EXT4 File-System Mount Option Tuning

Intel Core i7 720Q with Intel SSD benchmarking of various EXT4 file-system mount options. EXT4 testing from Ubuntu 12.10 64-bit with the Linux 3.5 kernel. Benchmarking by Michael Larabel for a future article looking at Linux file-system performance on Phoronix.

Compare your own system(s) to this result file with the Phoronix Test Suite by running the command: phoronix-test-suite benchmark 1211159-RA-EXT4FILES89
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November 14 2012
 
nobarrier
November 14 2012
 
data=journal
November 15 2012
 
data=writeback
November 15 2012
 
nodelalloc
November 15 2012
 
discard
November 15 2012
 
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Compiler Notes: --build=x86_64-linux-gnu --disable-werror --enable-checking=release --enable-clocale=gnu --enable-gnu-unique-object --enable-languages=c,c++,go,fortran,objc,obj-c++ --enable-libstdcxx-debug --enable-libstdcxx-time=yes --enable-nls --enable-objc-gc --enable-plugin --enable-shared --enable-threads=posix --host=x86_64-linux-gnu --target=x86_64-linux-gnu --with-arch-32=i686 --with-tune=generic -v
Disk Notes: DEADLINE / data=ordered,relatime,rw
System Notes: Disk Scheduler: DEADLINE. Python 2.7.3. Compiz was running on this system.

nobarrier

Compiler Notes: --build=x86_64-linux-gnu --disable-werror --enable-checking=release --enable-clocale=gnu --enable-gnu-unique-object --enable-languages=c,c++,go,fortran,objc,obj-c++ --enable-libstdcxx-debug --enable-libstdcxx-time=yes --enable-nls --enable-objc-gc --enable-plugin --enable-shared --enable-threads=posix --host=x86_64-linux-gnu --target=x86_64-linux-gnu --with-arch-32=i686 --with-tune=generic -v
Disk Notes: DEADLINE / data=ordered,nobarrier,relatime,rw
System Notes: Disk Scheduler: DEADLINE. Python 2.7.3. Compiz was running on this system.

data=journal

Compiler Notes: --build=x86_64-linux-gnu --disable-werror --enable-checking=release --enable-clocale=gnu --enable-gnu-unique-object --enable-languages=c,c++,go,fortran,objc,obj-c++ --enable-libstdcxx-debug --enable-libstdcxx-time=yes --enable-nls --enable-objc-gc --enable-plugin --enable-shared --enable-threads=posix --host=x86_64-linux-gnu --target=x86_64-linux-gnu --with-arch-32=i686 --with-tune=generic -v
Disk Notes: DEADLINE / data=journal,nodelalloc,relatime,rw
System Notes: Disk Scheduler: DEADLINE. Python 2.7.3. Compiz was running on this system.

data=writeback

Compiler Notes: --build=x86_64-linux-gnu --disable-werror --enable-checking=release --enable-clocale=gnu --enable-gnu-unique-object --enable-languages=c,c++,go,fortran,objc,obj-c++ --enable-libstdcxx-debug --enable-libstdcxx-time=yes --enable-nls --enable-objc-gc --enable-plugin --enable-shared --enable-threads=posix --host=x86_64-linux-gnu --target=x86_64-linux-gnu --with-arch-32=i686 --with-tune=generic -v
Disk Notes: DEADLINE / data=writeback,relatime,rw
System Notes: Disk Scheduler: DEADLINE. Python 2.7.3. Compiz was running on this system.

nodelalloc

Compiler Notes: --build=x86_64-linux-gnu --disable-werror --enable-checking=release --enable-clocale=gnu --enable-gnu-unique-object --enable-languages=c,c++,go,fortran,objc,obj-c++ --enable-libstdcxx-debug --enable-libstdcxx-time=yes --enable-nls --enable-objc-gc --enable-plugin --enable-shared --enable-threads=posix --host=x86_64-linux-gnu --target=x86_64-linux-gnu --with-arch-32=i686 --with-tune=generic -v
Disk Notes: DEADLINE / data=ordered,nodelalloc,relatime,rw
System Notes: Disk Scheduler: DEADLINE. Python 2.7.3. Compiz was running on this system.

