Linux x86 32-bit KPTI Meltdown Impact

Intel Core 2 Duo T9300 testing of Linux 32-bit Kernel Page Table Isolation (KPTI/PTI) patches staged for the mainline kernel. Benchmarks by Michael Larabel for a future article.

Compare your own system(s) to this result file with the Phoronix Test Suite by running the command: phoronix-test-suite benchmark 1807236-RA-LINUXX86399
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KPTI Disabled
July 22 2018
  5 Hours, 20 Minutes
KPTI Enabled
July 22 2018
  5 Hours, 32 Minutes
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  5 Hours, 26 Minutes
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Linux x86 32-bit KPTI Meltdown ImpactProcessorMotherboardChipsetMemoryDiskGraphicsAudioNetworkOSKernelDesktopDisplay ServerDisplay DriverCompilerFile-SystemScreen ResolutionKPTI DisabledKPTI EnabledIntel Core 2 Duo T9300 @ 2.50GHz (2 Cores)LENOVO 6459CTO (7LETB2WW 2.12 BIOS)Intel Mobile PM965/GM965/GL960 + ICH8M-E4096MB100GB Hitachi HTS72201NVIDIA Quadro NVS 140M 128MBAnalog Devices AD1984Intel 82566MM Gigabit Connection + Intel PRO/WirelessUbuntu 16.044.18.0-rc4-tip-pti-phoronix (i686) 20180722Unity 7.4.5X Server 1.19.6modesetting 1.19.6GCC 5.4.0 20160609ext41680x1050NVIDIA Quadro NVS 140MOpenBenchmarking.orgCompiler Details- --build=i686-linux-gnu --disable-browser-plugin --disable-vtable-verify --disable-werror --enable-checking=release --enable-clocale=gnu --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 --enable-plugin --enable-shared --enable-targets=all --enable-threads=posix --host=i686-linux-gnu --target=i686-linux-gnu --with-arch-32=i686 --with-arch-directory=i386 --with-default-libstdcxx-abi=new --with-multilib-list=m32,m64,mx32 --with-tune=generic -v Disk Details- CFQ / errors=remount-ro,relatime,rwProcessor Details- Scaling Governor: acpi-cpufreq ondemandPython Details- Python 2.7.12 + Python 3.5.2Security Details- KPTI Disabled: __user pointer sanitization + Full generic retpoline Protection - KPTI Enabled: KPTI + __user pointer sanitization + Full generic retpoline Protection

KPTI Disabled vs. KPTI Enabled ComparisonPhoronix Test SuiteBaseline+16.1%+16.1%+32.2%+32.2%+48.3%+48.3%192.168.1.55 - T.R.R - 10 Seconds64.2%2 - Process49.5%2 - Thread47.5%4 - Thread44.5%4 - Process44.4%192.168.1.55 - U.R.R - 10 Seconds37%SET34.9%GET30.8%S.V.M.P27.4%Context Switching16.1%S.W.P.S14.6%resize13.3%http12.9%auto-levels10.8%Buffer Test - Normal Load - Read Only10.1%unsharp-mask10%Buffer Test - Single Thread - Read Only5.4%T.T.C.C.G.C3.4%Socket Activity2.8%Time To Compile2.2%NetperfHackbenchHackbenchHackbenchHackbenchNetperfRedisRedisStress-NGStress-NGNGINX BenchmarkGIMPGo BenchmarksGIMPPostgreSQL pgbenchGIMPPostgreSQL pgbenchGitStress-NGTimed Apache CompilationKPTI DisabledKPTI Enabled

IOzone

The IOzone benchmark tests the hard disk drive / file-system performance. Learn more via the OpenBenchmarking.org test page.

OpenBenchmarking.orgMB/s, More Is BetterIOzone 3.465Record Size: 4Kb - File Size: 8GB - Disk Test: Read PerformanceKPTI EnabledKPTI Disabled1122334455SE +/- 3.67, N = 6SE +/- 3.46, N = 649.8749.751. (CC) gcc options: -O3

FS-Mark

FS_Mark is designed to test a system's file-system performance. Learn more via the OpenBenchmarking.org test page.

