with Hyperthreading disabled while playing DOOM; there were times during combat when my FPS would drop with lots of enemies on screen and my GPU usage would dip at the same time as these performance dips. Turning off Hyperthreading on my 3770k at 4.6Ghz has significantly improve raw FPS minimums and averages, and my GPU usage remains pegged at 98-99% with V-Sync off. I ran multiple tests in the same area ( a heavy combat scenario) and my results were easily replicated and consistent. This is absolutely not a "snake oil fix" and I am 100% certain that my performance has improved since turning Hyperthreading off in my BIOS/UEFI. OpenGL does not play well with Hyperthreads and can actually perform worse with them enabled. Hopefully Vulcan can resolve this issue as it is quite annoying to have to turn off Hyperthreading for one game; most other games can still run fine with it enabled even if they don't actually utilize Hyperthreads. DOOM is one of the rare games that actually run worse with Hyperthreading.

Give this a try, guys. Of course your milage may vary, but like I said, turning off Hyperthreading has made a very noticable difference for the better for me.

Using this setup:

Win 7 x64
GTX Titan 6GB
3770K at 4.6Ghz
16GB 2133Mhz RAM
SSD
Latest Nvidia driver insalled (cleaned old driver with DDU)
All other drivers are up-to-date

Lol, I said Hyperthreading a lot.

[moleface237]

Ursprünglich geschrieben von (N☆G) Jackal ★JJ★:

You realize that games JUST started using 4 cores.... there is not a single game right now that makes use of anything over 4. My question is why do you have a gaming rig with 8 cores? You know what 6 to 8 cores are SUPPOSED to be used for? All you done was show the world that you love throwing away money. You are basically the kid in highschool that drove into the parking lot with a corvette not knowing anything besides its 'suppose to go fast'.

This isn't true. I'm not a PC gaming expert (only got into it a couple years ago), but you can specify the # of cores used in some games' config files. GTAV is a good example - I changed the command line from 4 to 6 and got increased CPU usage, tho it didn't affect the game all that heavily aside from a few fps.

[Lucifer17761945]

You peasants are suppose to be part of the PC master race. That means you should know about process lasso, and how the thread scheduler of the OS is retarded. Just because it shows all cores are being utilized doesnt mean its efficient. Why is that you ask? FX CPUs share cache across cores, similar to how i7s share cache across its full fledged core and logical (hyperthreaded core). If the game, and almost all of them released this year do, doesnt support "hyperthreading" which is a lazy way of saying 8 threads because it doesnt really apply to 6 or 8 core i7s and beyond, then hyperthreading enabled will degrade performance because it can only support 4 threads, so if you were to theoretically max out all of them on say an i7 6700k, you would see all cores hitting 50% in a 4 threaded application. You should know logical cores are roughly 30% the performance of true cores, so in essence what you are doing using the default thread scheduler setting from windows is pissing away potential performance by not disabling hyperthreading like an ignorant tard, but using process lasso to only allow the full fledged cores in the case of an i7 correspondent to what the game can handle, thus leaving the logical cores to handle the OS in the background instead of turning them off. Crysis 3, witcher 3, at high resolution for example can become CPU bound with high end GPUs thanks to DX11, and if you have an 8 core i7 for example, you would be akin to having a v8 running on 6 cylinders to use the default and have the thread scheduler swap between logical and full cores with a limitation of 8 possible being used at once when you could simply force all the main cores to the game and get the full potential performance. If you have a 6 core i7 you do the same, but enable 2 logical cores to run the game and turn the rest off. If you have an FX, and its a 4 threaded game, you want to have it run on every other core to free up as much cache resources as possible, though it indeed looks like some applications are actually intelligent enough to already be doing this.

If you are interested in the reduced overhead of DX12 but dislike the optimization of windows 10, I have an alpha state guide, I will eventually get around to finishing up. All the content is there if you look in the description. Im just rather busy lately so if you want to follow through with it, you will have to pay close attention to my revisions.

https://www.youtube.com/watch?v=rdc07vLkKBk

The benchmarks are before I finalized everything that I know is possible and reflect little on the end result which is rather drastic. As such the thumbnail is also outdated as I figured out how to get rid of ram compression. Its much closer to 2 multipliers worth of an overclock scaled to my notebook haswell i7 in pure software changes. Most people are too lazy to take anything from it, but I was hoping the PC master race would start coming around to pushing the potential of their hardware to a new beginning, and for free.

[Nicholas Steel]

Why did you (Lucifer) bump a 2 month old topic? Vulkan wasn't released yet and there have been 2 major updates since.

[Lucifer17761945]

Ursprünglich geschrieben von Nicholas Steel:

Why did you (Lucifer) bump a 2 month old topic? Vulkan wasn't released yet and there have been 2 major updates since.

Because I can, and vulkan being released doesnt magically make DOOM run with 8 threads so why not take gold when its handed to you.