discard

Processor: Intel Core i7 720Q @ 1.60GHz (8 Cores), Motherboard: LENOVO 4318CTO, Chipset: Intel Core DMI, Memory: 2 x 2048 MB DDR3-1066MHz, Disk: 160GB INTEL SSDSA2M160, Graphics: NVIDIA Quadro FX 880M 1024MB (405/324MHz), Audio: Conexant CX20585, Network: Intel 82577LM Gigabit Connection + Intel Centrino Ultimate-N 6300

OS: Ubuntu 12.10, Kernel: 3.5.0-17-generic (x86_64), Desktop: Unity 6.8.0, Display Server: X Server 1.13.0, Display Driver: nouveau 1.0.2, OpenGL: 3.0 Mesa 9.0 Gallium 0.4, Compiler: GCC 4.7, File-System: ext4, Screen Resolution: 1600x900

Compiler Notes: --build=x86_64-linux-gnu --disable-werror --enable-checking=release --enable-clocale=gnu --enable-gnu-unique-object --enable-languages=c,c++,go,fortran,objc,obj-c++ --enable-libstdcxx-debug --enable-libstdcxx-time=yes --enable-nls --enable-objc-gc --enable-plugin --enable-shared --enable-threads=posix --host=x86_64-linux-gnu --target=x86_64-linux-gnu --with-arch-32=i686 --with-tune=generic -v
Disk Notes: DEADLINE / data=ordered,discard,relatime,rw
System Notes: Disk Scheduler: DEADLINE. Python 2.7.3. Compiz was running on this system.

EXT4 File-System Mount Option TuningOpenBenchmarking.orgPhoronix Test SuiteIntel Core i7 720Q @ 1.60GHz (8 Cores)LENOVO 4318CTOIntel Core DMI2 x 2048 MB DDR3-1066MHz160GB INTEL SSDSA2M160NVIDIA Quadro FX 880M 1024MB (405/324MHz)Conexant CX20585Intel 82577LM Gigabit Connection + Intel Centrino Ultimate-N 6300Ubuntu 12.103.5.0-17-generic (x86_64)Unity 6.8.0X Server 1.13.0nouveau 1.0.23.0 Mesa 9.0 Gallium 0.4GCC 4.7ext41600x900ProcessorMotherboardChipsetMemoryDiskGraphicsAudioNetworkOSKernelDesktopDisplay ServerDisplay DriverOpenGLCompilerFile-SystemScreen ResolutionEXT4 File-System Mount Option Tuning BenchmarksSystem Logs- --build=x86_64-linux-gnu --disable-werror --enable-checking=release --enable-clocale=gnu --enable-gnu-unique-object --enable-languages=c,c++,go,fortran,objc,obj-c++ --enable-libstdcxx-debug --enable-libstdcxx-time=yes --enable-nls --enable-objc-gc --enable-plugin --enable-shared --enable-threads=posix --host=x86_64-linux-gnu --target=x86_64-linux-gnu --with-arch-32=i686 --with-tune=generic -v - Defaults: DEADLINE / data=ordered,relatime,rw- nobarrier: DEADLINE / data=ordered,nobarrier,relatime,rw- data=journal: DEADLINE / data=journal,nodelalloc,relatime,rw- data=writeback: DEADLINE / data=writeback,relatime,rw- nodelalloc: DEADLINE / data=ordered,nodelalloc,relatime,rw- discard: DEADLINE / data=ordered,discard,relatime,rw- Disk Scheduler: DEADLINE. Python 2.7.3. Compiz was running on this system.

Defaultsnobarrierdata=journaldata=writebacknodelallocdiscardResult OverviewPhoronix Test Suite100%175%249%324%Compile BenchThreaded I/O TesterFlexible IO TesterFS-MarkDbenchIOzone

