Linux 4.15 I/O Scheduler vs. 4.13 Rough Comparison

Tests by Michael Larabel for a future article on Phoronix.

HTML result view exported from: https://openbenchmarking.org/result/1712075-AL-IOING619956.

ProcessorMotherboardChipsetMemoryDiskGraphicsAudioNetworkOSKernelDesktopDisplay ServerDisplay DriverOpenGLCompilerFile-SystemScreen ResolutionLinux 4.13Linux 4.15 BFQ BFQ low_latency CFQ Deadline Kyber None BFQ BFQ low_latency CFQ Deadline Kyber NoneIntel Core i7-5600U @ 3.20GHz (4 Cores)LENOVO 20BSCTO1WWIntel Broadwell-U-OPI2 x 4096 MB DDR3-1600MHz128GB SAMSUNG MZNTE128Intel HD 5500 3072MB (950MHz)Intel Broadwell-U AudioIntel Connection + Intel Wireless 7265Ubuntu 17.044.13.0-999-generic (x86_64) 20170814Unity 7.5.0X Server 1.19.3modesetting 1.19.34.5 Mesa 17.0.7GCC 6.3.0 20170406ext41920x1080Intel Core i7-5600U @ 3.20GHz (2 Cores / 4 Threads)2 x 4096 MB DDR3-1600MT/sIntel HD 5500 (950MHz)Ubuntu 17.104.15.0-999-generic (x86_64) 20171203GNOME Shell 3.26.1X Server 1.19.5GCC 7.2.0OpenBenchmarking.orgCompiler Details- Linux 4.13: BFQ: --build=x86_64-linux-gnu --disable-browser-plugin --disable-vtable-verify --disable-werror --enable-checking=release --enable-clocale=gnu --enable-default-pie --enable-gnu-unique-object --enable-gtk-cairo --enable-java-awt=gtk --enable-java-home --enable-languages=c,ada,c++,java,go,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-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-arch-directory=amd64 --with-default-libstdcxx-abi=new --with-multilib-list=m32,m64,mx32 --with-target-system-zlib --with-tune=generic -v - Linux 4.13: BFQ low_latency: --build=x86_64-linux-gnu --disable-browser-plugin --disable-vtable-verify --disable-werror --enable-checking=release --enable-clocale=gnu --enable-default-pie --enable-gnu-unique-object --enable-gtk-cairo --enable-java-awt=gtk --enable-java-home --enable-languages=c,ada,c++,java,go,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-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-arch-directory=amd64 --with-default-libstdcxx-abi=new --with-multilib-list=m32,m64,mx32 --with-target-system-zlib --with-tune=generic -v - Linux 4.13: CFQ: --build=x86_64-linux-gnu --disable-browser-plugin --disable-vtable-verify --disable-werror --enable-checking=release --enable-clocale=gnu --enable-default-pie --enable-gnu-unique-object --enable-gtk-cairo --enable-java-awt=gtk --enable-java-home --enable-languages=c,ada,c++,java,go,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-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-arch-directory=amd64 --with-default-libstdcxx-abi=new --with-multilib-list=m32,m64,mx32 --with-target-system-zlib --with-tune=generic -v - Linux 4.13: Deadline: --build=x86_64-linux-gnu --disable-browser-plugin --disable-vtable-verify --disable-werror --enable-checking=release --enable-clocale=gnu --enable-default-pie --enable-gnu-unique-object --enable-gtk-cairo --enable-java-awt=gtk --enable-java-home --enable-languages=c,ada,c++,java,go,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-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-arch-directory=amd64 --with-default-libstdcxx-abi=new --with-multilib-list=m32,m64,mx32 --with-target-system-zlib --with-tune=generic -v - Linux 4.13: Kyber: --build=x86_64-linux-gnu --disable-browser-plugin --disable-vtable-verify --disable-werror --enable-checking=release --enable-clocale=gnu --enable-default-pie --enable-gnu-unique-object --enable-gtk-cairo --enable-java-awt=gtk --enable-java-home --enable-languages=c,ada,c++,java,go,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-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-arch-directory=amd64 --with-default-libstdcxx-abi=new --with-multilib-list=m32,m64,mx32 --with-target-system-zlib --with-tune=generic -v - Linux 4.13: None: --build=x86_64-linux-gnu --disable-browser-plugin --disable-vtable-verify --disable-werror --enable-checking=release --enable-clocale=gnu --enable-default-pie --enable-gnu-unique-object --enable-gtk-cairo --enable-java-awt=gtk --enable-java-home --enable-languages=c,ada,c++,java,go,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-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-arch-directory=amd64 --with-default-libstdcxx-abi=new --with-multilib-list=m32,m64,mx32 --with-target-system-zlib --with-tune=generic -v - Linux 4.15: BFQ: --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 - Linux 4.15: BFQ low_latency: --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 - Linux 4.15: CFQ: --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 - Linux 4.15: Deadline: --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 - Linux 4.15: Kyber: --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 - Linux 4.15: None: --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 Details- Linux 4.13: BFQ: BFQ / data=ordered,errors=remount-ro,relatime,rw- Linux 4.13: BFQ low_latency: BFQ / data=ordered,errors=remount-ro,relatime,rw- Linux 4.13: CFQ: CFQ / data=ordered,errors=remount-ro,relatime,rw- Linux 4.13: Deadline: DEADLINE / data=ordered,errors=remount-ro,relatime,rw- Linux 4.13: Kyber: KYBER / data=ordered,errors=remount-ro,relatime,rw- Linux 4.13: None: NONE / data=ordered,errors=remount-ro,relatime,rw- Linux 4.15: BFQ: BFQ / data=ordered,errors=remount-ro,relatime,rw- Linux 4.15: BFQ low_latency: BFQ / data=ordered,errors=remount-ro,relatime,rw- Linux 4.15: CFQ: CFQ / data=ordered,errors=remount-ro,relatime,rw- Linux 4.15: Deadline: DEADLINE / data=ordered,errors=remount-ro,relatime,rw- Linux 4.15: Kyber: KYBER / data=ordered,errors=remount-ro,relatime,rw- Linux 4.15: None: NONE / data=ordered,errors=remount-ro,relatime,rwProcessor Details- Scaling Governor: intel_pstate powersave

