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| System Name | Night Rider | Mini LAN PC | Workhorse |
|---|---|
| Processor | AMD R7 5800X3D | Ryzen 1600X | i7 970 |
| Motherboard | MSi AM4 Pro Carbon | GA- | Gigabyte EX58-UD5 |
| Cooling | Noctua U9S Twin Fan| Stock Cooler, Copper Core)| Big shairkan B |
| Memory | 2x8GB DDR4 G.Skill Ripjaws 3600MHz| 2x8GB Corsair 3000 | 6x2GB DDR3 1300 Corsair |
| Video Card(s) | MSI AMD 6750XT | 6500XT | MSI RX 580 8GB |
| Storage | 1TB WD Black NVME / 250GB SSD /2TB WD Black | 500GB SSD WD, 2x1TB, 1x750 | WD 500 SSD/Seagate 320 |
| Display(s) | LG 27" 1440P| Samsung 20" S20C300L/DELL 15" | 22" DELL/19"DELL |
| Case | LIAN LI PC-18 | Mini ATX Case (custom) | Atrix C4 9001 |
| Audio Device(s) | Onboard | Onbaord | Onboard |
| Power Supply | Silverstone 850 | Silverstone Mini 450W | Corsair CX-750 |
| Mouse | Coolermaster Pro | Rapoo V900 | Gigabyte 6850X |
| Keyboard | MAX Keyboard Nighthawk X8 | Creative Fatal1ty eluminx | Some POS Logitech |
| Software | Windows 10 Pro 64 | Windows 10 Pro 64 | Windows 7 Pro 64/Windows 10 Home |
Not sure if this has been posted before but I thought Id post it anyway. Enjoy 
Fast Zombies
One factor in creating a good gaming experience is throughput. This post discusses some of what we’ve learned about the performance of our games running on Linux.
As any software developer can tell you, performance is a complicated issue. In the interests of simplicity, we’ll concern ourselves with the following high-end configuration:
Hardware
Intel Core i7 3930k
NVIDIA GeForce GTX 680
32 GB RAM
Software
Windows 7 Service Pack 1 64-bit
Left 4 Dead 2
Ubuntu 12.04 32-bit
We are using a 32-bit version of Linux temporarily and will run on 64-bit Linux later.
Running Left 4 Dead 2 on Windows 7 with Direct3D drivers, we get 270.6 FPS as a baseline. The data is generated from an internal test case.
When we started with Linux, the initial version we got up and running was at 6 FPS. This is typical of an initial successful port to a new platform.
Performance improvements fall into several categories:
Modifying our game to work better with the kernel
Modifying our game to work better with OpenGL
Optimizing the graphics driver
An example of the first category would be changing our memory allocator to use more appropriate Linux functions. This was achieved by implementing the Source engine small block heap to work under Linux. The second category would include reducing overhead in calling OpenGL, and extending our renderer with new interfaces for better encapsulation of OpenGL and Direct3D.
The third category is especially interesting because it involves working with hardware manufacturers to identify issues in their drivers and, as a result, improving the public driver which benefits all games. Identifying driver stalls and adding multithreading support in the driver are two examples of changes that were the result of this teamwork.
After this work, Left 4 Dead 2 is running at 315 FPS on Linux. That the Linux version runs faster than the Windows version (270.6) seems a little counter-intuitive, given the greater amount of time we have spent on the Windows version. However, it does speak to the underlying efficiency of the kernel and OpenGL. Interestingly, in the process of working with hardware vendors we also sped up the OpenGL implementation on Windows. Left 4 Dead 2 is now running at 303.4 FPS with that configuration.
OpenGL versus Direct3D on Windows 7
This experience lead to the question: why does an OpenGL version of our game run faster than Direct3D on Windows 7? It appears that it’s not related to multitasking overhead. We have been doing some fairly close analysis and it comes down to a few additional microseconds overhead per batch in Direct3D which does not affect OpenGL on Windows. Now that we know the hardware is capable of more performance, we will go back and figure out how to mitigate this effect under Direct3D.
Working with hardware vendors
We’ve been working with NVIDIA, AMD, and Intel to improve graphic driver performance on Linux. They have all been great to work with and have been very committed to having engineers on-site working with our engineers, carefully analyzing the data we see. We have had very rapid turnaround on any bugs we find and it has been invaluable to have people who understand the game, the renderer, the driver, and the hardware working alongside us when attacking these performance issues.
This is a great example of the benefits that are the result of close coordination between software and hardware developers and should provide value to the Linux community at large.
Source: http://blogs.valvesoftware.com/linux/faster-zombies/
Fast Zombies
One factor in creating a good gaming experience is throughput. This post discusses some of what we’ve learned about the performance of our games running on Linux.
As any software developer can tell you, performance is a complicated issue. In the interests of simplicity, we’ll concern ourselves with the following high-end configuration:
Hardware
Intel Core i7 3930k
NVIDIA GeForce GTX 680
32 GB RAM
Software
Windows 7 Service Pack 1 64-bit
Left 4 Dead 2
Ubuntu 12.04 32-bit
We are using a 32-bit version of Linux temporarily and will run on 64-bit Linux later.
Running Left 4 Dead 2 on Windows 7 with Direct3D drivers, we get 270.6 FPS as a baseline. The data is generated from an internal test case.
When we started with Linux, the initial version we got up and running was at 6 FPS. This is typical of an initial successful port to a new platform.
Performance improvements fall into several categories:
Modifying our game to work better with the kernel
Modifying our game to work better with OpenGL
Optimizing the graphics driver
An example of the first category would be changing our memory allocator to use more appropriate Linux functions. This was achieved by implementing the Source engine small block heap to work under Linux. The second category would include reducing overhead in calling OpenGL, and extending our renderer with new interfaces for better encapsulation of OpenGL and Direct3D.
The third category is especially interesting because it involves working with hardware manufacturers to identify issues in their drivers and, as a result, improving the public driver which benefits all games. Identifying driver stalls and adding multithreading support in the driver are two examples of changes that were the result of this teamwork.
After this work, Left 4 Dead 2 is running at 315 FPS on Linux. That the Linux version runs faster than the Windows version (270.6) seems a little counter-intuitive, given the greater amount of time we have spent on the Windows version. However, it does speak to the underlying efficiency of the kernel and OpenGL. Interestingly, in the process of working with hardware vendors we also sped up the OpenGL implementation on Windows. Left 4 Dead 2 is now running at 303.4 FPS with that configuration.
OpenGL versus Direct3D on Windows 7
This experience lead to the question: why does an OpenGL version of our game run faster than Direct3D on Windows 7? It appears that it’s not related to multitasking overhead. We have been doing some fairly close analysis and it comes down to a few additional microseconds overhead per batch in Direct3D which does not affect OpenGL on Windows. Now that we know the hardware is capable of more performance, we will go back and figure out how to mitigate this effect under Direct3D.
Working with hardware vendors
We’ve been working with NVIDIA, AMD, and Intel to improve graphic driver performance on Linux. They have all been great to work with and have been very committed to having engineers on-site working with our engineers, carefully analyzing the data we see. We have had very rapid turnaround on any bugs we find and it has been invaluable to have people who understand the game, the renderer, the driver, and the hardware working alongside us when attacking these performance issues.
This is a great example of the benefits that are the result of close coordination between software and hardware developers and should provide value to the Linux community at large.
Source: http://blogs.valvesoftware.com/linux/faster-zombies/