EXT4 File-System Mount Option Tuningfio: Intel IOMeter File Server Access Patternfs-mark: 1000 Files, 1MB Sizefs-mark: 5000 Files, 1MB Size, 4 Threadsfs-mark: 4000 Files, 32 Sub Dirs, 1MB Sizefs-mark: 1000 Files, 1MB Size, No Sync/FSyncdbench: 1iozone: 1MB - 8GB - Read Performanceiozone: 4Kb - 8GB - Read Performanceiozone: 1MB - 8GB - Write Performanceiozone: 4Kb - 8GB - Write Performanceiozone: 64Kb - 8GB - Read Performanceiozone: 64Kb - 8GB - Write Performancetiobench: Rand Write - 64MB - 4tiobench: Rand Write - 64MB - 8compilebench: Compilecompilebench: Initial CreateDefaultsnobarrierdata=journaldata=writebacknodelallocdiscard102.9881.1397.4780.90146.70243.27194.91204.5199.6399.73215.91101.1495.3895.91104.0296.33102.8982.0398.5382.27148.97257.32224.41225.74103.65103.26222.02103.2895.5394.47105.6397.18351.7040.7740.9738.7348.43112.29251.24251.8546.2339.99251.3642.6016.6941.5531.3823.70103.1981.7398.1381.47146.92247.92233.45234.67101.30101.08234.02101.3394.6795.40106.80110.65104.7171.2393.4770.73147.73125.75222.63227.33101.64102.32226.18102.0994.6094.03106.10102.69103.8880.5796.4078.33146.17182.42239.02237.69101.84101.81237.06101.4695.9796.01106.92105.73OpenBenchmarking.org

Flexible IO Tester

OpenBenchmarking.orgSeconds (Run Time), Fewer Is BetterFlexible IO Tester 1.57Test: Intel IOMeter File Server Access PatternDefaultsnobarrierdata=journaldata=writebacknodelallocdiscard80160240320400SE +/- 0.26, N = 3SE +/- 0.04, N = 3SE +/- 0.86, N = 3SE +/- 0.08, N = 3SE +/- 0.18, N = 3SE +/- 0.60, N = 3102.98102.89351.70103.19104.71103.88
OpenBenchmarking.orgSeconds (Run Time), Fewer Is BetterFlexible IO Tester 1.57Test: Intel IOMeter File Server Access PatternDefaultsnobarrierdata=journaldata=writebacknodelallocdiscard60120180240300Min: 102.46 / Avg: 102.98 / Max: 103.29Min: 102.82 / Avg: 102.89 / Max: 102.97Min: 349.98 / Avg: 351.7 / Max: 352.72Min: 103.06 / Avg: 103.19 / Max: 103.34Min: 104.43 / Avg: 104.71 / Max: 105.05Min: 102.68 / Avg: 103.88 / Max: 104.56

FS-Mark

OpenBenchmarking.orgFiles/s, More Is BetterFS-Mark 3.3Test: 1000 Files, 1MB SizeDefaultsnobarrierdata=journaldata=writebacknodelallocdiscard20406080100SE +/- 1.19, N = 3SE +/- 1.04, N = 3SE +/- 0.37, N = 3SE +/- 0.85, N = 3SE +/- 0.47, N = 3SE +/- 0.97, N = 381.1382.0340.7781.7371.2380.571. (CC) gcc options: -static
OpenBenchmarking.orgFiles/s, More Is BetterFS-Mark 3.3Test: 1000 Files, 1MB SizeDefaultsnobarrierdata=journaldata=writebacknodelallocdiscard1632486480Min: 79.4 / Avg: 81.13 / Max: 83.4Min: 80.8 / Avg: 82.03 / Max: 84.1Min: 40.3 / Avg: 40.77 / Max: 41.5Min: 80.6 / Avg: 81.73 / Max: 83.4Min: 70.3 / Avg: 71.23 / Max: 71.7Min: 79.1 / Avg: 80.57 / Max: 82.41. (CC) gcc options: -static

OpenBenchmarking.orgFiles/s, More Is BetterFS-Mark 3.3Test: 5000 Files, 1MB Size, 4 ThreadsDefaultsnobarrierdata=journaldata=writebacknodelallocdiscard20406080100SE +/- 0.13, N = 3SE +/- 0.13, N = 3SE +/- 0.12, N = 3SE +/- 0.13, N = 3SE +/- 0.74, N = 3SE +/- 0.80, N = 397.4798.5340.9798.1393.4796.401. (CC) gcc options: -static
OpenBenchmarking.orgFiles/s, More Is BetterFS-Mark 3.3Test: 5000 Files, 1MB Size, 4 ThreadsDefaultsnobarrierdata=journaldata=writebacknodelallocdiscard20406080100Min: 97.2 / Avg: 97.47 / Max: 97.6Min: 98.4 / Avg: 98.53 / Max: 98.8Min: 40.8 / Avg: 40.97 / Max: 41.2Min: 98 / Avg: 98.13 / Max: 98.4Min: 92 / Avg: 93.47 / Max: 94.4Min: 95.6 / Avg: 96.4 / Max: 981. (CC) gcc options: -static

