Btrfs Old System

Benchmarking EXT4 and Btrfs on an old Pentium laptop. Then comparing various mount options of Btrfs. Comparison for a future article on Phoronix in September 2011.

Compare your own system(s) to this result file with the Phoronix Test Suite by running the command: phoronix-test-suite benchmark 1109031-LI-BTRFSOLDS83
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EXT4
September 03 2011
 
Btrfs
August 31 2011
 
Btrfs - compress=zlib
August 31 2011
 
Btrfs - compress=lzo
September 01 2011
 
Btrfs - space_cache
September 01 2011
 
Btrfs - autodefrag
September 01 2011
 
Btrfs - nodatasum
September 02 2011
 
Btrfs - nodatacow
September 02 2011
 
Btrfs - nobarrier
September 02 2011
 
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EXT4

Processor: Intel T2400 @ 1.83GHz (2 Cores), Motherboard: LENOVO 2613EJU, Chipset: Intel Mobile 945GM/PM/GMS + ICH7-M, Memory: 1024MB, Disk: 80GB Hitachi HTS541080G9SA00, Graphics: ATI Radeon Mobility X1400, Audio: Analog Devices AD1981, Network: Intel 82573L Gigabit + Intel PRO/Wireless

OS: Ubuntu 11.10, Kernel: 3.1.0-999-generic (i686), Desktop: Unity 4.10.2, Display Server: X Server 1.10.2.902 (1.10.3 RC 2), Display Driver: radeon 6.14.99, Compiler: GCC 4.6.1, File-System: ext4, Screen Resolution: 1400x1050

System Notes: Disk Scheduler: CFQ. Compiz was running on this system. Intel SpeedStep was enabled.

Btrfs

Btrfs - compress=zlib

Btrfs - compress=lzo

Btrfs - space_cache

Btrfs - autodefrag

Btrfs - nodatasum

Btrfs - nodatacow

Btrfs - nobarrier

OS: Ubuntu 11.10, Kernel: 3.1.0-999-generic (i686), Desktop: Unity 4.10.2, Display Server: X Server 1.10.2.902 (1.10.3 RC 2), Display Driver: radeon 6.14.99, Compiler: GCC 4.6.1, File-System: btrfs, Screen Resolution: 1400x1050

Btrfs Old SystemOpenBenchmarking.orgPhoronix Test SuiteIntel T2400 @ 1.83GHz (2 Cores)LENOVO 2613EJUIntel Mobile 945GM/PM/GMS + ICH7-M1024MB80GB Hitachi HTS541080G9SA00ATI Radeon Mobility X1400Analog Devices AD1981Intel 82573L Gigabit + Intel PRO/WirelessUbuntu 11.103.1.0-999-generic (i686)Unity 4.10.2X Server 1.10.2.902 (1.10.3 RC 2)radeon 6.14.99GCC 4.6.1ext4btrfs1400x1050ProcessorMotherboardChipsetMemoryDiskGraphicsAudioNetworkOSKernelDesktopDisplay ServerDisplay DriverCompilerFile-SystemsScreen ResolutionBtrfs Old System BenchmarksSystem Logs- Disk Scheduler: CFQ. Compiz was running on this system. Intel SpeedStep was enabled.

EXT4BtrfsBtrfs - compress=zlibBtrfs - compress=lzoBtrfs - space_cacheBtrfs - autodefragBtrfs - nodatasumBtrfs - nodatacowBtrfs - nobarrierResult OverviewPhoronix Test Suite100%299%499%698%897%FS-MarkSQLiteIOzoneIOzonePostgreSQL pgbenchDbenchFS-MarkFS-MarkFS-MarkPostMark1.F.1.S.N.S.FD.T.D64Kb - 2GB - Read Performance64Kb - 2GB - Write PerformanceT.B.T.P.S65.F.1.S.4.T1.F.1.S4.F.3.S.D.1.SD.T.P