OpenBenchmarking.orgFiles/s, More Is BetterFS-Mark 3.3Test: 5000 Files, 1MB Size, 4 ThreadsKPTI EnabledKPTI Disabled714212835SE +/- 1.24, N = 6SE +/- 1.16, N = 631.8732.131. (CC) gcc options: -static

SQLite

This is a simple benchmark of SQLite. At present this test profile just measures the time to perform a pre-defined number of insertions on an indexed database. Learn more via the OpenBenchmarking.org test page.

OpenBenchmarking.orgSeconds, Fewer Is BetterSQLite 3.22Timed SQLite InsertionsKPTI EnabledKPTI Disabled90180270360450SE +/- 12.21, N = 6SE +/- 13.63, N = 6424.31429.231. (CC) gcc options: -O2 -lz -ldl -lpthread

IOzone

The IOzone benchmark tests the hard disk drive / file-system performance. Learn more via the OpenBenchmarking.org test page.

OpenBenchmarking.orgMB/s, More Is BetterIOzone 3.465Record Size: 4Kb - File Size: 8GB - Disk Test: Write PerformanceKPTI EnabledKPTI Disabled1122334455SE +/- 2.15, N = 6SE +/- 2.23, N = 648.4048.591. (CC) gcc options: -O3

Timed PHP Compilation

This test times how long it takes to build PHP 5 with the Zend engine. Learn more via the OpenBenchmarking.org test page.

OpenBenchmarking.orgSeconds, Fewer Is BetterTimed PHP Compilation 7.1.9Time To CompileKPTI EnabledKPTI Disabled80160240320400SE +/- 0.17, N = 3SE +/- 0.14, N = 3354.03350.001. (CC) gcc options: -O2 -pedantic -ldl -lz -lm

FS-Mark

FS_Mark is designed to test a system's file-system performance. Learn more via the OpenBenchmarking.org test page.

OpenBenchmarking.orgFiles/s, More Is BetterFS-Mark 3.3Test: 4000 Files, 32 Sub Dirs, 1MB SizeKPTI EnabledKPTI Disabled510152025SE +/- 0.27, N = 3SE +/- 0.35, N = 319.5719.631. (CC) gcc options: -static

NGINX Benchmark

This is a test of ab, which is the Apache Benchmark program running against nginx. This test profile measures how many requests per second a given system can sustain when carrying out 2,000,000 requests with 500 requests being carried out concurrently. Learn more via the OpenBenchmarking.org test page.

OpenBenchmarking.orgRequests Per Second, More Is BetterNGINX Benchmark 1.9.9Static Web Page ServingKPTI EnabledKPTI Disabled2K4K6K8K10KSE +/- 7.66, N = 3SE +/- 5.93, N = 310155.3611641.991. (CC) gcc options: -lpthread -lcrypt -lcrypto -lz -O3 -march=native

Hackbench

This is a benchmark of Hackbench, a test of the Linux kernel scheduler. Learn more via the OpenBenchmarking.org test page.

OpenBenchmarking.orgSeconds, Fewer Is BetterHackbenchCount: 4 - Type: ThreadKPTI EnabledKPTI Disabled306090120150SE +/- 1.22, N = 3SE +/- 0.45, N = 3143.6899.411. (CC) gcc options: -lpthread

OpenBenchmarking.orgSeconds, Fewer Is BetterHackbenchCount: 4 - Type: ProcessKPTI EnabledKPTI Disabled306090120150SE +/- 0.37, N = 3SE +/- 1.68, N = 3137.2595.031. (CC) gcc options: -lpthread

Timed Apache Compilation

This test times how long it takes to build the Apache HTTP Server. Learn more via the OpenBenchmarking.org test page.

OpenBenchmarking.orgSeconds, Fewer Is BetterTimed Apache Compilation 2.4.7Time To CompileKPTI EnabledKPTI Disabled20406080100SE +/- 0.14, N = 3SE +/- 0.13, N = 3106.75104.47

PostgreSQL pgbench

This is a simple benchmark of PostgreSQL using pgbench. Learn more via the OpenBenchmarking.org test page.

