Linux 4.15 I/O Scheduler vs. 4.13 Rough Comparison
Tests by Michael Larabel for a future article on Phoronix.


Linux 4.13: BFQ: 

	Processor: Intel Core i7-5600U @ 3.20GHz (4 Cores), Motherboard: LENOVO 20BSCTO1WW, Chipset: Intel Broadwell-U-OPI, Memory: 2 x 4096 MB DDR3-1600MHz, Disk: 128GB SAMSUNG MZNTE128, Graphics: Intel HD 5500 3072MB (950MHz), Audio: Intel Broadwell-U Audio, Network: Intel Connection + Intel Wireless 7265

	OS: Ubuntu 17.04, Kernel: 4.13.0-999-generic (x86_64) 20170814, Desktop: Unity 7.5.0, Display Server: X Server 1.19.3, Display Driver: modesetting 1.19.3, OpenGL: 4.5 Mesa 17.0.7, Compiler: GCC 6.3.0 20170406, File-System: ext4, Screen Resolution: 1920x1080

Linux 4.13: BFQ low_latency: 

	Processor: Intel Core i7-5600U @ 3.20GHz (4 Cores), Motherboard: LENOVO 20BSCTO1WW, Chipset: Intel Broadwell-U-OPI, Memory: 2 x 4096 MB DDR3-1600MHz, Disk: 128GB SAMSUNG MZNTE128, Graphics: Intel HD 5500 3072MB (950MHz), Audio: Intel Broadwell-U Audio, Network: Intel Connection + Intel Wireless 7265

	OS: Ubuntu 17.04, Kernel: 4.13.0-999-generic (x86_64) 20170814, Desktop: Unity 7.5.0, Display Server: X Server 1.19.3, Display Driver: modesetting 1.19.3, OpenGL: 4.5 Mesa 17.0.7, Compiler: GCC 6.3.0 20170406, File-System: ext4, Screen Resolution: 1920x1080

Linux 4.13: CFQ: 

	Processor: Intel Core i7-5600U @ 3.20GHz (4 Cores), Motherboard: LENOVO 20BSCTO1WW, Chipset: Intel Broadwell-U-OPI, Memory: 2 x 4096 MB DDR3-1600MHz, Disk: 128GB SAMSUNG MZNTE128, Graphics: Intel HD 5500 3072MB (950MHz), Audio: Intel Broadwell-U Audio, Network: Intel Connection + Intel Wireless 7265

	OS: Ubuntu 17.04, Kernel: 4.13.0-999-generic (x86_64) 20170814, Desktop: Unity 7.5.0, Display Server: X Server 1.19.3, Display Driver: modesetting 1.19.3, OpenGL: 4.5 Mesa 17.0.7, Compiler: GCC 6.3.0 20170406, File-System: ext4, Screen Resolution: 1920x1080

Linux 4.13: Deadline: 

	Processor: Intel Core i7-5600U @ 3.20GHz (4 Cores), Motherboard: LENOVO 20BSCTO1WW, Chipset: Intel Broadwell-U-OPI, Memory: 2 x 4096 MB DDR3-1600MHz, Disk: 128GB SAMSUNG MZNTE128, Graphics: Intel HD 5500 3072MB (950MHz), Audio: Intel Broadwell-U Audio, Network: Intel Connection + Intel Wireless 7265

	OS: Ubuntu 17.04, Kernel: 4.13.0-999-generic (x86_64) 20170814, Desktop: Unity 7.5.0, Display Server: X Server 1.19.3, Display Driver: modesetting 1.19.3, OpenGL: 4.5 Mesa 17.0.7, Compiler: GCC 6.3.0 20170406, File-System: ext4, Screen Resolution: 1920x1080

Linux 4.13: Kyber: 

	Processor: Intel Core i7-5600U @ 3.20GHz (4 Cores), Motherboard: LENOVO 20BSCTO1WW, Chipset: Intel Broadwell-U-OPI, Memory: 2 x 4096 MB DDR3-1600MHz, Disk: 128GB SAMSUNG MZNTE128, Graphics: Intel HD 5500 3072MB (950MHz), Audio: Intel Broadwell-U Audio, Network: Intel Connection + Intel Wireless 7265

