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Feral have now fixed the OpenGL performance regression in Mad Max

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The OpenGL performance regression that made Vulkan look like it annihilated OpenGL in Mad Max's recent Beta has now been fixed.

As a small reminder, Mad Max currently has a public beta for owners of the game to test out Feral's new Vulkan version. You can enter "livelongandprosper" to get access to the "vulkan_beta" branch.

From the notes on Feral's Facebook post:
QuoteFixed performance regression in OpenGL renderer. Vulkan should now only be significantly ahead in situations where GL was unable to keep the GPU busy.

Great to see Feral very quickly act on feedback from us and others about the performance issues.

They also note they are currently looking into these issues:
Quote
  • Performance issue with kernel 4.9+ related to online mode.
  • Crash on boot on NVIDIA without GLVND (e.g. Debian). Can be worked around by installing libgl1-nvidia-glvnd-glx on Debian.


Any feedback about the Vulkan Mad Max beta should be sent to: vulkanfeedback@feralinteractive.com

How have you been finding the Vulkan version? Article taken from GamingOnLinux.com.
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24 comments
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Swiftpaw 4 Apr, 2017
You'd think that if thread movement between cores couldn't be done without hurting performance, that the feature would be turned off by default and perhaps only enabled if one core is overheating and the others aren't.
Mohandevir 4 Apr, 2017
Quoting: Anza
Quoting: Mohandevir
Quoting: HollowSoldierOfficial patch notes:

"Marketing strategy didn't work. F...k."

I can't believe Feral did that on purpose and tought nobody would notice the regression. They might have made a mistake and it made it to the release (because the goal of the beta was to implement Vulkan in the first place) and they got caught in their enthusiasm. I hope it is such.

Anyway, all I'm hoping for is for them to fix the fps drops that many are experiencing. Every 10 seconds or so I see skipped frames and then it's buttery smooth again. Really annoying. And it doesn't seem to be linked to sudden heavy burdens... It's just random, in the middle of nowhere, while driving with nothing in sight (example) and it cycles again, ±10 seconds later.

If you have 4.9 kernel, it might be problem that threads keep moving between cores which causes massive framedrop while that happens. It's possible to verify if that's the case with htop as it shows threads by default and also shows assigned core for each thread.

I made script that can be used as workaround: https://github.com/anzah1/task-affinity-balancer

I think I'll made sure that Feral Interactive is also aware of the issue as fix should be relatively simple. Problem might have been there with earlier kernel version, but I don't think it was this frequent.

Thanks! I'll give it a shot. I'm on Ubuntu 16.04. Who knows, it might be something they backported from 16.10...


Last edited by Mohandevir on 4 April 2017 at 4:20 pm UTC
MaCroX95 4 Apr, 2017
Quoting: Swiftpaw
Quoting: HollowSoldierOfficial patch notes:

"Marketing strategy didn't work. F...k."

Hahaha. Their Vulkan renderer is still definitely faster which is great, but it's too bad it's still 40-50% the speed of the DX version, but that's ports for you and any improvement to ports is good. I just hope we start getting pure native Vulkan releases soon especially now that Unity3D 5.6 is out with Vulkan.

40-50% of Dx11 performance? Any proof to back that up? For my GPU gtx970 if I don't count the drops it works on 90% of the DX11 performance which is awesome... On dx11 it was spinning around 105 fps and now with vulkan on Linux it sticks at around 90-95 fps even goes higher into 100s at times... so I don't have such experience, or did you just make a terrible guess?
Eike 4 Apr, 2017
Quoting: Swiftpaw
Quoting: HollowSoldierOfficial patch notes:

"Marketing strategy didn't work. F...k."

Hahaha. Their Vulkan renderer is still definitely faster which is great, but it's too bad it's still 40-50% the speed of the DX version, but that's ports for you and any improvement to ports is good. I just hope we start getting pure native Vulkan releases soon especially now that Unity3D 5.6 is out with Vulkan.

