Ubuntu 17.10 Kernel Testing
Intel Core i7-7740K testing with a Gigabyte X299 AORUS Gaming-CF (F2d BIOS) and MSI NVIDIA GP108 2048MB on Ubuntu 17.10 via the Phoronix Test Suite.


i9-7740X: 4.13.0-25 KPTI: 

	Processor: Intel Core i7-7740K @ 4.50GHz (4 Cores / 8 Threads), Motherboard: Gigabyte X299 AORUS Gaming-CF (F2d BIOS), Chipset: Intel Device 591f, Memory: 2 x 4096 MB DDR4-3000MT/s CMK8GX4M2B3000C15, Disk: 120GB Force MP500, Graphics: MSI NVIDIA GP108, Audio: Realtek ALC1220, Network: Intel Connection

	OS: Ubuntu 17.10, Kernel: 4.13.0-25-generic (x86_64), Desktop: GNOME Shell 3.26.2, Display Driver: modesetting 1.19.5, Compiler: GCC 7.2.0, File-System: ext4, Screen Resolution: 800x600

i9-7740X: 4.13.0-30 KPTI + IBPB IBRS: 

	Processor: Intel Core i7-7740K @ 4.50GHz (4 Cores / 8 Threads), Motherboard: Gigabyte X299 AORUS Gaming-CF (F2d BIOS), Chipset: Intel Device 591f, Memory: 2 x 4096 MB DDR4-3000MT/s CMK8GX4M2B3000C15, Disk: 120GB Force MP500, Graphics: MSI NVIDIA GP108, Audio: Realtek ALC1220, Network: Intel Connection

	OS: Ubuntu 17.10, Kernel: 4.13.0-30-generic (x86_64), Desktop: GNOME Shell 3.26.2, Display Driver: modesetting 1.19.5, Compiler: GCC 7.2.0, File-System: ext4, Screen Resolution: 800x600

i9-7740X: 4.15-rc8 KPTI + Full Retpo: 

	Processor: Intel Core i7-7740K @ 4.50GHz (4 Cores / 8 Threads), Motherboard: Gigabyte X299 AORUS Gaming-CF (F2d BIOS), Chipset: Intel Device 591f, Memory: 2 x 4096 MB DDR4-3000MT/s CMK8GX4M2B3000C15, Disk: 120GB Force MP500, Graphics: MSI NVIDIA GP108 2048MB, Audio: Realtek ALC1220, Network: Intel Connection

	OS: Ubuntu 17.10, Kernel: 4.15.0-rc8-retpo-underflow (x86_64) 20180115, Desktop: GNOME Shell 3.26.2, Display Driver: modesetting 1.19.5, Compiler: GCC 7.2.0, File-System: ext4


SQLite 3.8.10.2
Test Target: Default Test Directory
Seconds < Lower Is Better
i9-7740X: 4.13.0-25 KPTI ............. 23.46 |============================
i9-7740X: 4.13.0-30 KPTI + IBPB IBRS . 27.37 |=================================
i9-7740X: 4.15-rc8 KPTI + Full Retpo . 23.00 |============================


Flexible IO Tester 2.1.13
Type: Random Read - IO Engine: Libaio - Buffered: No - Direct: Yes - Block Size: 4KB - Disk Target: Default Test Directory
MB/s > Higher Is Better
i9-7740X: 4.13.0-25 KPTI ............. 434.38 |================================
i9-7740X: 4.13.0-30 KPTI + IBPB IBRS . 363.58 |===========================
i9-7740X: 4.15-rc8 KPTI + Full Retpo . 395.08 |=============================


Flexible IO Tester 2.1.13
Type: Random Read - IO Engine: Libaio - Buffered: No - Direct: Yes - Block Size: 4KB - Disk Target: Default Test Directory
IOPS > Higher Is Better
i9-7740X: 4.13.0-25 KPTI ............. 108592 |================================
i9-7740X: 4.13.0-30 KPTI + IBPB IBRS . 90891  |===========================
i9-7740X: 4.15-rc8 KPTI + Full Retpo . 98765  |=============================


