KPTI Kernel Comparison

Tests for a future article on Phoronix.

HTML result view exported from: https://openbenchmarking.org/result/1801049-AL-KPTIKERNE72&sro.

ProcessorMotherboardChipsetMemoryDiskGraphicsAudioMonitorNetworkOSKernelDesktopDisplay ServerOpenGLCompilerFile-SystemScreen ResolutionLinux 4.4.110-rc1Linux 4.9.75-rc1Linux 4.14.12-rc1 KPTI Off KPTI On KPTI Off KPTI On KPTI Off KPTI OnIntel Core i7-4790K @ 4.40GHz (4 Cores / 8 Threads)Gigabyte Z97-HD3PIntel 4th Gen Core DRAM16384MB120GB OCZ TRION100Intel Haswell Desktop 1536MB (1250MHz)Intel Xeon E3-1200 v3/4thAcer B286HKRealtek RTL8111/8168/8411Ubuntu 17.104.4.110-rc1-phx-kpti (x86_64) 20180104GNOME Shell 3.26.1Wayland3.3 Mesa 17.2.2GCC 7.2.0ext41920x10804.9.75-rc1-phx-kpti (x86_64) 201801044.5 Mesa 17.2.24.14.12-rc1-phx-kpti (x86_64) 20180104OpenBenchmarking.orgEnvironment Details- GJS_DEBUG_TOPICS=JS ERROR;JS LOG GJS_DEBUG_OUTPUT=stderrCompiler Details- --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- CFQ / data=ordered,errors=remount-ro,relatime,rwProcessor Details- Scaling Governor: intel_pstate powersave

sqlite: Default Test Directoryx264: H.264 Video Encodingebizzy: build-apache: Time To Compilebuild-linux-kernel: Time To Compilepgbench: Buffer Test - Normal Load - Read Writepgbench: Buffer Test - Single Thread - Read Writepgbench: Buffer Test - Heavy Contention - Read Writedarktable: Boat - CPU-onlydarktable: Masskrug - CPU-onlydarktable: Server Room - CPU-onlygimp: auto-levelsgimp: unsharp-maskredis: GETredis: SETblender: Barbershop - CPU-Onlyapache: Static Web Page ServingLinux 4.4.110-rc1Linux 4.9.75-rc1Linux 4.14.12-rc1 KPTI Off KPTI On KPTI Off KPTI On KPTI Off KPTI On34.15195.9018163023.60126.422055.01625.872222.3223.7910.889.474.879.862341001.751747502.252135.7849434.2034.49198.3418440423.73127.011948.38629.632286.4223.8510.939.464.9710.202300517.751755528.812134.2347057.0933.79198.4318568423.39123.702187.77609.482491.9023.7610.789.425.049.912553176.541962011.962137.6944140.2835.31200.2717757723.85126.372073.25587.252573.0023.7910.879.465.1310.312559257.831894524.902134.4541715.2933.66204.6118456124.22124.982394.13661.632516.2923.9910.859.464.919.893026910.922347933.212133.6143564.1634.25204.7818662624.32127.292258.62663.512621.1323.9310.899.485.0710.503052685.752333107.582137.3641260.62OpenBenchmarking.org

SQLite

Test Target: Default Test Directory

Linux 4.14.12-rc1Linux 4.4.110-rc1Linux 4.9.75-rc1OpenBenchmarking.orgSeconds, Fewer Is BetterSQLite 3.8.10.2Test Target: Default Test DirectoryKPTI OffKPTI On816243240SE +/- 0.48, N = 3SE +/- 0.50, N = 3SE +/- 0.77, N = 6SE +/- 1.19, N = 6SE +/- 0.85, N = 6SE +/- 0.69, N = 333.6634.2534.1534.4933.7935.311. (CC) gcc options: -O2 -ldl -lpthread

x264

H.264 Video Encoding

Linux 4.14.12-rc1Linux 4.4.110-rc1Linux 4.9.75-rc1OpenBenchmarking.orgFrames Per Second, More Is Betterx264 2017-09-08H.264 Video EncodingKPTI OffKPTI On4080120160200SE +/- 0.72, N = 3SE +/- 0.92, N = 3SE +/- 3.74, N = 3SE +/- 3.69, N = 3SE +/- 3.31, N = 4SE +/- 2.99, N = 4204.61204.78195.90198.34198.43200.271. (CC) gcc options: -ldl -m64 -lm -lpthread -O3 -ffast-math -std=gnu99 -fPIC -fomit-frame-pointer -fno-tree-vectorize

ebizzy

Linux 4.14.12-rc1Linux 4.4.110-rc1Linux 4.9.75-rc1OpenBenchmarking.orgRecords/s, More Is Betterebizzy 0.3KPTI OffKPTI On40K80K120K160K200KSE +/- 2988.77, N = 3SE +/- 2694.50, N = 6SE +/- 2872.70, N = 6SE +/- 3291.55, N = 3SE +/- 5060.84, N = 6SE +/- 3913.70, N = 61845611866261816301844041856841775771. (CC) gcc options: -pthread -lpthread -O3 -march=native

