mitigations
Intel Core i7-4770K testing with a Gigabyte Z87X-UD4H-CF (10b BIOS) and Sapphire AMD Radeon RX 470/480/570/570X/580/580X/590 8GB on Arch Linux via the Phoronix Test Suite.


mitigations=off: 

	Processor: Intel Core i7-4770K @ 4.40GHz (4 Cores / 8 Threads), Motherboard: Gigabyte Z87X-UD4H-CF (10b BIOS), Chipset: Intel 4th Gen Core DRAM, Memory: 16384MB, Disk: 250GB Samsung SSD 840, Graphics: Sapphire AMD Radeon RX 470/480/570/570X/580/580X/590 8GB (1366/2000MHz), Audio: Realtek ALC898, Monitor: DELL U2711, Network: Intel I217-V

	OS: Arch Linux, Kernel: 5.1.16-zengonx-ga301c26a90f3-dirty (x86_64), Display Server: X Server 1.20.5, Display Driver: modesetting 1.20.5, OpenGL: 4.5 Mesa 19.1.1 (LLVM 8.0.0), Vulkan: 1.1.90, Compiler: GCC 9.1.0, File-System: btrfs, Screen Resolution: 4480x1440

migitations=off performance: 

	Processor: Intel Core i7-4770K @ 4.40GHz (4 Cores / 8 Threads), Motherboard: Gigabyte Z87X-UD4H-CF (10b BIOS), Chipset: Intel 4th Gen Core DRAM, Memory: 16384MB, Disk: 250GB Samsung SSD 840, Graphics: Sapphire AMD Radeon RX 470/480/570/570X/580/580X/590 8GB (1366/2000MHz), Audio: Realtek ALC898, Monitor: DELL U2711, Network: Intel I217-V

	OS: Arch Linux, Kernel: 5.1.16-zengonx-ga301c26a90f3-dirty (x86_64), Display Server: X Server 1.20.5, Display Driver: modesetting 1.20.5, OpenGL: 4.5 Mesa 19.1.1 (LLVM 8.0.0), Vulkan: 1.1.90, Compiler: GCC 9.1.0, File-System: btrfs, Screen Resolution: 4480x1440

mitigations=on: 

	Processor: Intel Core i7-4770K @ 4.40GHz (4 Cores / 8 Threads), Motherboard: Gigabyte Z87X-UD4H-CF (10b BIOS), Chipset: Intel 4th Gen Core DRAM, Memory: 16384MB, Disk: 250GB Samsung SSD 840, Graphics: Sapphire AMD Radeon RX 470/480/570/570X/580/580X/590 8GB (1366/2000MHz), Audio: Realtek ALC898, Monitor: W2453 + DELL U2711, Network: Intel I217-V

	OS: Arch Linux, Kernel: 5.1.16-zengonx-ga301c26a90f3-dirty (x86_64), Display Server: X Server 1.20.5, Display Driver: modesetting 1.20.5, OpenGL: 4.5 Mesa 19.1.1 (LLVM 8.0.0), Vulkan: 1.1.90, Compiler: GCC 9.1.0, File-System: btrfs, Screen Resolution: 4480x1440

mitigations=on performance: 

	Processor: Intel Core i7-4770K @ 4.40GHz (4 Cores / 8 Threads), Motherboard: Gigabyte Z87X-UD4H-CF (10b BIOS), Chipset: Intel 4th Gen Core DRAM, Memory: 16384MB, Disk: 250GB Samsung SSD 840, Graphics: Sapphire AMD Radeon RX 470/480/570/570X/580/580X/590 8GB (1366/2000MHz), Audio: Realtek ALC898, Monitor: W2453 + DELL U2711, Network: Intel I217-V

	OS: Arch Linux, Kernel: 5.1.16-zengonx-ga301c26a90f3-dirty (x86_64), Display Server: X Server 1.20.5, Display Driver: modesetting 1.20.5, OpenGL: 4.5 Mesa 19.1.1 (LLVM 8.0.0), Vulkan: 1.1.90, Compiler: GCC 9.1.0, File-System: btrfs, Screen Resolution: 4480x1440

mitigations=on stock-kernel: 

	Processor: Intel Core i7-4770K @ 4.40GHz (4 Cores / 8 Threads), Motherboard: Gigabyte Z87X-UD4H-CF (10b BIOS), Chipset: Intel 4th Gen Core DRAM, Memory: 16384MB, Disk: 250GB Samsung SSD 840, Graphics: Sapphire AMD Radeon RX 470/480/570/570X/580/580X/590 8GB (1366/2000MHz), Audio: Realtek ALC898, Monitor: W2453 + DELL U2711, Network: Intel I217-V

	OS: Arch Linux, Kernel: 5.1.16-arch1-1-ARCH (x86_64), Display Server: X Server 1.20.5, Display Driver: modesetting 1.20.5, OpenGL: 4.5 Mesa 19.1.1 (LLVM 8.0.0), Vulkan: 1.1.90, Compiler: GCC 9.1.0, File-System: btrfs, Screen Resolution: 4480x1440


ctx_clock
Context Switch Time
Clocks < Lower Is Better
mitigations=off ............. 211 |================
migitations=off performance . 206 |===============
mitigations=on .............. 587 |============================================
mitigations=on performance .. 588 |============================================
mitigations=on stock-kernel . 590 |============================================