OpenBenchmarking.orgFiles/s, More Is BetterFS-Mark 3.3Test: 4000 Files, 32 Sub Dirs, 1MB SizeDefaultsnobarrierdata=journaldata=writebacknodelallocdiscard20406080100SE +/- 0.00, N = 3SE +/- 0.09, N = 3SE +/- 0.47, N = 3SE +/- 0.09, N = 3SE +/- 0.03, N = 3SE +/- 1.24, N = 480.9082.2738.7381.4770.7378.331. (CC) gcc options: -static
OpenBenchmarking.orgFiles/s, More Is BetterFS-Mark 3.3Test: 4000 Files, 32 Sub Dirs, 1MB SizeDefaultsnobarrierdata=journaldata=writebacknodelallocdiscard1632486480Min: 80.9 / Avg: 80.9 / Max: 80.9Min: 82.1 / Avg: 82.27 / Max: 82.4Min: 37.8 / Avg: 38.73 / Max: 39.2Min: 81.3 / Avg: 81.47 / Max: 81.6Min: 70.7 / Avg: 70.73 / Max: 70.8Min: 74.6 / Avg: 78.33 / Max: 79.71. (CC) gcc options: -static

OpenBenchmarking.orgFiles/s, More Is BetterFS-Mark 3.3Test: 1000 Files, 1MB Size, No Sync/FSyncDefaultsnobarrierdata=journaldata=writebacknodelallocdiscard306090120150SE +/- 1.82, N = 3SE +/- 1.87, N = 3SE +/- 0.03, N = 3SE +/- 2.15, N = 5SE +/- 0.27, N = 3SE +/- 1.11, N = 3146.70148.9748.43146.92147.73146.171. (CC) gcc options: -static
OpenBenchmarking.orgFiles/s, More Is BetterFS-Mark 3.3Test: 1000 Files, 1MB Size, No Sync/FSyncDefaultsnobarrierdata=journaldata=writebacknodelallocdiscard306090120150Min: 143.6 / Avg: 146.7 / Max: 149.9Min: 145.5 / Avg: 148.97 / Max: 151.9Min: 48.4 / Avg: 48.43 / Max: 48.5Min: 142.1 / Avg: 146.92 / Max: 153.8Min: 147.2 / Avg: 147.73 / Max: 148.1Min: 144.4 / Avg: 146.17 / Max: 148.21. (CC) gcc options: -static

Dbench

Dbench is a benchmark designed by the Samba project as a free alternative to netbench, but dbench contains only file-system calls for testing the disk performance. Learn more via the OpenBenchmarking.org test page.

OpenBenchmarking.orgMB/s, More Is BetterDbench 4.0Client Count: 1Defaultsnobarrierdata=journaldata=writebacknodelallocdiscard60120180240300SE +/- 1.72, N = 3SE +/- 2.57, N = 3SE +/- 0.18, N = 3SE +/- 3.16, N = 3SE +/- 0.11, N = 3SE +/- 0.47, N = 3243.27257.32112.29247.92125.75182.421. (CC) gcc options: -lpopt
OpenBenchmarking.orgMB/s, More Is BetterDbench 4.0Client Count: 1Defaultsnobarrierdata=journaldata=writebacknodelallocdiscard50100150200250Min: 239.83 / Avg: 243.27 / Max: 245.02Min: 252.83 / Avg: 257.32 / Max: 261.73Min: 112.07 / Avg: 112.29 / Max: 112.65Min: 242.54 / Avg: 247.92 / Max: 253.48Min: 125.54 / Avg: 125.75 / Max: 125.92Min: 181.57 / Avg: 182.42 / Max: 183.21. (CC) gcc options: -lpopt