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
i9-7740X: 4.13.0-25 KPTI ............. 290.07 |===========================
i9-7740X: 4.13.0-30 KPTI + IBPB IBRS . 343.47 |================================
i9-7740X: 4.15-rc8 KPTI + Full Retpo . 287.35 |===========================


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
i9-7740X: 4.13.0-25 KPTI ............. 72514 |============================
i9-7740X: 4.13.0-30 KPTI + IBPB IBRS . 85863 |=================================
i9-7740X: 4.15-rc8 KPTI + Full Retpo . 71834 |============================


Flexible IO Tester 2.1.13
Type: Sequential Read - IO Engine: Libaio - Buffered: No - Direct: Yes - Block Size: 4KB - Disk Target: Default Test Directory
MB/s > Higher Is Better
i9-7740X: 4.13.0-25 KPTI ............. 568.03 |================================
i9-7740X: 4.13.0-30 KPTI + IBPB IBRS . 533.95 |==============================
i9-7740X: 4.15-rc8 KPTI + Full Retpo . 526.54 |==============================


Flexible IO Tester 2.1.13
Type: Sequential Read - IO Engine: Libaio - Buffered: No - Direct: Yes - Block Size: 4KB - Disk Target: Default Test Directory
IOPS > Higher Is Better
i9-7740X: 4.13.0-25 KPTI ............. 142004 |================================
i9-7740X: 4.13.0-30 KPTI + IBPB IBRS . 133484 |==============================
i9-7740X: 4.15-rc8 KPTI + Full Retpo . 131632 |==============================


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
i9-7740X: 4.13.0-25 KPTI ............. 323.49 |================================
i9-7740X: 4.13.0-30 KPTI + IBPB IBRS . 288.51 |=============================
i9-7740X: 4.15-rc8 KPTI + Full Retpo . 290.37 |=============================


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
i9-7740X: 4.13.0-25 KPTI ............. 80869 |=================================
i9-7740X: 4.13.0-30 KPTI + IBPB IBRS . 72124 |=============================
i9-7740X: 4.15-rc8 KPTI + Full Retpo . 72588 |==============================


FS-Mark 3.3
Test: 1000 Files, 1MB Size
Files/s > Higher Is Better
i9-7740X: 4.13.0-25 KPTI ............. 203.38 |==============================
i9-7740X: 4.13.0-30 KPTI + IBPB IBRS . 216.43 |================================
i9-7740X: 4.15-rc8 KPTI + Full Retpo . 190.38 |============================


FS-Mark 3.3
Test: 4000 Files, 32 Sub Dirs, 1MB Size
Files/s > Higher Is Better
i9-7740X: 4.13.0-25 KPTI ............. 184.10 |===========================
i9-7740X: 4.13.0-30 KPTI + IBPB IBRS . 202.48 |==============================
i9-7740X: 4.15-rc8 KPTI + Full Retpo . 214.80 |================================


Compile Bench 0.6
Test: Compile
MB/s > Higher Is Better
i9-7740X: 4.13.0-25 KPTI ............. 776.51 |================================
i9-7740X: 4.13.0-30 KPTI + IBPB IBRS . 742.01 |===============================
i9-7740X: 4.15-rc8 KPTI + Full Retpo . 778.17 |================================


Compile Bench 0.6
Test: Initial Create
MB/s > Higher Is Better
i9-7740X: 4.13.0-25 KPTI ............. 491.92 |================================
i9-7740X: 4.13.0-30 KPTI + IBPB IBRS . 496.46 |================================
i9-7740X: 4.15-rc8 KPTI + Full Retpo . 450.33 |=============================


Timed GCC Compilation 7.2
Time To Compile
Seconds < Lower Is Better
i9-7740X: 4.13.0-25 KPTI ............. 906.72 |================================
i9-7740X: 4.13.0-30 KPTI + IBPB IBRS . 906.85 |================================
i9-7740X: 4.15-rc8 KPTI + Full Retpo . 902.24 |================================