	OS: Ubuntu 17.04, Kernel: 4.13.0-999-generic (x86_64) 20170814, Desktop: Unity 7.5.0, Display Server: X Server 1.19.3, Display Driver: modesetting 1.19.3, OpenGL: 4.5 Mesa 17.0.7, Compiler: GCC 6.3.0 20170406, File-System: ext4, Screen Resolution: 1920x1080

Linux 4.13: None: 

	Processor: Intel Core i7-5600U @ 3.20GHz (4 Cores), Motherboard: LENOVO 20BSCTO1WW, Chipset: Intel Broadwell-U-OPI, Memory: 2 x 4096 MB DDR3-1600MHz, Disk: 128GB SAMSUNG MZNTE128, Graphics: Intel HD 5500 3072MB (950MHz), Audio: Intel Broadwell-U Audio, Network: Intel Connection + Intel Wireless 7265

	OS: Ubuntu 17.04, Kernel: 4.13.0-999-generic (x86_64) 20170814, Desktop: Unity 7.5.0, Display Server: X Server 1.19.3, Display Driver: modesetting 1.19.3, OpenGL: 4.5 Mesa 17.0.7, Compiler: GCC 6.3.0 20170406, File-System: ext4, Screen Resolution: 1920x1080

Linux 4.15: BFQ: 

	Processor: Intel Core i7-5600U @ 3.20GHz (2 Cores / 4 Threads), Motherboard: LENOVO 20BSCTO1WW, Chipset: Intel Broadwell-U-OPI, Memory: 2 x 4096 MB DDR3-1600MT/s, Disk: 128GB SAMSUNG MZNTE128, Graphics: Intel HD 5500 (950MHz), Audio: Intel Broadwell-U Audio, Network: Intel Connection + Intel Wireless 7265

	OS: Ubuntu 17.10, Kernel: 4.15.0-999-generic (x86_64) 20171203, Desktop: GNOME Shell 3.26.1, Display Server: X Server 1.19.5, Compiler: GCC 7.2.0, File-System: ext4, Screen Resolution: 1920x1080

Linux 4.15: BFQ low_latency: 

	Processor: Intel Core i7-5600U @ 3.20GHz (2 Cores / 4 Threads), Motherboard: LENOVO 20BSCTO1WW, Chipset: Intel Broadwell-U-OPI, Memory: 2 x 4096 MB DDR3-1600MT/s, Disk: 128GB SAMSUNG MZNTE128, Graphics: Intel HD 5500 (950MHz), Audio: Intel Broadwell-U Audio, Network: Intel Connection + Intel Wireless 7265

	OS: Ubuntu 17.10, Kernel: 4.15.0-999-generic (x86_64) 20171203, Desktop: GNOME Shell 3.26.1, Display Server: X Server 1.19.5, Compiler: GCC 7.2.0, File-System: ext4, Screen Resolution: 1920x1080

Linux 4.15: CFQ: 

	Processor: Intel Core i7-5600U @ 3.20GHz (2 Cores / 4 Threads), Motherboard: LENOVO 20BSCTO1WW, Chipset: Intel Broadwell-U-OPI, Memory: 2 x 4096 MB DDR3-1600MT/s, Disk: 128GB SAMSUNG MZNTE128, Graphics: Intel HD 5500 (950MHz), Audio: Intel Broadwell-U Audio, Network: Intel Connection + Intel Wireless 7265

	OS: Ubuntu 17.10, Kernel: 4.15.0-999-generic (x86_64) 20171203, Desktop: GNOME Shell 3.26.1, Display Server: X Server 1.19.5, Compiler: GCC 7.2.0, File-System: ext4, Screen Resolution: 1920x1080

Linux 4.15: Deadline: 

	Processor: Intel Core i7-5600U @ 3.20GHz (2 Cores / 4 Threads), Motherboard: LENOVO 20BSCTO1WW, Chipset: Intel Broadwell-U-OPI, Memory: 2 x 4096 MB DDR3-1600MT/s, Disk: 128GB SAMSUNG MZNTE128, Graphics: Intel HD 5500 (950MHz), Audio: Intel Broadwell-U Audio, Network: Intel Connection + Intel Wireless 7265