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 3.405Record Size: 1MB - File Size: 8GB - Disk Test: Read PerformanceDefaultsnobarrierdata=journaldata=writebacknodelallocdiscard50100150200250SE +/- 3.72, N = 3SE +/- 1.63, N = 3SE +/- 0.06, N = 3SE +/- 1.13, N = 3SE +/- 3.49, N = 4SE +/- 1.19, N = 3194.91224.41251.24233.45222.63239.021. (CC) gcc options: -O3
OpenBenchmarking.orgMB/s, More Is BetterIOzone 3.405Record Size: 1MB - File Size: 8GB - Disk Test: Read PerformanceDefaultsnobarrierdata=journaldata=writebacknodelallocdiscard50100150200250Min: 188.97 / Avg: 194.91 / Max: 201.76Min: 221.67 / Avg: 224.41 / Max: 227.29Min: 251.17 / Avg: 251.24 / Max: 251.35Min: 232.03 / Avg: 233.45 / Max: 235.69Min: 213.4 / Avg: 222.63 / Max: 229.86Min: 237.3 / Avg: 239.02 / Max: 241.31. (CC) gcc options: -O3

OpenBenchmarking.orgMB/s, More Is BetterIOzone 3.405Record Size: 4Kb - File Size: 8GB - Disk Test: Read PerformanceDefaultsnobarrierdata=journaldata=writebacknodelallocdiscard60120180240300SE +/- 1.33, N = 3SE +/- 1.20, N = 3SE +/- 0.07, N = 3SE +/- 0.86, N = 3SE +/- 0.38, N = 3SE +/- 1.98, N = 3204.51225.74251.85234.67227.33237.691. (CC) gcc options: -O3
OpenBenchmarking.orgMB/s, More Is BetterIOzone 3.405Record Size: 4Kb - File Size: 8GB - Disk Test: Read PerformanceDefaultsnobarrierdata=journaldata=writebacknodelallocdiscard50100150200250Min: 202.29 / Avg: 204.51 / Max: 206.9Min: 224.12 / Avg: 225.74 / Max: 228.1Min: 251.76 / Avg: 251.85 / Max: 251.99Min: 233.12 / Avg: 234.67 / Max: 236.08Min: 226.57 / Avg: 227.33 / Max: 227.77Min: 235.04 / Avg: 237.69 / Max: 241.561. (CC) gcc options: -O3

OpenBenchmarking.orgMB/s, More Is BetterIOzone 3.405Record Size: 1MB - File Size: 8GB - Disk Test: Write PerformanceDefaultsnobarrierdata=journaldata=writebacknodelallocdiscard20406080100SE +/- 0.26, N = 3SE +/- 0.67, N = 3SE +/- 0.29, N = 3SE +/- 0.17, N = 3SE +/- 0.22, N = 3SE +/- 0.20, N = 399.63103.6546.23101.30101.64101.841. (CC) gcc options: -O3
OpenBenchmarking.orgMB/s, More Is BetterIOzone 3.405Record Size: 1MB - File Size: 8GB - Disk Test: Write PerformanceDefaultsnobarrierdata=journaldata=writebacknodelallocdiscard20406080100Min: 99.15 / Avg: 99.63 / Max: 100.02Min: 102.39 / Avg: 103.65 / Max: 104.69Min: 45.75 / Avg: 46.23 / Max: 46.76Min: 101.1 / Avg: 101.3 / Max: 101.64Min: 101.27 / Avg: 101.64 / Max: 102.02Min: 101.54 / Avg: 101.84 / Max: 102.231. (CC) gcc options: -O3

OpenBenchmarking.orgMB/s, More Is BetterIOzone 3.405Record Size: 4Kb - File Size: 8GB - Disk Test: Write PerformanceDefaultsnobarrierdata=journaldata=writebacknodelallocdiscard20406080100SE +/- 0.42, N = 3SE +/- 0.32, N = 3SE +/- 1.99, N = 6SE +/- 0.07, N = 3SE +/- 0.49, N = 3SE +/- 0.27, N = 399.73103.2639.99101.08102.32101.811. (CC) gcc options: -O3
OpenBenchmarking.orgMB/s, More Is BetterIOzone 3.405Record Size: 4Kb - File Size: 8GB - Disk Test: Write PerformanceDefaultsnobarrierdata=journaldata=writebacknodelallocdiscard20406080100Min: 98.94 / Avg: 99.73 / Max: 100.34Min: 102.91 / Avg: 103.26 / Max: 103.9Min: 31.24 / Avg: 39.99 / Max: 43.28Min: 100.95 / Avg: 101.08 / Max: 101.19Min: 101.82 / Avg: 102.32 / Max: 103.29Min: 101.33 / Avg: 101.81 / Max: 102.241. (CC) gcc options: -O3