Timed Linux Kernel Compilation 4.13
Time To Compile
Seconds < Lower Is Better
i9-7740X: 4.13.0-25 KPTI ............. 106.04 |================================
i9-7740X: 4.13.0-30 KPTI + IBPB IBRS . 106.71 |================================
i9-7740X: 4.15-rc8 KPTI + Full Retpo . 107.02 |================================


Gzip Compression
2GB File Compression
Seconds < Lower Is Better
i9-7740X: 4.13.0-25 KPTI ............. 8.47 |==================================
i9-7740X: 4.13.0-30 KPTI + IBPB IBRS . 8.45 |==================================
i9-7740X: 4.15-rc8 KPTI + Full Retpo . 8.45 |==================================


LZMA Compression
256MB File Compression
Seconds < Lower Is Better
i9-7740X: 4.13.0-25 KPTI ............. 222.29 |===============================
i9-7740X: 4.13.0-30 KPTI + IBPB IBRS . 228.37 |================================
i9-7740X: 4.15-rc8 KPTI + Full Retpo . 221.92 |===============================


Hackbench
Count: 4 - Type: Thread
Seconds < Lower Is Better
i9-7740X: 4.13.0-25 KPTI ............. 16.30 |================================
i9-7740X: 4.13.0-30 KPTI + IBPB IBRS . 16.86 |=================================
i9-7740X: 4.15-rc8 KPTI + Full Retpo . 14.19 |============================


Hackbench
Count: 8 - Type: Thread
Seconds < Lower Is Better
i9-7740X: 4.13.0-25 KPTI ............. 30.77 |=================================
i9-7740X: 4.13.0-30 KPTI + IBPB IBRS . 31.23 |=================================
i9-7740X: 4.15-rc8 KPTI + Full Retpo . 28.52 |==============================


Hackbench
Count: 16 - Type: Thread
Seconds < Lower Is Better
i9-7740X: 4.13.0-25 KPTI ............. 54.11 |===============================
i9-7740X: 4.13.0-30 KPTI + IBPB IBRS . 57.36 |================================
i9-7740X: 4.15-rc8 KPTI + Full Retpo . 58.29 |=================================


Hackbench
Count: 4 - Type: Process
Seconds < Lower Is Better
i9-7740X: 4.13.0-25 KPTI ............. 15.60 |================================
i9-7740X: 4.13.0-30 KPTI + IBPB IBRS . 15.85 |=================================
i9-7740X: 4.15-rc8 KPTI + Full Retpo . 13.73 |=============================


Hackbench
Count: 8 - Type: Process
Seconds < Lower Is Better
i9-7740X: 4.13.0-25 KPTI ............. 29.40 |================================
i9-7740X: 4.13.0-30 KPTI + IBPB IBRS . 30.24 |=================================
i9-7740X: 4.15-rc8 KPTI + Full Retpo . 27.81 |==============================


Hackbench
Count: 16 - Type: Process
Seconds < Lower Is Better
i9-7740X: 4.13.0-25 KPTI ............. 52.08 |===============================
i9-7740X: 4.13.0-30 KPTI + IBPB IBRS . 54.47 |================================
i9-7740X: 4.15-rc8 KPTI + Full Retpo . 56.21 |=================================


Systemd Total Boot Time
Test: Total
ms < Lower Is Better
i9-7740X: 4.13.0-25 KPTI ............. 34460 |================================
i9-7740X: 4.13.0-30 KPTI + IBPB IBRS . 34360 |================================
i9-7740X: 4.15-rc8 KPTI + Full Retpo . 35330 |=================================


Systemd Total Boot Time
Test: Kernel
ms < Lower Is Better
i9-7740X: 4.13.0-25 KPTI ............. 2460 |=========================
i9-7740X: 4.13.0-30 KPTI + IBPB IBRS . 2470 |=========================
i9-7740X: 4.15-rc8 KPTI + Full Retpo . 3300 |==================================


