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
Jump To Table - Results

View

Do Not Show Noisy Results
Do Not Show Results With Incomplete Data
Do Not Show Results With Little Change/Spread
List Notable Results
Show Result Confidence Charts
Allow Limiting Results To Certain Suite(s)

Statistics

Show Overall Harmonic Mean(s)
Show Overall Geometric Mean
Show Wins / Losses Counts (Pie Chart)
Normalize Results
Remove Outliers Before Calculating Averages

Graph Settings

Force Line Graphs Where Applicable
Convert To Scalar Where Applicable
Prefer Vertical Bar Graphs

Multi-Way Comparison

Condense Multi-Option Tests Into Single Result Graphs

Table

Show Detailed System Result Table

Run Management

Highlight
Result
Toggle/Hide
Result
Result
Identifier
Performance Per
Dollar
Date
Run
  Test
  Duration
Stock
February 26 2013
 
GCC LTO
February 28 2013
 
Invert Behavior (Only Show Selected Data)
 
Only show results matching title/arguments (delimit multiple options with a comma):
Do not show results matching title/arguments (delimit multiple options with a comma):

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 Optimizationsffmpeg: H.264 HD To NTSC DVencode-flac: WAV To FLACgraphics-magick: Blurgraphics-magick: Sharpengraphics-magick: Resizinggraphics-magick: HWB Color Spacegraphics-magick: Local Adaptive Thresholdingencode-mp3: WAV To MP3nero2d: Total Timebuild-imagemagick: Time To Compilebuild-php: Time To Compilevpxenc: vpxencStockGCC LTO354.3640.58171525331793.264374.941123.07492.430.40354.4940.65191625371789.294223.391627.511210.480.40OpenBenchmarking.org

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

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

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

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

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

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

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

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.