OpenBenchmarking.orgMB/s, More Is BetterIOzone 3.405Record Size: 64Kb - File Size: 8GB - Disk Test: Read PerformanceDefaultsnobarrierdata=journaldata=writebacknodelallocdiscard50100150200250SE +/- 13.59, N = 6SE +/- 1.88, N = 3SE +/- 0.11, N = 3SE +/- 0.65, N = 3SE +/- 0.24, N = 3SE +/- 1.71, N = 3215.91222.02251.36234.02226.18237.061. (CC) gcc options: -O3
OpenBenchmarking.orgMB/s, More Is BetterIOzone 3.405Record Size: 64Kb - File Size: 8GB - Disk Test: Read PerformanceDefaultsnobarrierdata=journaldata=writebacknodelallocdiscard50100150200250Min: 152.44 / Avg: 215.91 / Max: 235.88Min: 218.28 / Avg: 222.02 / Max: 224.22Min: 251.19 / Avg: 251.36 / Max: 251.58Min: 232.82 / Avg: 234.02 / Max: 235.06Min: 225.72 / Avg: 226.18 / Max: 226.51Min: 234.94 / Avg: 237.06 / Max: 240.431. (CC) gcc options: -O3

OpenBenchmarking.orgMB/s, More Is BetterIOzone 3.405Record Size: 64Kb - File Size: 8GB - Disk Test: Write PerformanceDefaultsnobarrierdata=journaldata=writebacknodelallocdiscard20406080100SE +/- 0.31, N = 3SE +/- 0.57, N = 3SE +/- 0.59, N = 3SE +/- 0.09, N = 3SE +/- 0.12, N = 3SE +/- 0.25, N = 3101.14103.2842.60101.33102.09101.461. (CC) gcc options: -O3
OpenBenchmarking.orgMB/s, More Is BetterIOzone 3.405Record Size: 64Kb - File Size: 8GB - Disk Test: Write PerformanceDefaultsnobarrierdata=journaldata=writebacknodelallocdiscard20406080100Min: 100.58 / Avg: 101.14 / Max: 101.63Min: 102.61 / Avg: 103.28 / Max: 104.41Min: 41.42 / Avg: 42.6 / Max: 43.27Min: 101.21 / Avg: 101.33 / Max: 101.5Min: 101.9 / Avg: 102.09 / Max: 102.3Min: 101.14 / Avg: 101.46 / Max: 101.961. (CC) gcc options: -O3

Threaded I/O Tester

OpenBenchmarking.orgMB/s, More Is BetterThreaded I/O Tester 0.3.3Test: Random Write - Size Per Thread: 64MB - Thread Count: 4Defaultsnobarrierdata=journaldata=writebacknodelallocdiscard20406080100SE +/- 0.57, N = 4SE +/- 0.70, N = 4SE +/- 3.71, N = 8SE +/- 0.62, N = 4SE +/- 0.20, N = 4SE +/- 1.01, N = 495.3895.5316.6994.6794.6095.97
OpenBenchmarking.orgMB/s, More Is BetterThreaded I/O Tester 0.3.3Test: Random Write - Size Per Thread: 64MB - Thread Count: 4Defaultsnobarrierdata=journaldata=writebacknodelallocdiscard20406080100Min: 94.22 / Avg: 95.38 / Max: 96.7Min: 93.83 / Avg: 95.53 / Max: 97.27Min: 8.8 / Avg: 16.69 / Max: 41.54Min: 93.83 / Avg: 94.67 / Max: 96.52Min: 94.21 / Avg: 94.6 / Max: 95.07Min: 92.97 / Avg: 95.97 / Max: 97.23