	OS: Ubuntu 17.10, Kernel: 4.15.0-999-generic (x86_64) 20171203, Desktop: GNOME Shell 3.26.1, Display Server: X Server 1.19.5, Compiler: GCC 7.2.0, File-System: ext4, Screen Resolution: 1920x1080

Linux 4.15: Kyber: 

	Processor: Intel Core i7-5600U @ 3.20GHz (2 Cores / 4 Threads), Motherboard: LENOVO 20BSCTO1WW, Chipset: Intel Broadwell-U-OPI, Memory: 2 x 4096 MB DDR3-1600MT/s, Disk: 128GB SAMSUNG MZNTE128, Graphics: Intel HD 5500 (950MHz), Audio: Intel Broadwell-U Audio, Network: Intel Connection + Intel Wireless 7265

	OS: Ubuntu 17.10, Kernel: 4.15.0-999-generic (x86_64) 20171203, Desktop: GNOME Shell 3.26.1, Display Server: X Server 1.19.5, Compiler: GCC 7.2.0, File-System: ext4, Screen Resolution: 1920x1080

Linux 4.15: None: 

	Processor: Intel Core i7-5600U @ 3.20GHz (2 Cores / 4 Threads), Motherboard: LENOVO 20BSCTO1WW, Chipset: Intel Broadwell-U-OPI, Memory: 2 x 4096 MB DDR3-1600MT/s, Disk: 128GB SAMSUNG MZNTE128, Graphics: Intel HD 5500 (950MHz), Audio: Intel Broadwell-U Audio, Network: Intel Connection + Intel Wireless 7265

	OS: Ubuntu 17.10, Kernel: 4.15.0-999-generic (x86_64) 20171203, Desktop: GNOME Shell 3.26.1, Display Server: X Server 1.19.5, Compiler: GCC 7.2.0, File-System: ext4, Screen Resolution: 1920x1080


Application Start-up Time 0.1.0
Background I/O Type: Sequential - Background I/O mix: Reads and writes - Application to start: xterm
sec < Lower Is Better
Linux 4.13: BFQ ............. 4.70  |====
Linux 4.13: BFQ low_latency . 0.25  |
Linux 4.13: CFQ ............. 41.22 |====================================
Linux 4.13: Kyber ........... 3.32  |===
Linux 4.13: None ............ 1.38  |=
Linux 4.15: BFQ ............. 48.36 |==========================================
Linux 4.15: BFQ low_latency . 19.22 |=================
Linux 4.15: CFQ ............. 34.73 |==============================
Linux 4.15: Kyber ........... 2.97  |===
Linux 4.15: None ............ 4.92  |====


Application Start-up Time 0.1.0
Background I/O Type: Random - Background I/O mix: Only reads - Application to start: LibreOffice Writer
sec < Lower Is Better
Linux 4.13: BFQ ............. 0.31 |=========================
Linux 4.13: BFQ low_latency . 0.35 |============================
Linux 4.13: CFQ ............. 0.31 |=========================
Linux 4.13: Deadline ........ 0.34 |============================
Linux 4.13: Kyber ........... 0.31 |=========================
Linux 4.13: None ............ 0.31 |=========================
Linux 4.15: BFQ ............. 0.35 |============================
Linux 4.15: BFQ low_latency . 0.34 |============================
Linux 4.15: CFQ ............. 0.53 |===========================================
Linux 4.15: Deadline ........ 0.43 |===================================
Linux 4.15: Kyber ........... 0.36 |=============================
Linux 4.15: None ............ 0.37 |==============================


Application Start-up Time 0.1.0
Background I/O Type: Sequential - Background I/O mix: Only reads - Application to start: Gnome terminal
sec < Lower Is Better
Linux 4.13: BFQ ............. 3.80 |===========================================
Linux 4.13: BFQ low_latency . 0.26 |===
Linux 4.13: CFQ ............. 2.74 |===============================
Linux 4.13: Deadline ........ 3.44 |=======================================
Linux 4.13: Kyber ........... 2.01 |=======================
Linux 4.13: None ............ 2.83 |================================
Linux 4.15: BFQ ............. 3.53 |========================================
Linux 4.15: BFQ low_latency . 0.96 |===========
Linux 4.15: CFQ ............. 3.29 |=====================================
Linux 4.15: Deadline ........ 3.20 |====================================
Linux 4.15: Kyber ........... 3.59 |=========================================
Linux 4.15: None ............ 3.56 |========================================


