ARMv7 Cortex A9 GCC 4.7 LTO Link-Time Optimizations

GCC 4.7 benchmarks of GCC 4.7.2 LTO. Testing the compiler link-time optimization performance with the -flto CFLAGS/CXXFLAGS. Benchmarking from a NVIDIA tegra 3 Cardhu quad-core ARM Cortex-A9 tablet. Benchmarking for future article on Phoronix by Michael Larabel.

Compare your own system(s) to this result file with the Phoronix Test Suite by running the command: phoronix-test-suite benchmark 1303016-PTS-GCC48ARM14
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February 26 2013
 
GCC LTO
February 28 2013
 
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Stock

Compiler Notes: --build=arm-linux-gnueabihf --disable-cloog-version-check --disable-libitm --disable-ppl-version-check --disable-sjlj-exceptions --disable-werror --enable-checking=release --enable-clocale=gnu --enable-cloog-backend=ppl --enable-gnu-unique-object --enable-languages=c,c++,go,fortran,objc,obj-c++ --enable-libstdcxx-debug --enable-libstdcxx-time=yes --enable-multiarch --enable-multilib --enable-nls --enable-objc-gc --enable-plugin --enable-shared --enable-threads=posix --host=arm-linux-gnueabihf --target=arm-linux-gnueabihf --with-arch=armv7-a --with-cloog --with-float=hard --with-fpu=vfpv3-d16 --with-mode=thumb -v
Processor Notes: Scaling Governor: ondemand

GCC LTO

Processor: ARMv7 rev 9 @ 1.40GHz (4 Cores), Motherboard: cardhu, Memory: 1024MB, Disk: 16GB SEM16G + 32GB SD32G, Graphics: NVIDIA TEGRA, Network: Realtek RTL8111/8168B

OS: Ubuntu 13.04, Kernel: 3.1.10-gfc993d9 (armv7l), Compiler: GCC 4.7, File-System: ext3, Screen Resolution: 1366x1536

ARMv7 Cortex A9 GCC 4.7 LTO Link-Time OptimizationsOpenBenchmarking.orgPhoronix Test SuiteARMv7 rev 9 @ 1.40GHz (4 Cores)cardhu1024MB16GB SEM16G + 32GB SD32GNVIDIA TEGRARealtek RTL8111/8168BUbuntu 13.043.1.10-gfc993d9 (armv7l)GCC 4.7ext31366x1536ProcessorMotherboardMemoryDiskGraphicsNetworkOSKernelCompilerFile-SystemScreen ResolutionARMv7 Cortex A9 GCC 4.7 LTO Link-Time Optimizations PerformanceSystem Logs- --build=arm-linux-gnueabihf --disable-cloog-version-check --disable-libitm --disable-ppl-version-check --disable-sjlj-exceptions --disable-werror --enable-checking=release --enable-clocale=gnu --enable-cloog-backend=ppl --enable-gnu-unique-object --enable-languages=c,c++,go,fortran,objc,obj-c++ --enable-libstdcxx-debug --enable-libstdcxx-time=yes --enable-multiarch --enable-multilib --enable-nls --enable-objc-gc --enable-plugin --enable-shared --enable-threads=posix --host=arm-linux-gnueabihf --target=arm-linux-gnueabihf --with-arch=armv7-a --with-cloog --with-float=hard --with-fpu=vfpv3-d16 --with-mode=thumb -v - Scaling Governor: ondemand

Stock vs. GCC LTO ComparisonPhoronix Test SuiteBaseline+36.5%+36.5%+73%+73%+109.5%+109.5%12.1%11.8%6.7%4.4%3.6%Time To Compile145.8%Time To Compile44.9%HWB Color SpaceBlurSharpenWAV To MP3Total TimeTimed PHP CompilationTimed ImageMagick CompilationGraphicsMagickGraphicsMagickGraphicsMagickLAME MP3 EncodingOpen FMM Nero2DStockGCC LTO

ARMv7 Cortex A9 GCC 4.7 LTO Link-Time Optimizationsvpxenc: vpxencgraphics-magick: Blurgraphics-magick: Sharpengraphics-magick: Resizinggraphics-magick: HWB Color Spacegraphics-magick: Local Adaptive Thresholdingbuild-imagemagick: Time To Compilebuild-php: Time To Compileencode-flac: WAV To FLACencode-mp3: WAV To MP3ffmpeg: H.264 HD To NTSC DVnero2d: Total TimeStockGCC LTO0.4017152533171123.07492.4340.5893.26354.364374.940.4019162537171627.511210.4840.6589.29354.494223.39OpenBenchmarking.org

VP8 libvpx Encoding

OpenBenchmarking.orgFrames Per Second, More Is BetterVP8 libvpx Encoding 1.1.0vpxencGCC LTOStock0.090.180.270.360.45SE +/- 0.00, N = 3SE +/- 0.00, N = 30.400.401. (CC) gcc options: -lvpx -lm -lpthread

GraphicsMagick

OpenBenchmarking.orgIterations Per Minute, More Is BetterGraphicsMagick 1.3.16Operation: BlurGCC LTOStock510152025SE +/- 0.00, N = 3SE +/- 0.33, N = 31917-flto1. (CC) gcc options: -std=gnu99 -fopenmp -O2 -pthread -lz -lm -lgomp -lpthread

OpenBenchmarking.orgIterations Per Minute, More Is BetterGraphicsMagick 1.3.16Operation: SharpenGCC LTOStock48121620SE +/- 0.25, N = 4SE +/- 0.25, N = 41615-flto1. (CC) gcc options: -std=gnu99 -fopenmp -O2 -pthread -lz -lm -lgomp -lpthread