Timed Apache Compilation

Time To Compile

Linux 4.14.12-rc1Linux 4.4.110-rc1Linux 4.9.75-rc1OpenBenchmarking.orgSeconds, Fewer Is BetterTimed Apache Compilation 2.4.7Time To CompileKPTI OffKPTI On612182430SE +/- 0.34, N = 3SE +/- 0.04, N = 3SE +/- 0.00, N = 3SE +/- 0.08, N = 3SE +/- 0.07, N = 3SE +/- 0.07, N = 324.2224.3223.6023.7323.3923.85

Timed Linux Kernel Compilation

Time To Compile

Linux 4.14.12-rc1Linux 4.4.110-rc1Linux 4.9.75-rc1OpenBenchmarking.orgSeconds, Fewer Is BetterTimed Linux Kernel Compilation 4.13Time To CompileKPTI OffKPTI On306090120150SE +/- 0.71, N = 3SE +/- 1.17, N = 3SE +/- 0.98, N = 3SE +/- 0.79, N = 3SE +/- 0.89, N = 3SE +/- 1.32, N = 3124.98127.29126.42127.01123.70126.37

PostgreSQL pgbench

Scaling: Buffer Test - Test: Normal Load - Mode: Read Write

Linux 4.14.12-rc1Linux 4.4.110-rc1Linux 4.9.75-rc1OpenBenchmarking.orgTPS, More Is BetterPostgreSQL pgbench 10.0Scaling: Buffer Test - Test: Normal Load - Mode: Read WriteKPTI OffKPTI On5001000150020002500SE +/- 111.96, N = 6SE +/- 155.10, N = 6SE +/- 120.67, N = 6SE +/- 130.97, N = 6SE +/- 193.72, N = 6SE +/- 120.35, N = 62394.132258.622055.011948.382187.772073.251. (CC) gcc options: -fno-strict-aliasing -fwrapv -O2 -fPIC -lpgcommon -lpgport -lpthread -lrt -lcrypt -ldl -lm

PostgreSQL pgbench

Scaling: Buffer Test - Test: Single Thread - Mode: Read Write

Linux 4.14.12-rc1Linux 4.4.110-rc1Linux 4.9.75-rc1OpenBenchmarking.orgTPS, More Is BetterPostgreSQL pgbench 10.0Scaling: Buffer Test - Test: Single Thread - Mode: Read WriteKPTI OffKPTI On140280420560700SE +/- 23.02, N = 6SE +/- 20.47, N = 6SE +/- 23.87, N = 6SE +/- 25.53, N = 6SE +/- 14.48, N = 6SE +/- 27.11, N = 6661.63663.51625.87629.63609.48587.251. (CC) gcc options: -fno-strict-aliasing -fwrapv -O2 -fPIC -lpgcommon -lpgport -lpthread -lrt -lcrypt -ldl -lm

PostgreSQL pgbench

Scaling: Buffer Test - Test: Heavy Contention - Mode: Read Write

Linux 4.14.12-rc1Linux 4.4.110-rc1Linux 4.9.75-rc1OpenBenchmarking.orgTPS, More Is BetterPostgreSQL pgbench 10.0Scaling: Buffer Test - Test: Heavy Contention - Mode: Read WriteKPTI OffKPTI On6001200180024003000SE +/- 95.38, N = 6SE +/- 167.10, N = 6SE +/- 144.19, N = 6SE +/- 115.54, N = 6SE +/- 69.12, N = 6SE +/- 167.70, N = 62516.292621.132222.322286.422491.902573.001. (CC) gcc options: -fno-strict-aliasing -fwrapv -O2 -fPIC -lpgcommon -lpgport -lpthread -lrt -lcrypt -ldl -lm

Darktable

Test: Boat - Acceleration: CPU-only

Linux 4.14.12-rc1Linux 4.4.110-rc1Linux 4.9.75-rc1OpenBenchmarking.orgSeconds, Fewer Is BetterDarktable 2.2.5Test: Boat - Acceleration: CPU-onlyKPTI OffKPTI On612182430SE +/- 0.11, N = 3SE +/- 0.05, N = 3SE +/- 0.07, N = 3SE +/- 0.03, N = 3SE +/- 0.05, N = 3SE +/- 0.10, N = 323.9923.9323.7923.8523.7623.79

