Shader compilation freezes the system

[koresh-krasa]

Your system information

• Steam client version (build number or date): 1676336721 Feb 14 2023, at 00:47:47
• Distribution (e.g. Ubuntu): Feodara Silverblue 37
• Opted into Steam client beta?: No
• Have you checked for system updates?: Yes

Please describe your issue in as much detail as possible:

On a laptop if steam is launched with dGPU from gnome application launcher or with switcherooctl shader compilation takes more cpu and ram to compile shaders (This can cause whole system to freeze). If steam is started with DRI_PRIME=1 than shader compilation is almost instant and uses little resources.

Steps for reproducing this issue:

1. start steam with DRI_PRIME=1
2. run shader_prune
3. start the game
4. start steam with switcherooctl dGPU option (DRI_PRIME=pci-0000_03_00_0 for example)
5. run shader_prune
6. start the game

On step 3 shader compilation is quick
On step 6 shader compilation can freeze the system

System info

Processor Information:
      CPU Vendor:  AuthenticAMD
      CPU Brand:  AMD Ryzen 9 5900HX with Radeon Graphics        
      CPU Family:  0x19
      CPU Model:  0x50
      CPU Stepping:  0x0
      CPU Type:  0x0
      Speed:  4888 Mhz
      16 logical processors
      8 physical processors
      HyperThreading:  Supported
      FCMOV:  Supported
      SSE2:  Supported
      SSE3:  Supported
      SSSE3:  Supported
      SSE4a:  Supported
      SSE41:  Supported
      SSE42:  Supported
      AES:  Supported
      AVX:  Supported
      AVX2:  Supported
      AVX512F:  Unsupported
      AVX512PF:  Unsupported
      AVX512ER:  Unsupported
      AVX512CD:  Unsupported
      AVX512VNNI:  Unsupported
      SHA:  Supported
      CMPXCHG16B:  Supported
      LAHF/SAHF:  Supported
      PrefetchW:  Unsupported
  
  Operating System Version:
      Freedesktop.org SDK 22.08 (Flatpak runtime) (64 bit)
      Kernel Name:  Linux
      Kernel Version:  6.1.11-200.fc37.x86_64
      X Server Vendor:  The X.Org Foundation
      X Server Release:  12201008
      X Window Manager:  GNOME Shell
      Steam Runtime Version:  steam-runtime_0.20221019.0
  
  Video Card:
      Driver:  AMD AMD Radeon RX 6800M (navi22, LLVM 15.0.7, DRM 3.49, 6.1.11-200.fc37.x86_64)
      Driver Version:  4.6 (Compatibility Profile) Mesa 22.3.4 (git-a5ffb70f86)
      OpenGL Version: 4.6
      Desktop Color Depth: 24 bits per pixel
      Monitor Refresh Rate: 59 Hz
      VendorID:  0x1002
      DeviceID:  0x1638
      Revision Not Detected
      Number of Monitors:  2
      Number of Logical Video Cards:  1
      Primary Display Resolution:  2560 x 1440
      Desktop Resolution: 4480 x 1440
      Primary Display Size: 13.39" x 7.48" (15.31" diag)
                                              34.0cm x 19.0cm (38.9cm diag)
      Primary VRAM: 12288 MB