startup-time: Seq - Reads and writes - xtermstartup-time: Rand - Only reads - LibreOffice Writerstartup-time: Seq - Only reads - Gnome terminalstartup-time: Rand - Reads and writes - Gnome terminalstartup-time: Seq - Only reads - LibreOffice Writerstartup-time: Rand - Reads and writes - LibreOffice Writerstartup-time: Seq - Reads and writes - Gnome terminalstartup-time: Seq - Reads and writes - LibreOffice Writersqlite: Default Test Directoryfio: Rand Write - Libaio - No - Yes - 4KB - Default Test Directoryfio: Seq Read - Libaio - No - Yes - 4KB - Default Test Directoryfio: Seq Write - Libaio - No - Yes - 4KB - Default Test Directoryfs-mark: 1000 Files, 1MB Sizefs-mark: 5000 Files, 1MB Size, 4 Threadsblogbench: Readblogbench: Writeiozone: 4Kb - 8GB - Write PerformanceLinux 4.13Linux 4.15 BFQ BFQ low_latency CFQ Deadline Kyber None BFQ BFQ low_latency CFQ Deadline Kyber None4.700.313.80147.2626.92218.5927.7217.8026.87612103316289.600.250.350.260.443.302.280.853.88137.0589.92230.13104.9323.6347.205326322882106.0741.220.312.740.164.810.29112.3447.83459.44103.2325.6542.137980532918104.220.343.440.845.381.48113.6470.84458.93103.6022.3735.67648161311992.863.320.312.010.771.165.2496.56107.41347.11117.3034.0761.275814103027110.471.380.312.830.544.850.864.948.4189.85125.80206.83135.1241.5073.875029033570125.5648.360.353.531.315.411.97130.7133.07461.1876.9718.2523.651182301204226.7519.220.340.960.530.700.71141.2767.92461.2787.9019.4334.251120920236846.1734.730.533.290.366.390.6392.04104.79459.83113.4335.7555.58650369315582.500.433.201.055.021.56112.9459.60461.2286.5624.2739.80950049271643.082.970.363.591.026.241.6236.90115.3163.47461.7588.7021.8542.60776595294455.694.920.373.561.135.241.6735.70118.9163.69212.3478.4420.1743.75632664328361.86OpenBenchmarking.org

