Linux 4.15 I/O Scheduler

Tests by Michael Larabel for a future article on Phoronix.

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Linux 4.15: BFQ
December 06 2017
 
Linux 4.15: BFQ low_latency
December 06 2017
 
Linux 4.15: CFQ
December 04 2017
 
Linux 4.15: Deadline
December 04 2017
 
Linux 4.15: Kyber
December 05 2017
 
Linux 4.15: None
December 05 2017
 
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{ "title": "Linux 4.15 I\/O Scheduler", "last_modified": "2017-12-07 10:24:10", "description": "Tests by Michael Larabel for a future article on Phoronix.", "systems": { "Linux 4.15: CFQ": { "identifier": "Linux 4.15: CFQ", "hardware": { "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" }, "software": { "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" }, "user": "root", "timestamp": "2017-12-04 10:37:11", "data": { "compiler-configuration": "--build=x86_64-linux-gnu --disable-vtable-verify --disable-werror --enable-checking=release --enable-clocale=gnu --enable-default-pie --enable-gnu-unique-object --enable-languages=c,ada,c++,go,brig,d,fortran,objc,obj-c++ --enable-libmpx --enable-libstdcxx-debug --enable-libstdcxx-time=yes --enable-multiarch --enable-multilib --enable-nls --enable-objc-gc=auto --enable-offload-targets=nvptx-none --enable-plugin --enable-shared --enable-threads=posix --host=x86_64-linux-gnu --program-prefix=x86_64-linux-gnu- --target=x86_64-linux-gnu --with-abi=m64 --with-arch-32=i686 --with-default-libstdcxx-abi=new --with-gcc-major-version-only --with-multilib-list=m32,m64,mx32 --with-target-system-zlib --with-tune=generic --without-cuda-driver -v", "disk-scheduler": "CFQ", "disk-mount-options": "data=ordered,errors=remount-ro,relatime,rw", "cpu-scaling-governor": "intel_pstate powersave" } }, "Linux 4.15: Deadline": { "identifier": "Linux 4.15: Deadline", "hardware": { "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" }, "software": { "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" }, "user": "root", "timestamp": "2017-12-04 18:18:06", "data": { "compiler-configuration": "--build=x86_64-linux-gnu --disable-vtable-verify --disable-werror --enable-checking=release --enable-clocale=gnu --enable-default-pie --enable-gnu-unique-object --enable-languages=c,ada,c++,go,brig,d,fortran,objc,obj-c++ --enable-libmpx --enable-libstdcxx-debug --enable-libstdcxx-time=yes --enable-multiarch --enable-multilib --enable-nls --enable-objc-gc=auto --enable-offload-targets=nvptx-none --enable-plugin --enable-shared --enable-threads=posix --host=x86_64-linux-gnu --program-prefix=x86_64-linux-gnu- --target=x86_64-linux-gnu --with-abi=m64 --with-arch-32=i686 --with-default-libstdcxx-abi=new --with-gcc-major-version-only --with-multilib-list=m32,m64,mx32 --with-target-system-zlib --with-tune=generic --without-cuda-driver -v", "disk-scheduler": "DEADLINE", "disk-mount-options": "data=ordered,errors=remount-ro,relatime,rw", "cpu-scaling-governor": "intel_pstate powersave" } }, "Linux 4.15: None": { "identifier": "Linux 4.15: None", "hardware": { "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" }, "software": { "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" }, "user": "root", "timestamp": "2017-12-05 07:26:14", "data": { "compiler-configuration": "--build=x86_64-linux-gnu --disable-vtable-verify --disable-werror --enable-checking=release --enable-clocale=gnu --enable-default-pie --enable-gnu-unique-object --enable-languages=c,ada,c++,go,brig,d,fortran,objc,obj-c++ --enable-libmpx --enable-libstdcxx-debug --enable-libstdcxx-time=yes --enable-multiarch --enable-multilib --enable-nls --enable-objc-gc=auto --enable-offload-targets=nvptx-none --enable-plugin --enable-shared --enable-threads=posix --host=x86_64-linux-gnu --program-prefix=x86_64-linux-gnu- --target=x86_64-linux-gnu --with-abi=m64 --with-arch-32=i686 --with-default-libstdcxx-abi=new --with-gcc-major-version-only --with-multilib-list=m32,m64,mx32 --with-target-system-zlib --with-tune=generic --without-cuda-driver -v", "disk-scheduler": "NONE", "disk-mount-options": "data=ordered,errors=remount-ro,relatime,rw", "cpu-scaling-governor": "intel_pstate powersave" } }, "Linux 4.15: Kyber": { "identifier": "Linux 4.15: Kyber", "hardware": { "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" }, "software": { "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" }, "user": "root", "timestamp": "2017-12-05 12:55:33", "data": { "compiler-configuration": "--build=x86_64-linux-gnu --disable-vtable-verify --disable-werror --enable-checking=release --enable-clocale=gnu --enable-default-pie --enable-gnu-unique-object --enable-languages=c,ada,c++,go,brig,d,fortran,objc,obj-c++ --enable-libmpx --enable-libstdcxx-debug --enable-libstdcxx-time=yes --enable-multiarch --enable-multilib --enable-nls --enable-objc-gc=auto --enable-offload-targets=nvptx-none --enable-plugin --enable-shared --enable-threads=posix --host=x86_64-linux-gnu --program-prefix=x86_64-linux-gnu- --target=x86_64-linux-gnu --with-abi=m64 --with-arch-32=i686 --with-default-libstdcxx-abi=new --with-gcc-major-version-only --with-multilib-list=m32,m64,mx32 --with-target-system-zlib --with-tune=generic --without-cuda-driver -v", "disk-scheduler": "KYBER", "disk-mount-options": "data=ordered,errors=remount-ro,relatime,rw", "cpu-scaling-governor": "intel_pstate powersave" } }, "Linux 4.15: BFQ low_latency": { "identifier": "Linux 4.15: BFQ low_latency", "hardware": { "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" }, "software": { "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" }, "user": "root", "timestamp": "2017-12-06 05:23:05", "data": { "compiler-configuration": "--build=x86_64-linux-gnu --disable-vtable-verify --disable-werror --enable-checking=release --enable-clocale=gnu --enable-default-pie --enable-gnu-unique-object --enable-languages=c,ada,c++,go,brig,d,fortran,objc,obj-c++ --enable-libmpx --enable-libstdcxx-debug --enable-libstdcxx-time=yes --enable-multiarch --enable-multilib --enable-nls --enable-objc-gc=auto --enable-offload-targets=nvptx-none --enable-plugin --enable-shared --enable-threads=posix --host=x86_64-linux-gnu --program-prefix=x86_64-linux-gnu- --target=x86_64-linux-gnu --with-abi=m64 --with-arch-32=i686 --with-default-libstdcxx-abi=new --with-gcc-major-version-only --with-multilib-list=m32,m64,mx32 --with-target-system-zlib --with-tune=generic --without-cuda-driver -v", "disk-scheduler": "BFQ", "disk-mount-options": "data=ordered,errors=remount-ro,relatime,rw", "cpu-scaling-governor": "intel_pstate powersave" } }, "Linux 4.15: BFQ": { "identifier": "Linux 4.15: BFQ", "hardware": { "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" }, "software": { "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" }, "user": "root", "timestamp": "2017-12-06 10:42:39", "data": { "compiler-configuration": "--build=x86_64-linux-gnu --disable-vtable-verify --disable-werror --enable-checking=release --enable-clocale=gnu --enable-default-pie --enable-gnu-unique-object --enable-languages=c,ada,c++,go,brig,d,fortran,objc,obj-c++ --enable-libmpx --enable-libstdcxx-debug --enable-libstdcxx-time=yes --enable-multiarch --enable-multilib --enable-nls --enable-objc-gc=auto --enable-offload-targets=nvptx-none --enable-plugin --enable-shared --enable-threads=posix --host=x86_64-linux-gnu --program-prefix=x86_64-linux-gnu- --target=x86_64-linux-gnu --with-abi=m64 --with-arch-32=i686 --with-default-libstdcxx-abi=new --with-gcc-major-version-only --with-multilib-list=m32,m64,mx32 --with-target-system-zlib --with-tune=generic --without-cuda-driver -v", "disk-scheduler": "BFQ", "disk-mount-options": "data=ordered,errors=remount-ro,relatime,rw", "cpu-scaling-governor": "intel_pstate powersave" } } }, "results": { "3764654bc356b2b28a225d1ca2f28551bb37dd54": { "identifier": "pts\/startup-time-1.0.0", "title": "Application Start-up Time", "app_version": "0.1.0", "arguments": "seq r lowriter", "description": "Background I\/O Type: Sequential - Background I\/O mix: Only reads - Application to start: LibreOffice Writer", "scale": "sec", "proportion": "LIB", "display_format": "BAR_GRAPH", "results": { "Linux 4.15: CFQ": { "value": 6.38999999999999968025576890795491635799407958984375, "raw_values": [ 6.4000000000000003552713678800500929355621337890625, 6.38999999999999968025576890795491635799407958984375, 6.38666999999999962511765261297114193439483642578125 ] }, "Linux 4.15: Deadline": { "value": 5.019999999999999573674358543939888477325439453125, "raw_values": [ 5.0099999999999997868371792719699442386627197265625, 5.0033300000000000551381162949837744235992431640625, 5.03666999999999998038902049302123486995697021484375 ] }, "Linux 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0.403332999999999997076116642347187735140323638916015625, 0.786667000000000005144329406903125345706939697265625, 0.5133330000000000392645915781031362712383270263671875 ] }, "Linux 4.15: BFQ": { "value": 5.410000000000000142108547152020037174224853515625, "raw_values": [ 5.35667000000000026460611479706130921840667724609375, 5.416669999999999873807610129006206989288330078125, 5.45666999999999990933474691701121628284454345703125 ] } } }, "116211eef87281bcb80218c15780c23dcc70111b": { "identifier": "pts\/startup-time-1.0.0", "title": "Application Start-up Time", "app_version": "0.1.0", "arguments": "seq r gnome-terminal", "description": "Background I\/O Type: Sequential - Background I\/O mix: Only reads - Application to start: Gnome terminal", "scale": "sec", "proportion": "LIB", "display_format": "BAR_GRAPH", "results": { "Linux 4.15: CFQ": { "value": 3.29000000000000003552713678800500929355621337890625, "raw_values": [ 3.350000000000000088817841970012523233890533447265625, 3.29000000000000003552713678800500929355621337890625, 3.216670000000000140261136039043776690959930419921875 ] }, "Linux 4.15: Deadline": { "value": 3.20000000000000017763568394002504646778106689453125, "raw_values": [ 3.20000000000000017763568394002504646778106689453125, 3.229999999999999982236431605997495353221893310546875, 3.17332999999999998408384271897375583648681640625 ] }, "Linux 4.15: None": { "value": 3.560000000000000053290705182007513940334320068359375, "raw_values": [ 3.5866699999999998027533365529961884021759033203125, 3.5033300000000000551381162949837744235992431640625, 3.57667000000000001591615728102624416351318359375 ] }, "Linux 4.15: Kyber": { "value": 3.589999999999999857891452847979962825775146484375, "raw_values": [ 3.779999999999999804600747665972448885440826416015625, 3.61667000000000005144329406903125345706939697265625, 3.45999999999999996447286321199499070644378662109375, 3.573329999999999895266000748961232602596282958984375, 3.5033300000000000551381162949837744235992431640625 ] }, "Linux 4.15: BFQ low_latency": { "value": 0.95999999999999996447286321199499070644378662109375, "raw_values": [ 1.3000000000000000444089209850062616169452667236328125, 1.3400000000000000799360577730112709105014801025390625, 1.8766700000000000603250782660325057804584503173828125, 0.216666999999999998482991259152186103165149688720703125, 0.770000000000000017763568394002504646778106689453125, 0.2300000000000000099920072216264088638126850128173828125 ] }, "Linux 4.15: BFQ": { "value": 3.529999999999999804600747665972448885440826416015625, "raw_values": [ 3.426670000000000104733999251038767397403717041015625, 3.600000000000000088817841970012523233890533447265625, 3.569999999999999840127884453977458178997039794921875 ] } } }, "4a7f47587177c99219ef23c25252ff0d735cc491": { "title": "Flexible IO Tester", "app_version": "2.1.13", "arguments": "read libaio 0 1 4k", "description": "Type: Sequential Read - IO Engine: Libaio - Buffered: No - 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"raw_values": [ 115095, 115519, 115688 ], "details": { "compiler-options": { "compiler-type": "CC", "compiler": "gcc", "compiler-options": "-rdynamic -std=gnu99 -O3 -ffast-math -include -lrt -laio -lz -lm -lpthread -ldl" } } }, "Linux 4.15: BFQ low_latency": { "value": 115315, "raw_values": [ 115381, 115145, 115419 ], "details": { "compiler-options": { "compiler-type": "CC", "compiler": "gcc", "compiler-options": "-rdynamic -std=gnu99 -O3 -ffast-math -include -lrt -laio -lz -lm -lpthread -ldl" } } }, "Linux 4.15: BFQ": { "value": 115292, "raw_values": [ 114854, 115496, 115526 ], "details": { "compiler-options": { "compiler-type": "CC", "compiler": "gcc", "compiler-options": "-rdynamic -std=gnu99 -O3 -ffast-math -include -lrt -laio -lz -lm -lpthread -ldl" } } } } }, "7dc0fadd35729a946e1e7b7aef83364eb2aa5ec2": { "identifier": "pts\/fio-1.9.0", "title": "Flexible IO Tester", "app_version": "2.1.13", "arguments": "read libaio 0 1 4k", "description": "Type: Sequential Read - IO Engine: Libaio - Buffered: No - Direct: Yes - Block Size: 4KB - Disk Target: Default Test Directory", "scale": "MB\/s", "proportion": "HIB", "display_format": "BAR_GRAPH", "results": { "Linux 4.15: CFQ": { "value": 459.82999999999998408384271897375583648681640625, "raw_values": [ 460.16699999999997316990629769861698150634765625, 459.759000000000014551915228366851806640625, 459.55000000000001136868377216160297393798828125 ], "details": { "compiler-options": { "compiler-type": "CC", "compiler": "gcc", "compiler-options": "-rdynamic -std=gnu99 -O3 -ffast-math -include -lrt -laio -lz -lm -lpthread -ldl" } } }, "Linux 4.15: Deadline": { "value": 461.220000000000027284841053187847137451171875, "raw_values": [ 460.62200000000001409716787748038768768310546875, 460.72399999999998954081092961132526397705078125, 462.3220000000000027284841053187847137451171875 ], "details": { "compiler-options": { "compiler-type": "CC", "compiler": "gcc", "compiler-options": "-rdynamic -std=gnu99 -O3 -ffast-math -include 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