Application Start-up Time 0.1.0
Background I/O Type: Random - Background I/O mix: Reads and writes - Application to start: Gnome terminal
sec < Lower Is Better
Linux 4.13: BFQ low_latency . 0.44 |==============
Linux 4.13: CFQ ............. 0.16 |=====
Linux 4.13: Deadline ........ 0.84 |============================
Linux 4.13: Kyber ........... 0.77 |=========================
Linux 4.13: None ............ 0.54 |==================
Linux 4.15: BFQ ............. 1.31 |===========================================
Linux 4.15: BFQ low_latency . 0.53 |=================
Linux 4.15: CFQ ............. 0.36 |============
Linux 4.15: Deadline ........ 1.05 |==================================
Linux 4.15: Kyber ........... 1.02 |=================================
Linux 4.15: None ............ 1.13 |=====================================


Application Start-up Time 0.1.0
Background I/O Type: Sequential - Background I/O mix: Only reads - Application to start: LibreOffice Writer
sec < Lower Is Better
Linux 4.13: BFQ low_latency . 3.30 |======================
Linux 4.13: CFQ ............. 4.81 |================================
Linux 4.13: Deadline ........ 5.38 |====================================
Linux 4.13: None ............ 4.85 |=================================
Linux 4.15: BFQ ............. 5.41 |====================================
Linux 4.15: BFQ low_latency . 0.70 |=====
Linux 4.15: CFQ ............. 6.39 |===========================================
Linux 4.15: Deadline ........ 5.02 |==================================
Linux 4.15: Kyber ........... 6.24 |==========================================
Linux 4.15: None ............ 5.24 |===================================


Application Start-up Time 0.1.0
Background I/O Type: Random - Background I/O mix: Reads and writes - Application to start: LibreOffice Writer
sec < Lower Is Better
Linux 4.13: BFQ low_latency . 2.28 |===========================================
Linux 4.13: CFQ ............. 0.29 |=====
Linux 4.13: Deadline ........ 1.48 |============================
Linux 4.13: Kyber ........... 1.16 |======================
Linux 4.13: None ............ 0.86 |================
Linux 4.15: BFQ ............. 1.97 |=====================================
Linux 4.15: BFQ low_latency . 0.71 |=============
Linux 4.15: CFQ ............. 0.63 |============
Linux 4.15: Deadline ........ 1.56 |=============================
Linux 4.15: Kyber ........... 1.62 |===============================
Linux 4.15: None ............ 1.67 |===============================


Application Start-up Time 0.1.0
Background I/O Type: Sequential - Background I/O mix: Reads and writes - Application to start: Gnome terminal
sec < Lower Is Better
Linux 4.13: BFQ low_latency . 0.85  |=
Linux 4.13: Kyber ........... 5.24  |======
Linux 4.13: None ............ 4.94  |======
Linux 4.15: Kyber ........... 36.90 |==========================================
Linux 4.15: None ............ 35.70 |=========================================


Application Start-up Time 0.1.0
Background I/O Type: Sequential - Background I/O mix: Reads and writes - Application to start: LibreOffice Writer
sec < Lower Is Better
Linux 4.13: BFQ low_latency . 3.88 |====================
Linux 4.13: None ............ 8.41 |===========================================


SQLite 3.8.10.2
Test Target: Default Test Directory
Seconds < Lower Is Better
Linux 4.13: BFQ ............. 147.26 |=========================================
Linux 4.13: BFQ low_latency . 137.05 |======================================
Linux 4.13: CFQ ............. 112.34 |===============================
Linux 4.13: Deadline ........ 113.64 |================================
Linux 4.13: Kyber ........... 96.56  |===========================
Linux 4.13: None ............ 89.85  |=========================
Linux 4.15: BFQ ............. 130.71 |====================================
Linux 4.15: BFQ low_latency . 141.27 |=======================================
Linux 4.15: CFQ ............. 92.04  |==========================
Linux 4.15: Deadline ........ 112.94 |===============================
Linux 4.15: Kyber ........... 115.31 |================================
Linux 4.15: None ............ 118.91 |=================================