It seems you were the one who found the problem? Thanks for pointing out!
Eike 4 Apr, 2017
I can confirm that installing libgl1-nvidia-glvnd-glx fixes the crash on startup on Debian!
Thanks Feral!
That doesn't feel like a non-supported system at all. :)
Skiski 4 Apr, 2017
I've just updated to kernel 4.10 (4.10.8-100.fc24.x86_64) and I have way less stuttering. I don't know if it's thanks to the new kernel or the latest patch of the game.
I haven't tried today, but I've been able to play the game without stuttering just by using the offline mode of steam. I don't why this solve the kernel problem or even if it is related. But in offline mode, I was able to max every setting and I'm never under 40 FPS and usually between 50 and 60.

And I'm really enjoying the game so far.
Anza 4 Apr, 2017
Quoting: Mohandevir
Quoting: Anza
Quoting: Mohandevir
Quoting: HollowSoldierOfficial patch notes:

"Marketing strategy didn't work. F...k."

I can't believe Feral did that on purpose and tought nobody would notice the regression. They might have made a mistake and it made it to the release (because the goal of the beta was to implement Vulkan in the first place) and they got caught in their enthusiasm. I hope it is such.

Anyway, all I'm hoping for is for them to fix the fps drops that many are experiencing. Every 10 seconds or so I see skipped frames and then it's buttery smooth again. Really annoying. And it doesn't seem to be linked to sudden heavy burdens... It's just random, in the middle of nowhere, while driving with nothing in sight (example) and it cycles again, ±10 seconds later.

If you have 4.9 kernel, it might be problem that threads keep moving between cores which causes massive framedrop while that happens. It's possible to verify if that's the case with htop as it shows threads by default and also shows assigned core for each thread.

I made script that can be used as workaround: https://github.com/anzah1/task-affinity-balancer

I think I'll made sure that Feral Interactive is also aware of the issue as fix should be relatively simple. Problem might have been there with earlier kernel version, but I don't think it was this frequent.

Thanks! I'll give it a shot. I'm on Ubuntu 16.04. Who knows, it might be something they backported from 16.10...

Looks like Ubuntu has 4.8 kernel, which I didn't test. I upgraded actually from 4.4 to 4.9, so it's entirely possible that problem appeared in some kernel version between those two.

It would be interesting to know if earlier kernel is also affected. Or maybe problem root cause is something else.
Anza 4 Apr, 2017
Quoting: SkiskiI've just updated to kernel 4.10 (4.10.8-100.fc24.x86_64) and I have way less stuttering. I don't know if it's thanks to the new kernel or the latest patch of the game.
I haven't tried today, but I've been able to play the game without stuttering just by using the offline mode of steam. I don't why this solve the kernel problem or even if it is related. But in offline mode, I was able to max every setting and I'm never under 40 FPS and usually between 50 and 60.

And I'm really enjoying the game so far.

Too bad Steam crashes when I try to enable offline mode. I would have been nice to test if offline mode workaround would work too.
Tuxee 4 Apr, 2017
With this patch the differences between OpenGL and Vulkan have become quite small (< 5%) for 3 of the 4 benchmarks. The "stronghold" benchmark however is still a lot faster: 68fps vs. 50fps. It is also the most demanding one, since all other benchmarks yield around 100fps.
Skiski 4 Apr, 2017
Quoting: Anza
Quoting: SkiskiI've just updated to kernel 4.10 (4.10.8-100.fc24.x86_64) and I have way less stuttering. I don't know if it's thanks to the new kernel or the latest patch of the game.
I haven't tried today, but I've been able to play the game without stuttering just by using the offline mode of steam. I don't why this solve the kernel problem or even if it is related. But in offline mode, I was able to max every setting and I'm never under 40 FPS and usually between 50 and 60.

And I'm really enjoying the game so far.

Too bad Steam crashes when I try to enable offline mode. I would have been nice to test if offline mode workaround would work too.

Just try unconnecting from the internet, that's what I did the first time and it worked.
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