Application Start-up Time

Background I/O Type: Sequential - Background I/O mix: Reads and writes - Application to start: xterm

Linux 4.13Linux 4.15OpenBenchmarking.orgsec, Fewer Is BetterApplication Start-up Time 0.1.0Background I/O Type: Sequential - Background I/O mix: Reads and writes - Application to start: xtermBFQBFQ low_latencyCFQKyberNone1122334455SE +/- 1.21, N = 5SE +/- 0.04, N = 6SE +/- 2.30, N = 6SE +/- 1.96, N = 6SE +/- 0.00, N = 3SE +/- 3.45, N = 5SE +/- 1.68, N = 6SE +/- 0.60, N = 3SE +/- 0.47, N = 6SE +/- 0.53, N = 64.700.2541.223.321.3848.3619.2234.732.974.92

Application Start-up Time

Background I/O Type: Random - Background I/O mix: Only reads - Application to start: LibreOffice Writer

Linux 4.13Linux 4.15OpenBenchmarking.orgsec, Fewer Is BetterApplication Start-up Time 0.1.0Background I/O Type: Random - Background I/O mix: Only reads - Application to start: LibreOffice WriterBFQBFQ low_latencyCFQDeadlineKyberNone0.11930.23860.35790.47720.5965SE +/- 0.00, N = 3SE +/- 0.00, N = 3SE +/- 0.00, N = 3SE +/- 0.00, N = 6SE +/- 0.00, N = 6SE +/- 0.00, N = 6SE +/- 0.01, N = 6SE +/- 0.00, N = 3SE +/- 0.01, N = 3SE +/- 0.00, N = 3SE +/- 0.00, N = 3SE +/- 0.00, N = 30.310.350.310.340.310.310.350.340.530.430.360.37

Application Start-up Time

Background I/O Type: Sequential - Background I/O mix: Only reads - Application to start: Gnome terminal

Linux 4.13Linux 4.15OpenBenchmarking.orgsec, Fewer Is BetterApplication Start-up Time 0.1.0Background I/O Type: Sequential - Background I/O mix: Only reads - Application to start: Gnome terminalBFQBFQ low_latencyCFQDeadlineKyberNone0.8551.712.5653.424.275SE +/- 1.63, N = 5SE +/- 0.02, N = 6SE +/- 0.02, N = 3SE +/- 0.00, N = 3SE +/- 0.01, N = 3SE +/- 0.05, N = 3SE +/- 0.27, N = 6SE +/- 0.04, N = 3SE +/- 0.02, N = 3SE +/- 0.06, N = 5SE +/- 0.03, N = 33.800.262.743.442.012.833.530.963.293.203.593.56

Application Start-up Time

Background I/O Type: Random - Background I/O mix: Reads and writes - Application to start: Gnome terminal