Darktable

Test: Masskrug - Acceleration: CPU-only

Linux 4.14.12-rc1Linux 4.4.110-rc1Linux 4.9.75-rc1OpenBenchmarking.orgSeconds, Fewer Is BetterDarktable 2.2.5Test: Masskrug - Acceleration: CPU-onlyKPTI OffKPTI On3691215SE +/- 0.03, N = 3SE +/- 0.02, N = 3SE +/- 0.01, N = 3SE +/- 0.01, N = 3SE +/- 0.01, N = 3SE +/- 0.00, N = 310.8510.8910.8810.9310.7810.87

Darktable

Test: Server Room - Acceleration: CPU-only

Linux 4.14.12-rc1Linux 4.4.110-rc1Linux 4.9.75-rc1OpenBenchmarking.orgSeconds, Fewer Is BetterDarktable 2.2.5Test: Server Room - Acceleration: CPU-onlyKPTI OffKPTI On3691215SE +/- 0.01, N = 3SE +/- 0.01, N = 3SE +/- 0.01, N = 3SE +/- 0.01, N = 3SE +/- 0.02, N = 3SE +/- 0.01, N = 39.469.489.479.469.429.46

GIMP

Test: auto-levels

Linux 4.14.12-rc1Linux 4.4.110-rc1Linux 4.9.75-rc1OpenBenchmarking.orgSeconds, Fewer Is BetterGIMP 2.8.20Test: auto-levelsKPTI OffKPTI On1.15432.30863.46294.61725.7715SE +/- 0.09, N = 3SE +/- 0.01, N = 3SE +/- 0.11, N = 6SE +/- 0.10, N = 3SE +/- 0.26, N = 6SE +/- 0.17, N = 64.915.074.874.975.045.13

GIMP

Test: unsharp-mask

Linux 4.14.12-rc1Linux 4.4.110-rc1Linux 4.9.75-rc1OpenBenchmarking.orgSeconds, Fewer Is BetterGIMP 2.8.20Test: unsharp-maskKPTI OffKPTI On3691215SE +/- 0.02, N = 3SE +/- 0.06, N = 3SE +/- 0.02, N = 3SE +/- 0.01, N = 3SE +/- 0.00, N = 3SE +/- 0.03, N = 39.8910.509.8610.209.9110.31

Redis

Test: GET

Linux 4.14.12-rc1Linux 4.4.110-rc1Linux 4.9.75-rc1OpenBenchmarking.orgRequests Per Second, More Is BetterRedis 3.0.1Test: GETKPTI OffKPTI On700K1400K2100K2800K3500KSE +/- 158924.51, N = 6SE +/- 35057.08, N = 3SE +/- 32752.11, N = 3SE +/- 151348.40, N = 6SE +/- 116881.36, N = 6SE +/- 95045.09, N = 63026910.923052685.752341001.752300517.752553176.542559257.831. (CC) gcc options: -ggdb -rdynamic -lm -pthread

Redis

Test: SET

Linux 4.14.12-rc1Linux 4.4.110-rc1Linux 4.9.75-rc1OpenBenchmarking.orgRequests Per Second, More Is BetterRedis 3.0.1Test: SETKPTI OffKPTI On500K1000K1500K2000K2500KSE +/- 33207.10, N = 6SE +/- 18540.27, N = 3SE +/- 108574.29, N = 6SE +/- 145001.22, N = 6SE +/- 51100.50, N = 6SE +/- 98085.49, N = 62347933.212333107.581747502.251755528.811962011.961894524.901. (CC) gcc options: -ggdb -rdynamic -lm -pthread

Blender

Blend File: Barbershop - Compute: CPU-Only

Linux 4.14.12-rc1Linux 4.4.110-rc1Linux 4.9.75-rc1OpenBenchmarking.orgSeconds, Fewer Is BetterBlender 2.79Blend File: Barbershop - Compute: CPU-OnlyKPTI OffKPTI On50010001500200025002133.612137.362135.782134.232137.692134.45

Apache Benchmark

Static Web Page Serving

Linux 4.14.12-rc1Linux 4.4.110-rc1Linux 4.9.75-rc1OpenBenchmarking.orgRequests Per Second, More Is BetterApache Benchmark 2.4.7Static Web Page ServingKPTI OffKPTI On11K22K33K44K55KSE +/- 93.59, N = 3SE +/- 64.13, N = 3SE +/- 315.70, N = 3SE +/- 203.52, N = 3SE +/- 140.80, N = 3SE +/- 105.38, N = 343564.1641260.6249434.2047057.0944140.2841715.291. (CC) gcc options: -shared -fPIC -O2 -pthread

Phoronix Test Suite v10.8.5