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 4.13: BFQ ............. 26.92  |=========
Linux 4.13: BFQ low_latency . 89.92  |=============================
Linux 4.13: CFQ ............. 47.83  |================
Linux 4.13: Deadline ........ 70.84  |=======================
Linux 4.13: Kyber ........... 107.41 |===================================
Linux 4.13: None ............ 125.80 |=========================================
Linux 4.15: BFQ ............. 33.07  |===========
Linux 4.15: BFQ low_latency . 67.92  |======================
Linux 4.15: CFQ ............. 104.79 |==================================
Linux 4.15: Deadline ........ 59.60  |===================
Linux 4.15: Kyber ........... 63.47  |=====================
Linux 4.15: None ............ 63.69  |=====================


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 4.13: BFQ ............. 6727  |=========
Linux 4.13: BFQ low_latency . 22477 |==============================
Linux 4.13: CFQ ............. 11953 |================
Linux 4.13: Deadline ........ 17706 |========================
Linux 4.13: Kyber ........... 26849 |====================================
Linux 4.13: None ............ 31446 |==========================================
Linux 4.15: BFQ ............. 8263  |===========
Linux 4.15: BFQ low_latency . 16976 |=======================
Linux 4.15: CFQ ............. 26194 |===================================
Linux 4.15: Deadline ........ 14896 |====================
Linux 4.15: Kyber ........... 15864 |=====================
Linux 4.15: None ............ 15920 |=====================


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
Linux 4.13: BFQ ............. 218.59 |===================
Linux 4.13: BFQ low_latency . 230.13 |====================
Linux 4.13: CFQ ............. 459.44 |=========================================
Linux 4.13: Deadline ........ 458.93 |=========================================
Linux 4.13: Kyber ........... 347.11 |===============================
Linux 4.13: None ............ 206.83 |==================
Linux 4.15: BFQ ............. 461.18 |=========================================
Linux 4.15: BFQ low_latency . 461.27 |=========================================
Linux 4.15: CFQ ............. 459.83 |=========================================
Linux 4.15: Deadline ........ 461.22 |=========================================
Linux 4.15: Kyber ........... 461.75 |=========================================
Linux 4.15: None ............ 212.34 |===================


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
Linux 4.13: BFQ ............. 54644  |===================
Linux 4.13: BFQ low_latency . 57529  |====================
Linux 4.13: CFQ ............. 114857 |=========================================
Linux 4.13: Deadline ........ 114729 |=========================================
Linux 4.13: Kyber ........... 86773  |===============================
Linux 4.13: None ............ 51703  |==================
Linux 4.15: BFQ ............. 115292 |=========================================
Linux 4.15: BFQ low_latency . 115315 |=========================================
Linux 4.15: CFQ ............. 114953 |=========================================
Linux 4.15: Deadline ........ 115302 |=========================================
Linux 4.15: Kyber ........... 115434 |=========================================
Linux 4.15: None ............ 53082  |===================


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 4.13: BFQ ............. 27.72  |========
Linux 4.13: BFQ low_latency . 104.93 |================================
Linux 4.13: CFQ ............. 103.23 |===============================
Linux 4.13: Deadline ........ 103.60 |===============================
Linux 4.13: Kyber ........... 117.30 |====================================
Linux 4.13: None ............ 135.12 |=========================================
Linux 4.15: BFQ ............. 76.97  |=======================
Linux 4.15: BFQ low_latency . 87.90  |===========================
Linux 4.15: CFQ ............. 113.43 |==================================
Linux 4.15: Deadline ........ 86.56  |==========================
Linux 4.15: Kyber ........... 88.70  |===========================
Linux 4.15: None ............ 78.44  |========================


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 4.13: BFQ ............. 6926  |=========
Linux 4.13: BFQ low_latency . 26228 |=================================
Linux 4.13: CFQ ............. 25803 |================================
Linux 4.13: Deadline ........ 25897 |================================
Linux 4.13: Kyber ........... 29322 |====================================
Linux 4.13: None ............ 33777 |==========================================
Linux 4.15: BFQ ............. 19240 |========================
Linux 4.15: BFQ low_latency . 21970 |===========================
Linux 4.15: CFQ ............. 28353 |===================================
Linux 4.15: Deadline ........ 21637 |===========================
Linux 4.15: Kyber ........... 22172 |============================
Linux 4.15: None ............ 19607 |========================