OpenBenchmarking.orgTPS, More Is BetterPostgreSQL pgbench 10.3Scaling: Buffer Test - Test: Normal Load - Mode: Read OnlyKPTI EnabledKPTI Disabled4K8K12K16K20KSE +/- 17.90, N = 3SE +/- 51.89, N = 315937.0017545.211. (CC) gcc options: -fno-strict-aliasing -fwrapv -O2 -lpgcommon -lpgport -lpq -lpthread -lrt -lcrypt -ldl -lm

OpenBenchmarking.orgTPS, More Is BetterPostgreSQL pgbench 10.3Scaling: Buffer Test - Test: Single Thread - Mode: Read WriteKPTI EnabledKPTI Disabled306090120150SE +/- 0.50, N = 3SE +/- 0.36, N = 3117.93118.081. (CC) gcc options: -fno-strict-aliasing -fwrapv -O2 -lpgcommon -lpgport -lpq -lpthread -lrt -lcrypt -ldl -lm

OpenBenchmarking.orgTPS, More Is BetterPostgreSQL pgbench 10.3Scaling: Buffer Test - Test: Single Thread - Mode: Read OnlyKPTI EnabledKPTI Disabled14002800420056007000SE +/- 10.56, N = 3SE +/- 4.07, N = 36047.476376.031. (CC) gcc options: -fno-strict-aliasing -fwrapv -O2 -lpgcommon -lpgport -lpq -lpthread -lrt -lcrypt -ldl -lm

OpenBenchmarking.orgTPS, More Is BetterPostgreSQL pgbench 10.3Scaling: Buffer Test - Test: Normal Load - Mode: Read WriteKPTI EnabledKPTI Disabled70140210280350SE +/- 0.71, N = 3SE +/- 1.46, N = 3337.79336.471. (CC) gcc options: -fno-strict-aliasing -fwrapv -O2 -lpgcommon -lpgport -lpq -lpthread -lrt -lcrypt -ldl -lm

Go Benchmarks

Benchmark for monitoring real time performance of the Go implementation for HTTP, JSON and garbage testing per iteration. Learn more via the OpenBenchmarking.org test page.

OpenBenchmarking.orgNanoseconds/Operation, Fewer Is BetterGo BenchmarksTest: buildKPTI EnabledKPTI Disabled8000M16000M24000M32000M40000MSE +/- 999111592.41, N = 6SE +/- 1064359980.77, N = 63866232813538335994090

Stress-NG

Stress-NG is a Linux stress tool developed by Colin King of Canonical. Learn more via the OpenBenchmarking.org test page.

OpenBenchmarking.orgBogo Ops/s, More Is BetterStress-NG 0.07.26Test: Socket ActivityKPTI EnabledKPTI Disabled110220330440550SE +/- 45.63, N = 6SE +/- 37.29, N = 6472.34485.431. (CC) gcc options: -O2 -std=gnu99 -lm -lz -lcrypt -lrt -lpthread -laio -lc

OpenBenchmarking.orgBogo Ops/s, More Is BetterStress-NG 0.07.26Test: System V Message PassingKPTI EnabledKPTI Disabled150K300K450K600K750KSE +/- 37806.78, N = 6SE +/- 45152.74, N = 6533956.31680410.101. (CC) gcc options: -O2 -std=gnu99 -lm -lz -lcrypt -lrt -lpthread -laio -lc

Hackbench

This is a benchmark of Hackbench, a test of the Linux kernel scheduler. Learn more via the OpenBenchmarking.org test page.

OpenBenchmarking.orgSeconds, Fewer Is BetterHackbenchCount: 2 - Type: ThreadKPTI EnabledKPTI Disabled1632486480SE +/- 0.37, N = 3SE +/- 0.17, N = 370.2447.611. (CC) gcc options: -lpthread

OpenBenchmarking.orgSeconds, Fewer Is BetterHackbenchCount: 2 - Type: ProcessKPTI EnabledKPTI Disabled1530456075SE +/- 0.16, N = 3SE +/- 0.24, N = 365.8144.031. (CC) gcc options: -lpthread

FS-Mark

FS_Mark is designed to test a system's file-system performance. Learn more via the OpenBenchmarking.org test page.