Systemd Total Boot Time
Test: Loader
ms < Lower Is Better
i9-7740X: 4.13.0-25 KPTI ............. 3540 |==================================
i9-7740X: 4.13.0-30 KPTI + IBPB IBRS . 3490 |==================================
i9-7740X: 4.15-rc8 KPTI + Full Retpo . 3460 |=================================


Systemd Total Boot Time
Test: Firmware
ms < Lower Is Better
i9-7740X: 4.13.0-25 KPTI ............. 6870 |==================================
i9-7740X: 4.13.0-30 KPTI + IBPB IBRS . 6810 |==================================
i9-7740X: 4.15-rc8 KPTI + Full Retpo . 6830 |==================================


Systemd Total Boot Time
Test: Userspace
ms < Lower Is Better
i9-7740X: 4.13.0-25 KPTI ............. 21570 |=================================
i9-7740X: 4.13.0-30 KPTI + IBPB IBRS . 21570 |=================================
i9-7740X: 4.15-rc8 KPTI + Full Retpo . 21720 |=================================


PostgreSQL pgbench 10.0
Scaling: Buffer Test - Test: Normal Load - Mode: Read Only
TPS > Higher Is Better
i9-7740X: 4.13.0-25 KPTI ............. 148212.07 |=============================
i9-7740X: 4.13.0-30 KPTI + IBPB IBRS . 148178.21 |=============================
i9-7740X: 4.15-rc8 KPTI + Full Retpo . 145343.10 |============================


PostgreSQL pgbench 10.0
Scaling: Buffer Test - Test: Normal Load - Mode: Read Write
TPS > Higher Is Better
i9-7740X: 4.13.0-25 KPTI ............. 10812.62 |=============================
i9-7740X: 4.13.0-30 KPTI + IBPB IBRS . 11143.56 |==============================
i9-7740X: 4.15-rc8 KPTI + Full Retpo . 10666.01 |=============================


PostgreSQL pgbench 10.0
Scaling: Buffer Test - Test: Heavy Contention - Mode: Read Only
TPS > Higher Is Better
i9-7740X: 4.13.0-25 KPTI ............. 143156.24 |=============================
i9-7740X: 4.13.0-30 KPTI + IBPB IBRS . 141452.30 |=============================
i9-7740X: 4.15-rc8 KPTI + Full Retpo . 141449.67 |=============================


PostgreSQL pgbench 10.0
Scaling: Buffer Test - Test: Heavy Contention - Mode: Read Write
TPS > Higher Is Better
i9-7740X: 4.13.0-25 KPTI ............. 9862.45  |=========================
i9-7740X: 4.13.0-30 KPTI + IBPB IBRS . 10440.18 |===========================
i9-7740X: 4.15-rc8 KPTI + Full Retpo . 11704.70 |==============================


Redis 3.0.1
Test: LPOP
Requests Per Second > Higher Is Better
i9-7740X: 4.13.0-25 KPTI ............. 3750326.92 |============================
i9-7740X: 4.13.0-30 KPTI + IBPB IBRS . 2788282.58 |=====================
i9-7740X: 4.15-rc8 KPTI + Full Retpo . 2744799.17 |====================


Redis 3.0.1
Test: SADD
Requests Per Second > Higher Is Better
i9-7740X: 4.13.0-25 KPTI ............. 2872139.75 |============================
i9-7740X: 4.13.0-30 KPTI + IBPB IBRS . 2795918.75 |===========================
i9-7740X: 4.15-rc8 KPTI + Full Retpo . 2778135.08 |===========================


Redis 3.0.1
Test: LPUSH
Requests Per Second > Higher Is Better
i9-7740X: 4.13.0-25 KPTI ............. 2460835.38 |============================
i9-7740X: 4.13.0-30 KPTI + IBPB IBRS . 2364527.33 |===========================
i9-7740X: 4.15-rc8 KPTI + Full Retpo . 2347728.33 |===========================