OpenBenchmarking.orgMB/s, More Is BetterThreaded I/O Tester 0.3.3Test: Random Write - Size Per Thread: 64MB - Thread Count: 8Defaultsnobarrierdata=journaldata=writebacknodelallocdiscard20406080100SE +/- 0.19, N = 4SE +/- 0.77, N = 4SE +/- 6.11, N = 8SE +/- 0.16, N = 4SE +/- 1.23, N = 6SE +/- 0.31, N = 495.9194.4741.5595.4094.0396.01
OpenBenchmarking.orgMB/s, More Is BetterThreaded I/O Tester 0.3.3Test: Random Write - Size Per Thread: 64MB - Thread Count: 8Defaultsnobarrierdata=journaldata=writebacknodelallocdiscard20406080100Min: 95.38 / Avg: 95.91 / Max: 96.21Min: 92.17 / Avg: 94.47 / Max: 95.35Min: 24.79 / Avg: 41.55 / Max: 62.97Min: 95.11 / Avg: 95.4 / Max: 95.72Min: 87.92 / Avg: 94.03 / Max: 95.98Min: 95.43 / Avg: 96.01 / Max: 96.79

Compile Bench

OpenBenchmarking.orgMB/s, More Is BetterCompile Bench 0.6Test: CompileDefaultsnobarrierdata=journaldata=writebacknodelallocdiscard20406080100SE +/- 1.18, N = 3SE +/- 1.15, N = 3SE +/- 0.26, N = 3SE +/- 0.94, N = 3SE +/- 0.59, N = 3SE +/- 1.52, N = 3104.02105.6331.38106.80106.10106.92
OpenBenchmarking.orgMB/s, More Is BetterCompile Bench 0.6Test: CompileDefaultsnobarrierdata=journaldata=writebacknodelallocdiscard20406080100Min: 102.73 / Avg: 104.02 / Max: 106.38Min: 103.64 / Avg: 105.63 / Max: 107.62Min: 30.95 / Avg: 31.38 / Max: 31.86Min: 105.03 / Avg: 106.8 / Max: 108.23Min: 105.23 / Avg: 106.1 / Max: 107.22Min: 103.89 / Avg: 106.92 / Max: 108.46

OpenBenchmarking.orgMB/s, More Is BetterCompile Bench 0.6Test: Initial CreateDefaultsnobarrierdata=journaldata=writebacknodelallocdiscard20406080100SE +/- 0.70, N = 3SE +/- 1.96, N = 3SE +/- 0.74, N = 3SE +/- 3.47, N = 3SE +/- 3.59, N = 3SE +/- 3.82, N = 396.3397.1823.70110.65102.69105.73
OpenBenchmarking.orgMB/s, More Is BetterCompile Bench 0.6Test: Initial CreateDefaultsnobarrierdata=journaldata=writebacknodelallocdiscard20406080100Min: 95.44 / Avg: 96.33 / Max: 97.7Min: 94.91 / Avg: 97.18 / Max: 101.08Min: 22.5 / Avg: 23.7 / Max: 25.04Min: 106.24 / Avg: 110.65 / Max: 117.5Min: 97.61 / Avg: 102.69 / Max: 109.62Min: 98.93 / Avg: 105.73 / Max: 112.14

Defaults

Compiler Notes: --build=x86_64-linux-gnu --disable-werror --enable-checking=release --enable-clocale=gnu --enable-gnu-unique-object --enable-languages=c,c++,go,fortran,objc,obj-c++ --enable-libstdcxx-debug --enable-libstdcxx-time=yes --enable-nls --enable-objc-gc --enable-plugin --enable-shared --enable-threads=posix --host=x86_64-linux-gnu --target=x86_64-linux-gnu --with-arch-32=i686 --with-tune=generic -v
Disk Notes: DEADLINE / data=ordered,relatime,rw
System Notes: Disk Scheduler: DEADLINE. Python 2.7.3. Compiz was running on this system.

Testing initiated at 14 November 2012 19:05 by user root.

nobarrier

Compiler Notes: --build=x86_64-linux-gnu --disable-werror --enable-checking=release --enable-clocale=gnu --enable-gnu-unique-object --enable-languages=c,c++,go,fortran,objc,obj-c++ --enable-libstdcxx-debug --enable-libstdcxx-time=yes --enable-nls --enable-objc-gc --enable-plugin --enable-shared --enable-threads=posix --host=x86_64-linux-gnu --target=x86_64-linux-gnu --with-arch-32=i686 --with-tune=generic -v
Disk Notes: DEADLINE / data=ordered,nobarrier,relatime,rw
System Notes: Disk Scheduler: DEADLINE. Python 2.7.3. Compiz was running on this system.

