KPTI + Retpoline Comparison
Intel Core i9-7980XE testing with a ASUS PRIME X299-A and NV137 2048MB on Ubuntu 17.10 via the Phoronix Test Suite.


Linux 4.14.0 Stock: i9-7980XE: 

	Processor: Intel Core i9-7980XE @ 4.40GHz (18 Cores / 36 Threads), Motherboard: ASUS PRIME X299-A, Chipset: Intel Device 2020, Memory: 16384MB, Disk: 120GB Force MP500, Graphics: NV137 2048MB, Audio: Realtek ALC1220, Monitor: Acer B286HK, Network: Intel Connection

	OS: Ubuntu 17.10, Kernel: 4.14.0-041400-generic (x86_64), Desktop: GNOME Shell 3.26.1, Display Server: Wayland, OpenGL: 4.3 Mesa 17.2.2, Compiler: GCC 7.2.0, File-System: ext4, Screen Resolution: 3840x2160

KPTI + Reptoline: i9-7980XE: 

	Processor: Intel Core i9-7980XE @ 4.40GHz (18 Cores / 36 Threads), Motherboard: ASUS PRIME X299-A, Chipset: Intel Device 2020, Memory: 16384MB, Disk: 120GB Force MP500, Graphics: NV137 2048MB, Audio: Realtek ALC1220, Monitor: Acer B286HK, Network: Intel Connection

	OS: Ubuntu 17.10, Kernel: 4.14.0-phx-retpoline-gcc-retpo (x86_64), Desktop: GNOME Shell 3.26.1, Display Server: Wayland, OpenGL: 4.3 Mesa 17.2.2, Compiler: GCC 7.2.0, File-System: ext4, Screen Resolution: 3840x2160


Flexible IO Tester 2.1.13
Type: Random Write - IO Engine: Libaio - Buffered: No - Direct: Yes - Block Size: 4KB - Disk Target: Default Test Directory
MB/s > Higher Is Better
Linux 4.14.0 Stock: i9-7980XE . 753.24 |=======================================
KPTI + Reptoline: i9-7980XE ... 684.15 |===================================


Flexible IO Tester 2.1.13
Type: Random Write - IO Engine: Libaio - Buffered: No - Direct: Yes - Block Size: 4KB - Disk Target: Default Test Directory
IOPS > Higher Is Better
Linux 4.14.0 Stock: i9-7980XE . 188306 |=======================================
KPTI + Reptoline: i9-7980XE ... 171034 |===================================


Flexible IO Tester 2.1.13
Type: Sequential Write - IO Engine: Libaio - Buffered: No - Direct: Yes - Block Size: 4KB - Disk Target: Default Test Directory
MB/s > Higher Is Better
Linux 4.14.0 Stock: i9-7980XE . 726.28 |=======================================
KPTI + Reptoline: i9-7980XE ... 687.38 |=====================================


Flexible IO Tester 2.1.13
Type: Sequential Write - IO Engine: Libaio - Buffered: No - Direct: Yes - Block Size: 4KB - Disk Target: Default Test Directory
IOPS > Higher Is Better
Linux 4.14.0 Stock: i9-7980XE . 181566 |=======================================
KPTI + Reptoline: i9-7980XE ... 171841 |=====================================


FS-Mark 3.3
Test: 1000 Files, 1MB Size
Files/s > Higher Is Better
Linux 4.14.0 Stock: i9-7980XE . 224.93 |=======================================
KPTI + Reptoline: i9-7980XE ... 185.13 |================================


FS-Mark 3.3
Test: 5000 Files, 1MB Size, 4 Threads
Files/s > Higher Is Better
Linux 4.14.0 Stock: i9-7980XE . 673.93 |=======================================
KPTI + Reptoline: i9-7980XE ... 500.60 |=============================


FS-Mark 3.3
Test: 4000 Files, 32 Sub Dirs, 1MB Size
Files/s > Higher Is Better
Linux 4.14.0 Stock: i9-7980XE . 366.08 |=======================================
KPTI + Reptoline: i9-7980XE ... 264.50 |============================


Compile Bench 0.6
Test: Compile
MB/s > Higher Is Better
Linux 4.14.0 Stock: i9-7980XE . 1728.79 |======================================
KPTI + Reptoline: i9-7980XE ... 1617.36 |====================================


Compile Bench 0.6
Test: Initial Create
MB/s > Higher Is Better
Linux 4.14.0 Stock: i9-7980XE . 768.95 |=======================================
KPTI + Reptoline: i9-7980XE ... 652.25 |=================================


Compile Bench 0.6
Test: Read Compiled Tree
MB/s > Higher Is Better
Linux 4.14.0 Stock: i9-7980XE . 3341.51 |======================================
KPTI + Reptoline: i9-7980XE ... 2901.76 |=================================


Timed GCC Compilation 7.2
Time To Compile
Seconds < Lower Is Better
Linux 4.14.0 Stock: i9-7980XE . 761.83 |====================================
KPTI + Reptoline: i9-7980XE ... 817.09 |=======================================


Timed Linux Kernel Compilation 4.13
Time To Compile
Seconds < Lower Is Better
Linux 4.14.0 Stock: i9-7980XE . 37.95 |=======================================
KPTI + Reptoline: i9-7980XE ... 39.23 |========================================


PostgreSQL pgbench 10.0
Scaling: Buffer Test - Test: Normal Load - Mode: Read Write
TPS > Higher Is Better
Linux 4.14.0 Stock: i9-7980XE . 7756.95 |======================================
KPTI + Reptoline: i9-7980XE ... 6594.40 |================================


Redis 3.0.1
Test: LPOP
Requests Per Second > Higher Is Better
Linux 4.14.0 Stock: i9-7980XE . 2114991.47 |===================================
KPTI + Reptoline: i9-7980XE ... 1876687.36 |===============================


Redis 3.0.1
Test: SADD
Requests Per Second > Higher Is Better
Linux 4.14.0 Stock: i9-7980XE . 2334920.58 |===================================
KPTI + Reptoline: i9-7980XE ... 2162591.79 |================================


Redis 3.0.1
Test: LPUSH
Requests Per Second > Higher Is Better
Linux 4.14.0 Stock: i9-7980XE . 2227561.19 |===================================
KPTI + Reptoline: i9-7980XE ... 1920204.67 |==============================


Redis 3.0.1
Test: GET
Requests Per Second > Higher Is Better
Linux 4.14.0 Stock: i9-7980XE . 2722404.67 |===================================
KPTI + Reptoline: i9-7980XE ... 2428046.71 |===============================


Redis 3.0.1
Test: SET
Requests Per Second > Higher Is Better
Linux 4.14.0 Stock: i9-7980XE . 2229753.79 |===================================
KPTI + Reptoline: i9-7980XE ... 2005842.48 |===============================


NGINX Benchmark 1.9.9
Static Web Page Serving
Requests Per Second > Higher Is Better
Linux 4.14.0 Stock: i9-7980XE . 54668.12 |=====================================
KPTI + Reptoline: i9-7980XE ... 42867.70 |=============================


Apache Benchmark 2.4.7
Static Web Page Serving
Requests Per Second > Higher Is Better
Linux 4.14.0 Stock: i9-7980XE . 51621.45 |=====================================
KPTI + Reptoline: i9-7980XE ... 35205.88 |=========================