Redis 3.0.1
Test: GET
Requests Per Second > Higher Is Better
i9-7740X: 4.13.0-25 KPTI ............. 3593103.92 |============================
i9-7740X: 4.13.0-30 KPTI + IBPB IBRS . 3225962.50 |=========================
i9-7740X: 4.15-rc8 KPTI + Full Retpo . 3209139.67 |=========================


Redis 3.0.1
Test: SET
Requests Per Second > Higher Is Better
i9-7740X: 4.13.0-25 KPTI ............. 2528592.42 |============================
i9-7740X: 4.13.0-30 KPTI + IBPB IBRS . 2461680.00 |===========================
i9-7740X: 4.15-rc8 KPTI + Full Retpo . 2519275.25 |============================


Stress-NG 0.07.26
Test: Crypto
Bogo Ops/s > Higher Is Better
i9-7740X: 4.13.0-25 KPTI ............. 1027.64 |===============================
i9-7740X: 4.13.0-30 KPTI + IBPB IBRS . 1025.50 |===============================
i9-7740X: 4.15-rc8 KPTI + Full Retpo . 1028.28 |===============================


Stress-NG 0.07.26
Test: CPU Stress
Bogo Ops/s > Higher Is Better
i9-7740X: 4.13.0-25 KPTI ............. 2188.78 |===============================
i9-7740X: 4.13.0-30 KPTI + IBPB IBRS . 2186.58 |===============================
i9-7740X: 4.15-rc8 KPTI + Full Retpo . 2192.75 |===============================


Stress-NG 0.07.26
Test: Semaphores
Bogo Ops/s > Higher Is Better
i9-7740X: 4.13.0-25 KPTI ............. 6227448.14 |============================
i9-7740X: 4.13.0-30 KPTI + IBPB IBRS . 6230691.84 |============================
i9-7740X: 4.15-rc8 KPTI + Full Retpo . 6214651.44 |============================


Stress-NG 0.07.26
Test: Socket Activity
Bogo Ops/s > Higher Is Better
i9-7740X: 4.13.0-25 KPTI ............. 6223.62 |===============================
i9-7740X: 4.13.0-30 KPTI + IBPB IBRS . 6266.17 |===============================
i9-7740X: 4.15-rc8 KPTI + Full Retpo . 4033.35 |====================


Stress-NG 0.07.26
Test: Context Switching
Bogo Ops/s > Higher Is Better
i9-7740X: 4.13.0-25 KPTI ............. 3302358.72 |============================
i9-7740X: 4.13.0-30 KPTI + IBPB IBRS . 3128836.50 |===========================
i9-7740X: 4.15-rc8 KPTI + Full Retpo . 2980495.06 |=========================


Stress-NG 0.07.26
Test: System V Message Passing
Bogo Ops/s > Higher Is Better
i9-7740X: 4.13.0-25 KPTI ............. 6620106.71 |=====================
i9-7740X: 4.13.0-30 KPTI + IBPB IBRS . 6209989.34 |====================
i9-7740X: 4.15-rc8 KPTI + Full Retpo . 8727904.66 |============================


NGINX Benchmark 1.9.9
Static Web Page Serving
Requests Per Second > Higher Is Better
i9-7740X: 4.13.0-25 KPTI ............. 51961.55 |==============================
i9-7740X: 4.13.0-30 KPTI + IBPB IBRS . 50610.87 |=============================
i9-7740X: 4.15-rc8 KPTI + Full Retpo . 49283.78 |============================


Apache Benchmark 2.4.7
Static Web Page Serving
Requests Per Second > Higher Is Better
i9-7740X: 4.13.0-25 KPTI ............. 47645.88 |==============================
i9-7740X: 4.13.0-30 KPTI + IBPB IBRS . 46270.01 |=============================
i9-7740X: 4.15-rc8 KPTI + Full Retpo . 44949.19 |============================