Linux 4.13Linux 4.15OpenBenchmarking.orgsec, Fewer Is BetterApplication Start-up Time 0.1.0Background I/O Type: Random - Background I/O mix: Reads and writes - Application to start: Gnome terminalBFQ low_latencyCFQDeadlineKyberNoneBFQ0.29480.58960.88441.17921.474SE +/- 0.10, N = 6SE +/- 0.00, N = 6SE +/- 0.05, N = 6SE +/- 0.03, N = 6SE +/- 0.01, N = 3SE +/- 0.12, N = 6SE +/- 0.12, N = 6SE +/- 0.03, N = 6SE +/- 0.06, N = 6SE +/- 0.06, N = 6SE +/- 0.02, N = 30.440.160.840.770.541.310.530.361.051.021.13

Application Start-up Time

Background I/O Type: Sequential - Background I/O mix: Only reads - Application to start: LibreOffice Writer

Linux 4.13Linux 4.15OpenBenchmarking.orgsec, Fewer Is BetterApplication Start-up Time 0.1.0Background I/O Type: Sequential - Background I/O mix: Only reads - Application to start: LibreOffice WriterBFQ low_latencyCFQDeadlineNoneBFQKyber246810SE +/- 0.24, N = 6SE +/- 0.04, N = 3SE +/- 0.01, N = 3SE +/- 0.03, N = 3SE +/- 0.03, N = 3SE +/- 0.17, N = 6SE +/- 0.00, N = 3SE +/- 0.01, N = 3SE +/- 0.28, N = 6SE +/- 0.02, N = 33.304.815.384.855.410.706.395.026.245.24

Application Start-up Time

Background I/O Type: Random - Background I/O mix: Reads and writes - Application to start: LibreOffice Writer

Linux 4.13Linux 4.15OpenBenchmarking.orgsec, Fewer Is BetterApplication Start-up Time 0.1.0Background I/O Type: Random - Background I/O mix: Reads and writes - Application to start: LibreOffice WriterBFQ low_latencyCFQDeadlineKyberNoneBFQ0.5131.0261.5392.0522.565SE +/- 0.68, N = 6SE +/- 0.00, N = 3SE +/- 0.11, N = 6SE +/- 0.04, N = 6SE +/- 0.00, N = 3SE +/- 0.21, N = 6SE +/- 0.08, N = 6SE +/- 0.00, N = 3SE +/- 0.06, N = 6SE +/- 0.08, N = 6SE +/- 0.12, N = 62.280.291.481.160.861.970.710.631.561.621.67

Application Start-up Time

Background I/O Type: Sequential - Background I/O mix: Reads and writes - Application to start: Gnome terminal

Linux 4.13Linux 4.15OpenBenchmarking.orgsec, Fewer Is BetterApplication Start-up Time 0.1.0Background I/O Type: Sequential - Background I/O mix: Reads and writes - Application to start: Gnome terminalBFQ low_latencyKyberNone816243240SE +/- 0.08, N = 6SE +/- 0.03, N = 3SE +/- 2.47, N = 6SE +/- 0.57, N = 40.855.244.9436.9035.70

Application Start-up Time

Background I/O Type: Sequential - Background I/O mix: Reads and writes - Application to start: LibreOffice Writer

OpenBenchmarking.orgsec, Fewer Is BetterApplication Start-up Time 0.1.0Background I/O Type: Sequential - Background I/O mix: Reads and writes - Application to start: LibreOffice WriterBFQ low_latencyNone246810SE +/- 0.53, N = 6SE +/- 0.09, N = 33.888.41

SQLite

Test Target: Default Test Directory

Linux 4.13Linux 4.15OpenBenchmarking.orgSeconds, Fewer Is BetterSQLite 3.8.10.2Test Target: Default Test DirectoryBFQBFQ low_latencyCFQDeadlineKyberNone306090120150SE +/- 4.84, N = 6SE +/- 3.38, N = 6SE +/- 4.87, N = 6SE +/- 3.91, N = 6SE +/- 0.60, N = 3SE +/- 0.13, N = 3SE +/- 2.92, N = 6SE +/- 5.22, N = 6SE +/- 0.12, N = 3SE +/- 3.03, N = 6SE +/- 2.23, N = 6SE +/- 3.32, N = 6147.26137.05112.34113.6496.5689.85130.71141.2792.04112.94115.31118.911. (CC) gcc options: -O2 -lreadline -lcurses -ldl -lpthread