FS-Mark 3.3
Test: 1000 Files, 1MB Size
Files/s > Higher Is Better
Linux 4.13: BFQ ............. 17.80 |==================
Linux 4.13: BFQ low_latency . 23.63 |========================
Linux 4.13: CFQ ............. 25.65 |==========================
Linux 4.13: Deadline ........ 22.37 |=======================
Linux 4.13: Kyber ........... 34.07 |==================================
Linux 4.13: None ............ 41.50 |==========================================
Linux 4.15: BFQ ............. 18.25 |==================
Linux 4.15: BFQ low_latency . 19.43 |====================
Linux 4.15: CFQ ............. 35.75 |====================================
Linux 4.15: Deadline ........ 24.27 |=========================
Linux 4.15: Kyber ........... 21.85 |======================
Linux 4.15: None ............ 20.17 |====================


FS-Mark 3.3
Test: 5000 Files, 1MB Size, 4 Threads
Files/s > Higher Is Better
Linux 4.13: BFQ ............. 26.87 |===============
Linux 4.13: BFQ low_latency . 47.20 |===========================
Linux 4.13: CFQ ............. 42.13 |========================
Linux 4.13: Deadline ........ 35.67 |====================
Linux 4.13: Kyber ........... 61.27 |===================================
Linux 4.13: None ............ 73.87 |==========================================
Linux 4.15: BFQ ............. 23.65 |=============
Linux 4.15: BFQ low_latency . 34.25 |===================
Linux 4.15: CFQ ............. 55.58 |================================
Linux 4.15: Deadline ........ 39.80 |=======================
Linux 4.15: Kyber ........... 42.60 |========================
Linux 4.15: None ............ 43.75 |=========================


BlogBench 1.0
Test: Read
Final Score > Higher Is Better
Linux 4.13: BFQ ............. 612103  |=====================
Linux 4.13: BFQ low_latency . 532632  |==================
Linux 4.13: CFQ ............. 798053  |===========================
Linux 4.13: Deadline ........ 648161  |======================
Linux 4.13: Kyber ........... 581410  |====================
Linux 4.13: None ............ 502903  |=================
Linux 4.15: BFQ ............. 1182301 |========================================
Linux 4.15: BFQ low_latency . 1120920 |======================================
Linux 4.15: CFQ ............. 650369  |======================
Linux 4.15: Deadline ........ 950049  |================================
Linux 4.15: Kyber ........... 776595  |==========================
Linux 4.15: None ............ 632664  |=====================


BlogBench 1.0
Test: Write
Final Score > Higher Is Better
Linux 4.13: BFQ ............. 3162 |======================================
Linux 4.13: BFQ low_latency . 2882 |===================================
Linux 4.13: CFQ ............. 2918 |===================================
Linux 4.13: Deadline ........ 3119 |======================================
Linux 4.13: Kyber ........... 3027 |====================================
Linux 4.13: None ............ 3570 |===========================================
Linux 4.15: BFQ ............. 2042 |=========================
Linux 4.15: BFQ low_latency . 2368 |=============================
Linux 4.15: CFQ ............. 3155 |======================================
Linux 4.15: Deadline ........ 2716 |=================================
Linux 4.15: Kyber ........... 2944 |===================================
Linux 4.15: None ............ 3283 |========================================


IOzone 3.465
Record Size: 4Kb - File Size: 8GB - Disk Test: Write Performance
MB/s > Higher Is Better
Linux 4.13: BFQ ............. 89.60  |=============================
Linux 4.13: BFQ low_latency . 106.07 |===================================
Linux 4.13: CFQ ............. 104.22 |==================================
Linux 4.13: Deadline ........ 92.86  |==============================
Linux 4.13: Kyber ........... 110.47 |====================================
Linux 4.13: None ............ 125.56 |=========================================
Linux 4.15: BFQ ............. 26.75  |=========
Linux 4.15: BFQ low_latency . 46.17  |===============
Linux 4.15: CFQ ............. 82.50  |===========================
Linux 4.15: Deadline ........ 43.08  |==============
Linux 4.15: Kyber ........... 55.69  |==================
Linux 4.15: None ............ 61.86  |====================