OpenBenchmarking.orgIterations Per Minute, More Is BetterGraphicsMagick 1.3.16Operation: ResizingGCC LTOStock612182430SE +/- 0.00, N = 3SE +/- 0.00, N = 32525-flto1. (CC) gcc options: -std=gnu99 -fopenmp -O2 -pthread -lz -lm -lgomp -lpthread

OpenBenchmarking.orgIterations Per Minute, More Is BetterGraphicsMagick 1.3.16Operation: HWB Color SpaceGCC LTOStock918273645SE +/- 0.33, N = 3SE +/- 0.67, N = 33733-flto1. (CC) gcc options: -std=gnu99 -fopenmp -O2 -pthread -lz -lm -lgomp -lpthread

OpenBenchmarking.orgIterations Per Minute, More Is BetterGraphicsMagick 1.3.16Operation: Local Adaptive ThresholdingGCC LTOStock48121620SE +/- 0.29, N = 4SE +/- 0.29, N = 41717-flto1. (CC) gcc options: -std=gnu99 -fopenmp -O2 -pthread -lz -lm -lgomp -lpthread

Timed ImageMagick Compilation

OpenBenchmarking.orgSeconds, Fewer Is BetterTimed ImageMagick Compilation 6.8.1-10Time To CompileGCC LTOStock30060090012001500SE +/- 5.86, N = 3SE +/- 20.61, N = 31627.511123.07

Timed PHP Compilation

OpenBenchmarking.orgSeconds, Fewer Is BetterTimed PHP Compilation 5.2.9Time To CompileGCC LTOStock30060090012001500SE +/- 19.22, N = 3SE +/- 8.22, N = 41210.48492.43-flto1. (CC) gcc options: -O2 -pedantic -ldl -lz -lm

FLAC Audio Encoding

OpenBenchmarking.orgSeconds, Fewer Is BetterFLAC Audio Encoding 1.2.1WAV To FLACGCC LTOStock918273645SE +/- 0.62, N = 5SE +/- 0.50, N = 540.6540.58-flto1. (CXX) g++ options: -O2 -logg -lm

LAME MP3 Encoding

LAME is an MP3 encoder licensed under the LGPL. This test measures the time required to encode a WAV file to MP3 format. Learn more via the OpenBenchmarking.org test page.

OpenBenchmarking.orgSeconds, Fewer Is BetterLAME MP3 Encoding 3.99.3WAV To MP3GCC LTOStock20406080100SE +/- 0.03, N = 5SE +/- 0.05, N = 589.2993.26

FFmpeg

OpenBenchmarking.orgSeconds, Fewer Is BetterFFmpeg 1.1H.264 HD To NTSC DVGCC LTOStock80160240320400SE +/- 1.74, N = 3SE +/- 1.60, N = 3354.49354.361. (CC) gcc options: -lavdevice -lavfilter -lavformat -lavcodec -lswresample -lswscale -lavutil -ldl -lm -pthread

Open FMM Nero2D

OpenBenchmarking.orgSeconds, Fewer Is BetterOpen FMM Nero2D 2.0.2Total TimeGCC LTOStock90018002700360045004223.394374.94-flto1. (CXX) g++ options: -O2 -lfftw3 -llapack -lblas -lgfortran -lm

Stock

Compiler Notes: --build=arm-linux-gnueabihf --disable-cloog-version-check --disable-libitm --disable-ppl-version-check --disable-sjlj-exceptions --disable-werror --enable-checking=release --enable-clocale=gnu --enable-cloog-backend=ppl --enable-gnu-unique-object --enable-languages=c,c++,go,fortran,objc,obj-c++ --enable-libstdcxx-debug --enable-libstdcxx-time=yes --enable-multiarch --enable-multilib --enable-nls --enable-objc-gc --enable-plugin --enable-shared --enable-threads=posix --host=arm-linux-gnueabihf --target=arm-linux-gnueabihf --with-arch=armv7-a --with-cloog --with-float=hard --with-fpu=vfpv3-d16 --with-mode=thumb -v
Processor Notes: Scaling Governor: ondemand

Testing initiated at 26 February 2013 10:08 by user ubuntu.

GCC LTO

Processor: ARMv7 rev 9 @ 1.40GHz (4 Cores), Motherboard: cardhu, Memory: 1024MB, Disk: 16GB SEM16G + 32GB SD32G, Graphics: NVIDIA TEGRA, Network: Realtek RTL8111/8168B

OS: Ubuntu 13.04, Kernel: 3.1.10-gfc993d9 (armv7l), Compiler: GCC 4.7, File-System: ext3, Screen Resolution: 1366x1536

Compiler Notes: --build=arm-linux-gnueabihf --disable-cloog-version-check --disable-libitm --disable-ppl-version-check --disable-sjlj-exceptions --disable-werror --enable-checking=release --enable-clocale=gnu --enable-cloog-backend=ppl --enable-gnu-unique-object --enable-languages=c,c++,go,fortran,objc,obj-c++ --enable-libstdcxx-debug --enable-libstdcxx-time=yes --enable-multiarch --enable-multilib --enable-nls --enable-objc-gc --enable-plugin --enable-shared --enable-threads=posix --host=arm-linux-gnueabihf --target=arm-linux-gnueabihf --with-arch=armv7-a --with-cloog --with-float=hard --with-fpu=vfpv3-d16 --with-mode=thumb -v
Processor Notes: Scaling Governor: ondemand

Testing initiated at 28 February 2013 06:04 by user ubuntu.