Flexible IO Tester

Type: Random Write - IO Engine: Libaio - Buffered: No - Direct: Yes - Block Size: 4KB - Disk Target: Default Test Directory

Linux 4.13Linux 4.15OpenBenchmarking.orgMB/s, More Is BetterFlexible IO Tester 2.1.13Type: Random Write - IO Engine: Libaio - Buffered: No - Direct: Yes - Block Size: 4KB - Disk Target: Default Test DirectoryBFQBFQ low_latencyCFQDeadlineKyberNone306090120150SE +/- 1.99, N = 6SE +/- 16.21, N = 6SE +/- 10.58, N = 6SE +/- 14.88, N = 6SE +/- 14.42, N = 6SE +/- 0.01, N = 3SE +/- 3.83, N = 6SE +/- 14.97, N = 6SE +/- 4.14, N = 6SE +/- 12.64, N = 6SE +/- 12.94, N = 6SE +/- 14.23, N = 626.9289.9247.8370.84107.41125.8033.0767.92104.7959.6063.4763.691. (CC) gcc options: -rdynamic -std=gnu99 -O3 -ffast-math -include -lrt -laio -lz -lm -lpthread -ldl

Flexible IO Tester

Type: Random Write - IO Engine: Libaio - Buffered: No - Direct: Yes - Block Size: 4KB - Disk Target: Default Test Directory

Linux 4.13Linux 4.15OpenBenchmarking.orgIOPS, More Is BetterFlexible IO Tester 2.1.13Type: Random Write - IO Engine: Libaio - Buffered: No - Direct: Yes - Block Size: 4KB - Disk Target: Default Test DirectoryBFQBFQ low_latencyCFQDeadlineKyberNone7K14K21K28K35KSE +/- 497.58, N = 6SE +/- 4052.87, N = 6SE +/- 2644.91, N = 6SE +/- 3720.68, N = 6SE +/- 3604.38, N = 6SE +/- 3.51, N = 3SE +/- 956.63, N = 6SE +/- 3741.34, N = 6SE +/- 1035.79, N = 6SE +/- 3161.08, N = 6SE +/- 3235.11, N = 6SE +/- 3558.59, N = 667272247711953177062684931446826316976261941489615864159201. (CC) gcc options: -rdynamic -std=gnu99 -O3 -ffast-math -include -lrt -laio -lz -lm -lpthread -ldl

Flexible IO Tester

Type: Sequential Read - IO Engine: Libaio - Buffered: No - Direct: Yes - Block Size: 4KB - Disk Target: Default Test Directory

Linux 4.13Linux 4.15OpenBenchmarking.orgMB/s, More Is BetterFlexible IO Tester 2.1.13Type: Sequential Read - IO Engine: Libaio - Buffered: No - Direct: Yes - Block Size: 4KB - Disk Target: Default Test DirectoryBFQBFQ low_latencyCFQDeadlineKyberNone100200300400500SE +/- 3.19, N = 4SE +/- 4.46, N = 3SE +/- 0.44, N = 3SE +/- 0.13, N = 3SE +/- 3.67, N = 3SE +/- 0.46, N = 3SE +/- 0.88, N = 3SE +/- 0.34, N = 3SE +/- 0.18, N = 3SE +/- 0.55, N = 3SE +/- 0.71, N = 3SE +/- 2.98, N = 3218.59230.13459.44458.93347.11206.83461.18461.27459.83461.22461.75212.341. (CC) gcc options: -rdynamic -std=gnu99 -O3 -ffast-math -include -lrt -laio -lz -lm -lpthread -ldl