Testing initiated at 14 November 2012 21:41 by user root.

data=journal

Compiler Notes: --build=x86_64-linux-gnu --disable-werror --enable-checking=release --enable-clocale=gnu --enable-gnu-unique-object --enable-languages=c,c++,go,fortran,objc,obj-c++ --enable-libstdcxx-debug --enable-libstdcxx-time=yes --enable-nls --enable-objc-gc --enable-plugin --enable-shared --enable-threads=posix --host=x86_64-linux-gnu --target=x86_64-linux-gnu --with-arch-32=i686 --with-tune=generic -v
Disk Notes: DEADLINE / data=journal,nodelalloc,relatime,rw
System Notes: Disk Scheduler: DEADLINE. Python 2.7.3. Compiz was running on this system.

Testing initiated at 15 November 2012 08:35 by user root.

data=writeback

Compiler Notes: --build=x86_64-linux-gnu --disable-werror --enable-checking=release --enable-clocale=gnu --enable-gnu-unique-object --enable-languages=c,c++,go,fortran,objc,obj-c++ --enable-libstdcxx-debug --enable-libstdcxx-time=yes --enable-nls --enable-objc-gc --enable-plugin --enable-shared --enable-threads=posix --host=x86_64-linux-gnu --target=x86_64-linux-gnu --with-arch-32=i686 --with-tune=generic -v
Disk Notes: DEADLINE / data=writeback,relatime,rw
System Notes: Disk Scheduler: DEADLINE. Python 2.7.3. Compiz was running on this system.

Testing initiated at 15 November 2012 12:59 by user root.

nodelalloc

Compiler Notes: --build=x86_64-linux-gnu --disable-werror --enable-checking=release --enable-clocale=gnu --enable-gnu-unique-object --enable-languages=c,c++,go,fortran,objc,obj-c++ --enable-libstdcxx-debug --enable-libstdcxx-time=yes --enable-nls --enable-objc-gc --enable-plugin --enable-shared --enable-threads=posix --host=x86_64-linux-gnu --target=x86_64-linux-gnu --with-arch-32=i686 --with-tune=generic -v
Disk Notes: DEADLINE / data=ordered,nodelalloc,relatime,rw
System Notes: Disk Scheduler: DEADLINE. Python 2.7.3. Compiz was running on this system.

Testing initiated at 15 November 2012 17:56 by user root.

discard

Processor: Intel Core i7 720Q @ 1.60GHz (8 Cores), Motherboard: LENOVO 4318CTO, Chipset: Intel Core DMI, Memory: 2 x 2048 MB DDR3-1066MHz, Disk: 160GB INTEL SSDSA2M160, Graphics: NVIDIA Quadro FX 880M 1024MB (405/324MHz), Audio: Conexant CX20585, Network: Intel 82577LM Gigabit Connection + Intel Centrino Ultimate-N 6300

OS: Ubuntu 12.10, Kernel: 3.5.0-17-generic (x86_64), Desktop: Unity 6.8.0, Display Server: X Server 1.13.0, Display Driver: nouveau 1.0.2, OpenGL: 3.0 Mesa 9.0 Gallium 0.4, Compiler: GCC 4.7, File-System: ext4, Screen Resolution: 1600x900

Compiler Notes: --build=x86_64-linux-gnu --disable-werror --enable-checking=release --enable-clocale=gnu --enable-gnu-unique-object --enable-languages=c,c++,go,fortran,objc,obj-c++ --enable-libstdcxx-debug --enable-libstdcxx-time=yes --enable-nls --enable-objc-gc --enable-plugin --enable-shared --enable-threads=posix --host=x86_64-linux-gnu --target=x86_64-linux-gnu --with-arch-32=i686 --with-tune=generic -v
Disk Notes: DEADLINE / data=ordered,discard,relatime,rw
System Notes: Disk Scheduler: DEADLINE. Python 2.7.3. Compiz was running on this system.

Testing initiated at 15 November 2012 20:21 by user root.