OpenBenchmarking.orgFiles/s, More Is BetterFS-Mark 3.3Test: 1000 Files, 1MB SizeKPTI EnabledKPTI Disabled510152025SE +/- 0.06, N = 3SE +/- 0.09, N = 319.4019.331. (CC) gcc options: -static

Flexible IO Tester

Fio is an advanced disk benchmark that depends upon the kernel's AIO access library. Learn more via the OpenBenchmarking.org test page.

OpenBenchmarking.orgMB/s, More Is BetterFlexible IO Tester 3.1Type: Random Read - IO Engine: Linux AIO - Buffered: No - Direct: Yes - Block Size: 4KB - Disk Target: Default Test DirectoryKPTI EnabledKPTI Disabled0.23180.46360.69540.92721.159SE +/- 0.02, N = 4SE +/- 0.01, N = 31.031.021. (CC) gcc options: -rdynamic -std=gnu99 -ffast-math -include -O3 -U_FORTIFY_SOURCE -ll -lrt -laio -lz -lm -lpthread -ldl

GIMP

OpenBenchmarking.orgSeconds, Fewer Is BetterGIMP 2.8.16Test: unsharp-maskKPTI EnabledKPTI Disabled918273645SE +/- 0.02, N = 3SE +/- 0.05, N = 338.5235.01

Flexible IO Tester

Fio is an advanced disk benchmark that depends upon the kernel's AIO access library. Learn more via the OpenBenchmarking.org test page.

OpenBenchmarking.orgMB/s, More Is BetterFlexible IO Tester 3.1Type: Random Write - IO Engine: Linux AIO - Buffered: No - Direct: Yes - Block Size: 4KB - Disk Target: Default Test DirectoryKPTI EnabledKPTI Disabled0.1980.3960.5940.7920.99SE +/- 0.00, N = 3SE +/- 0.00, N = 30.880.881. (CC) gcc options: -rdynamic -std=gnu99 -ffast-math -include -O3 -U_FORTIFY_SOURCE -ll -lrt -laio -lz -lm -lpthread -ldl

OpenBenchmarking.orgIOPS, More Is BetterFlexible IO Tester 3.1Type: Sequential Read - IO Engine: Linux AIO - Buffered: No - Direct: Yes - Block Size: 4KB - Disk Target: Default Test DirectoryKPTI Enabled2K4K6K8K10K101001. (CC) gcc options: -rdynamic -std=gnu99 -ffast-math -include -O3 -U_FORTIFY_SOURCE -ll -lrt -laio -lz -lm -lpthread -ldl

OpenBenchmarking.orgMB/s, More Is BetterFlexible IO Tester 3.1Type: Sequential Read - IO Engine: Linux AIO - Buffered: No - Direct: Yes - Block Size: 4KB - Disk Target: Default Test DirectoryKPTI EnabledKPTI Disabled918273645SE +/- 0.29, N = 3SE +/- 0.07, N = 338.8738.171. (CC) gcc options: -rdynamic -std=gnu99 -ffast-math -include -O3 -U_FORTIFY_SOURCE -ll -lrt -laio -lz -lm -lpthread -ldl

OpenBenchmarking.orgMB/s, More Is BetterFlexible IO Tester 3.1Type: Sequential Write - IO Engine: Linux AIO - Buffered: No - Direct: Yes - Block Size: 4KB - Disk Target: Default Test DirectoryKPTI EnabledKPTI Disabled816243240SE +/- 0.03, N = 3SE +/- 0.06, N = 332.8732.801. (CC) gcc options: -rdynamic -std=gnu99 -ffast-math -include -O3 -U_FORTIFY_SOURCE -ll -lrt -laio -lz -lm -lpthread -ldl

Stress-NG

Stress-NG is a Linux stress tool developed by Colin King of Canonical. Learn more via the OpenBenchmarking.org test page.