Flexible IO Tester

Type: Sequential Read - IO Engine: Libaio - Buffered: No - Direct: Yes - Block Size: 4KB - Disk Target: Default Test Directory

Linux 4.13Linux 4.15OpenBenchmarking.orgIOPS, More Is BetterFlexible IO Tester 2.1.13Type: Sequential Read - IO Engine: Libaio - Buffered: No - Direct: Yes - Block Size: 4KB - Disk Target: Default Test DirectoryBFQBFQ low_latencyCFQDeadlineKyberNone20K40K60K80K100KSE +/- 797.79, N = 4SE +/- 1114.46, N = 3SE +/- 109.53, N = 3SE +/- 33.60, N = 3SE +/- 917.10, N = 3SE +/- 113.77, N = 3SE +/- 219.17, N = 3SE +/- 85.70, N = 3SE +/- 45.23, N = 3SE +/- 137.69, N = 3SE +/- 176.38, N = 3SE +/- 744.77, N = 354644575291148571147298677351703115292115315114953115302115434530821. (CC) gcc options: -rdynamic -std=gnu99 -O3 -ffast-math -include -lrt -laio -lz -lm -lpthread -ldl

Flexible IO Tester

Type: Sequential Write - IO Engine: Libaio - Buffered: No - Direct: Yes - Block Size: 4KB - Disk Target: Default Test Directory

Linux 4.13Linux 4.15OpenBenchmarking.orgMB/s, More Is BetterFlexible IO Tester 2.1.13Type: Sequential Write - IO Engine: Libaio - Buffered: No - Direct: Yes - Block Size: 4KB - Disk Target: Default Test DirectoryBFQBFQ low_latencyCFQDeadlineKyberNone306090120150SE +/- 1.89, N = 6SE +/- 14.79, N = 6SE +/- 14.50, N = 6SE +/- 15.12, N = 6SE +/- 12.15, N = 6SE +/- 0.08, N = 3SE +/- 15.44, N = 6SE +/- 16.00, N = 6SE +/- 4.68, N = 6SE +/- 14.14, N = 6SE +/- 14.79, N = 6SE +/- 14.40, N = 627.72104.93103.23103.60117.30135.1276.9787.90113.4386.5688.7078.441. (CC) gcc options: -rdynamic -std=gnu99 -O3 -ffast-math -include -lrt -laio -lz -lm -lpthread -ldl

Flexible IO Tester

Type: Sequential Write - IO Engine: Libaio - Buffered: No - Direct: Yes - Block Size: 4KB - Disk Target: Default Test Directory

Linux 4.13Linux 4.15OpenBenchmarking.orgIOPS, More Is BetterFlexible IO Tester 2.1.13Type: Sequential Write - IO Engine: Libaio - Buffered: No - Direct: Yes - Block Size: 4KB - Disk Target: Default Test DirectoryBFQBFQ low_latencyCFQDeadlineKyberNone7K14K21K28K35KSE +/- 472.97, N = 6SE +/- 3698.82, N = 6SE +/- 3624.05, N = 6SE +/- 3780.94, N = 6SE +/- 3036.98, N = 6SE +/- 19.22, N = 3SE +/- 3861.01, N = 6SE +/- 3999.76, N = 6SE +/- 1168.74, N = 6SE +/- 3536.14, N = 6SE +/- 3697.25, N = 6SE +/- 3600.80, N = 6692626228258032589729322337771924021970283532163722172196071. (CC) gcc options: -rdynamic -std=gnu99 -O3 -ffast-math -include -lrt -laio -lz -lm -lpthread -ldl

FS-Mark

Test: 1000 Files, 1MB Size

Linux 4.13Linux 4.15OpenBenchmarking.orgFiles/s, More Is BetterFS-Mark 3.3Test: 1000 Files, 1MB SizeBFQBFQ low_latencyCFQDeadlineKyberNone918273645SE +/- 0.29, N = 3SE +/- 2.16, N = 6SE +/- 0.75, N = 6SE +/- 0.38, N = 6SE +/- 1.63, N = 6SE +/- 0.15, N = 3SE +/- 0.79, N = 6SE +/- 1.11, N = 6SE +/- 1.58, N = 6SE +/- 0.62, N = 6SE +/- 1.03, N = 6SE +/- 1.17, N = 617.8023.6325.6522.3734.0741.5018.2519.4335.7524.2721.8520.171. (CC) gcc options: -static

FS-Mark

Test: 5000 Files, 1MB Size, 4 Threads

Linux 4.13Linux 4.15OpenBenchmarking.orgFiles/s, More Is BetterFS-Mark 3.3Test: 5000 Files, 1MB Size, 4 ThreadsBFQBFQ low_latencyCFQDeadlineKyberNone1632486480SE +/- 5.39, N = 6SE +/- 7.20, N = 6SE +/- 5.65, N = 6SE +/- 5.13, N = 6SE +/- 4.24, N = 6SE +/- 1.09, N = 3SE +/- 2.06, N = 6SE +/- 5.90, N = 6SE +/- 2.74, N = 6SE +/- 4.51, N = 6SE +/- 8.58, N = 6SE +/- 7.96, N = 626.8747.2042.1335.6761.2773.8723.6534.2555.5839.8042.6043.751. (CC) gcc options: -static

BlogBench

Test: Read

Linux 4.13Linux 4.15OpenBenchmarking.orgFinal Score, More Is BetterBlogBench 1.0Test: ReadBFQBFQ low_latencyCFQDeadlineKyberNone300K600K900K1200K1500KSE +/- 16219.64, N = 6SE +/- 16411.27, N = 6SE +/- 33226.93, N = 6SE +/- 21980.44, N = 6SE +/- 8262.34, N = 3SE +/- 2993.42, N = 3SE +/- 14794.03, N = 3SE +/- 64889.88, N = 6SE +/- 24461.81, N = 6SE +/- 98431.75, N = 6SE +/- 47438.71, N = 6SE +/- 7796.67, N = 3612103532632798053648161581410502903118230111209206503699500497765956326641. (CC) gcc options: -O2 -pthread

BlogBench

Test: Write

Linux 4.13Linux 4.15OpenBenchmarking.orgFinal Score, More Is BetterBlogBench 1.0Test: WriteBFQBFQ low_latencyCFQDeadlineKyberNone8001600240032004000SE +/- 53.19, N = 3SE +/- 125.32, N = 3SE +/- 73.37, N = 3SE +/- 123.20, N = 3SE +/- 36.13, N = 3SE +/- 26.67, N = 3SE +/- 70.95, N = 3SE +/- 92.59, N = 3SE +/- 163.84, N = 3SE +/- 153.54, N = 3SE +/- 21.48, N = 3SE +/- 29.58, N = 33162288229183119302735702042236831552716294432831. (CC) gcc options: -O2 -pthread

IOzone

Record Size: 4Kb - File Size: 8GB - Disk Test: Write Performance

Linux 4.13Linux 4.15OpenBenchmarking.orgMB/s, More Is BetterIOzone 3.465Record Size: 4Kb - File Size: 8GB - Disk Test: Write PerformanceBFQBFQ low_latencyCFQDeadlineKyberNone306090120150SE +/- 1.78, N = 6SE +/- 1.28, N = 3SE +/- 5.23, N = 6SE +/- 6.52, N = 6SE +/- 3.80, N = 6SE +/- 2.93, N = 6SE +/- 0.06, N = 3SE +/- 6.98, N = 6SE +/- 4.61, N = 6SE +/- 5.84, N = 6SE +/- 9.32, N = 6SE +/- 9.31, N = 689.60106.07104.2292.86110.47125.5626.7546.1782.5043.0855.6961.861. (CC) gcc options: -O3

Phoronix Test Suite v10.8.4