OpenBenchmarking.orgBogo Ops/s, More Is BetterStress-NG 0.07.26Test: CPU StressKPTI EnabledKPTI Disabled60120180240300SE +/- 0.21, N = 3SE +/- 0.95, N = 3265.08266.651. (CC) gcc options: -O2 -std=gnu99 -lm -lz -lcrypt -lrt -lpthread -laio -lc

OpenBenchmarking.orgBogo Ops/s, More Is BetterStress-NG 0.07.26Test: Context SwitchingKPTI EnabledKPTI Disabled60K120K180K240K300KSE +/- 175.75, N = 3SE +/- 499.16, N = 3255469.54296493.461. (CC) gcc options: -O2 -std=gnu99 -lm -lz -lcrypt -lrt -lpthread -laio -lc

LuaJIT

This test profile is a collection of Lua scripts/benchmarks run against a locally-built copy of LuaJIT upstream. Learn more via the OpenBenchmarking.org test page.

OpenBenchmarking.orgMflops, More Is BetterLuaJIT 2.0.5Test: CompositeKPTI EnabledKPTI Disabled120240360480600SE +/- 0.60, N = 3SE +/- 1.55, N = 3545.95541.901. (CC) gcc options: -lm -ldl -O2 -fomit-frame-pointer -U_FORTIFY_SOURCE -march=i686 -fno-stack-protector

Cryptsetup

OpenBenchmarking.orgIterations Per Second, More Is BetterCryptsetup 1.6.6PBKDF2-whirlpoolKPTI Disabled13K26K39K52K65KSE +/- 379.11, N = 362698

OpenBenchmarking.orgIterations Per Second, More Is BetterCryptsetup 1.6.6PBKDF2-sha512KPTI EnabledKPTI Disabled20K40K60K80K100KSE +/- 100.85, N = 3SE +/- 113.33, N = 38661186232

OpenBenchmarking.orgIterations Per Second, More Is BetterCryptsetupPBKDF2-whirlpoolKPTI Enabled14K28K42K56K70KSE +/- 81.67, N = 363218

FS-Mark

FS_Mark is designed to test a system's file-system performance. Learn more via the OpenBenchmarking.org test page.

OpenBenchmarking.orgFiles/s, More Is BetterFS-Mark 3.3Test: 1000 Files, 1MB Size, No Sync/FSyncKPTI EnabledKPTI Disabled1326395265SE +/- 0.20, N = 3SE +/- 0.77, N = 659.6759.131. (CC) gcc options: -static

GIMP

OpenBenchmarking.orgSeconds, Fewer Is BetterGIMP 2.8.16Test: resizeKPTI EnabledKPTI Disabled3691215SE +/- 1.12, N = 6SE +/- 1.08, N = 612.9211.40

ebizzy

This is a test of ebizzy, a program to generate workloads resembling web server workloads. Learn more via the OpenBenchmarking.org test page.

OpenBenchmarking.orgRecords/s, More Is Betterebizzy 0.3KPTI EnabledKPTI Disabled15K30K45K60K75KSE +/- 26.85, N = 3SE +/- 131.29, N = 369377691201. (CC) gcc options: -pthread -lpthread -O3 -march=native

GIMP

OpenBenchmarking.orgSeconds, Fewer Is BetterGIMP 2.8.16Test: auto-levelsKPTI EnabledKPTI Disabled510152025SE +/- 0.02, N = 3SE +/- 0.03, N = 318.7416.92

Redis

Redis is an open-source data structure server. Learn more via the OpenBenchmarking.org test page.

OpenBenchmarking.orgRequests Per Second, More Is BetterRedis 4.0.8Test: SETKPTI EnabledKPTI Disabled50K100K150K200K250KSE +/- 230.44, N = 3SE +/- 919.45, N = 3156625.93211290.461. (CC) gcc options: -ggdb -rdynamic -lm -ldl -pthread

Netperf

Netperf is a network bandwidth testing software. This test profile is used for automated testing of a netperf client and requires you have access to a netperf server. Learn more via the OpenBenchmarking.org test page.

OpenBenchmarking.orgTransaction Rate Per Second, More Is BetterNetperf 2.7.0Server: 192.168.1.55 - Test: UDP Request Response - Duration: 10 SecondsKPTI EnabledKPTI Disabled2004006008001000SE +/- 161.94, N = 6SE +/- 12.67, N = 3675.22924.811. (CC) gcc options: -O3 -march=native -lm

OpenBenchmarking.orgTransaction Rate Per Second, More Is BetterNetperf 2.7.0Server: 192.168.1.55 - Test: TCP Request Response - Duration: 10 SecondsKPTI EnabledKPTI Disabled2004006008001000SE +/- 176.75, N = 6SE +/- 13.79, N = 3562.27923.381. (CC) gcc options: -O3 -march=native -lm

Redis

Redis is an open-source data structure server. Learn more via the OpenBenchmarking.org test page.

OpenBenchmarking.orgRequests Per Second, More Is BetterRedis 4.0.8Test: GETKPTI EnabledKPTI Disabled50K100K150K200K250KSE +/- 409.56, N = 3SE +/- 786.97, N = 3184753.64241570.461. (CC) gcc options: -ggdb -rdynamic -lm -ldl -pthread

Git

This test measures the time needed to carry out some sample Git operations on an example, static repository that happens to be a copy of the GNOME GTK tool-kit repository. Learn more via the OpenBenchmarking.org test page.

OpenBenchmarking.orgSeconds, Fewer Is BetterGitTime To Complete Common Git CommandsKPTI EnabledKPTI Disabled48121620SE +/- 0.13, N = 3SE +/- 0.24, N = 315.0414.551. git version 2.7.4

Go Benchmarks

Benchmark for monitoring real time performance of the Go implementation for HTTP, JSON and garbage testing per iteration. Learn more via the OpenBenchmarking.org test page.

OpenBenchmarking.orgNanoseconds/Operation, Fewer Is BetterGo BenchmarksTest: httpKPTI EnabledKPTI Disabled15K30K45K60K75KSE +/- 112.67, N = 3SE +/- 127.55, N = 36931761401

OpenBenchmarking.orgNanoseconds/Operation, Fewer Is BetterGo BenchmarksTest: garbageKPTI EnabledKPTI Disabled3M6M9M12M15MSE +/- 19080.64, N = 3SE +/- 89944.00, N = 31606030216248856

Netperf

Netperf is a network bandwidth testing software. This test profile is used for automated testing of a netperf client and requires you have access to a netperf server. Learn more via the OpenBenchmarking.org test page.

OpenBenchmarking.orgMegabits/sec Throughput, More Is BetterNetperf 2.7.0Server: 192.168.1.55 - Test: TCP Send File - Duration: 10 SecondsKPTI EnabledKPTI Disabled2004006008001000SE +/- 0.04, N = 3SE +/- 0.15, N = 3936.14935.241. (CC) gcc options: -O3 -march=native -lm

OpenBenchmarking.orgMegabits/sec Throughput, More Is BetterNetperf 2.7.0Server: 192.168.1.55 - Test: TCP Stream - Server To Client - Duration: 10 SecondsKPTI EnabledKPTI Disabled2004006008001000SE +/- 0.03, N = 3SE +/- 0.06, N = 3935.40935.401. (CC) gcc options: -O3 -march=native -lm

OpenBenchmarking.orgMegabits/sec Throughput, More Is BetterNetperf 2.7.0Server: 192.168.1.55 - Test: UDP Stream - Server To Client - 10G - Duration: 10 SecondsKPTI EnabledKPTI Disabled2004006008001000SE +/- 0.00, N = 3SE +/- 0.12, N = 3956.57956.191. (CC) gcc options: -O3 -march=native -lm

OpenBenchmarking.orgMegabits/sec Throughput, More Is BetterNetperf 2.7.0Server: 192.168.1.55 - Test: TCP Stream - Client To Server - Duration: 10 SecondsKPTI EnabledKPTI Disabled2004006008001000SE +/- 0.29, N = 3SE +/- 0.38, N = 3784.03783.191. (CC) gcc options: -O3 -march=native -lm

Go Benchmarks

Benchmark for monitoring real time performance of the Go implementation for HTTP, JSON and garbage testing per iteration. Learn more via the OpenBenchmarking.org test page.

OpenBenchmarking.orgNanoseconds/Operation, Fewer Is BetterGo BenchmarksTest: jsonKPTI EnabledKPTI Disabled20M40M60M80M100MSE +/- 106508.44, N = 3SE +/- 306988.41, N = 38011756580573177