Btrfs Old Systempgbench: TPC-B Transactions Per Secondsqlite: Default Test Directorypostmark: Disk Transaction Performancefs-mark: 1000 Files, 1MB Sizefs-mark: 1000 Files, 1MB Size, No Sync/FSyncfs-mark: 5000 Files, 1MB Size, 4 Threadsfs-mark: 4000 Files, 32 Sub Dirs, 1MB Sizedbench: 6iozone: 64Kb - 2GB - Write Performanceiozone: 64Kb - 2GB - Read PerformanceEXT4BtrfsBtrfs - compress=zlibBtrfs - compress=lzoBtrfs - space_cacheBtrfs - autodefragBtrfs - nodatasumBtrfs - nodatacowBtrfs - nobarrier82.60970.839011.0021.7316.4311.2820.0426.0525.3218.681484.2910310.9328.5713.2010.6728.1628.5126.3718.261480.008715.1373.1726.4715.1030.4470.85167.2218.301462.1012017.87194.9329.4017.0331.20189.30187.4317.871477.8110210.9328.8013.0710.7023.3128.5727.3518.541459.9012010.8027.8713.2010.7727.8328.5327.3918.331471.3711411.5028.671411.4724.6128.7227.4119.811568.7811311.4029.071411.4324.6228.8228.0482.61205.3310518.5728.9717.2018.2368.8928.2726.88OpenBenchmarking.org

PostgreSQL pgbench

OpenBenchmarking.orgTPS, More Is BetterPostgreSQL pgbench 9.0.4TPC-B Transactions Per SecondEXT4BtrfsBtrfs - compress=zlibBtrfs - compress=lzoBtrfs - space_cacheBtrfs - autodefragBtrfs - nodatasumBtrfs - nodatacowBtrfs - nobarrier20406080100SE +/- 0.37, N = 3SE +/- 0.03, N = 3SE +/- 0.07, N = 3SE +/- 0.09, N = 3SE +/- 0.27, N = 3SE +/- 0.09, N = 3SE +/- 0.10, N = 3SE +/- 0.21, N = 3SE +/- 1.43, N = 682.6018.6818.2618.3017.8718.5418.3319.8182.61
OpenBenchmarking.orgTPS, More Is BetterPostgreSQL pgbench 9.0.4TPC-B Transactions Per SecondEXT4BtrfsBtrfs - compress=zlibBtrfs - compress=lzoBtrfs - space_cacheBtrfs - autodefragBtrfs - nodatasumBtrfs - nodatacowBtrfs - nobarrier1632486480Min: 81.86 / Avg: 82.6 / Max: 83.03Min: 18.64 / Avg: 18.68 / Max: 18.75Min: 18.14 / Avg: 18.26 / Max: 18.37Min: 18.14 / Avg: 18.3 / Max: 18.46Min: 17.32 / Avg: 17.87 / Max: 18.16Min: 18.37 / Avg: 18.54 / Max: 18.63Min: 18.13 / Avg: 18.33 / Max: 18.46Min: 19.39 / Avg: 19.81 / Max: 20.03Min: 76.47 / Avg: 82.61 / Max: 86.38

SQLite

OpenBenchmarking.orgSeconds, Fewer Is BetterSQLite 3.7.3Test Target: Default Test DirectoryEXT4BtrfsBtrfs - compress=zlibBtrfs - compress=lzoBtrfs - space_cacheBtrfs - autodefragBtrfs - nodatasumBtrfs - nodatacowBtrfs - nobarrier30060090012001500SE +/- 8.73, N = 3SE +/- 1.55, N = 3SE +/- 1.81, N = 3SE +/- 0.76, N = 3SE +/- 2.77, N = 3SE +/- 1.73, N = 3SE +/- 0.81, N = 3SE +/- 31.23, N = 3SE +/- 0.84, N = 3970.831484.291480.001462.101477.811459.901471.371568.78205.33
OpenBenchmarking.orgSeconds, Fewer Is BetterSQLite 3.7.3Test Target: Default Test DirectoryEXT4BtrfsBtrfs - compress=zlibBtrfs - compress=lzoBtrfs - space_cacheBtrfs - autodefragBtrfs - nodatasumBtrfs - nodatacowBtrfs - nobarrier30060090012001500Min: 954.32 / Avg: 970.83 / Max: 984.02Min: 1482.65 / Avg: 1484.29 / Max: 1487.38Min: 1477.36 / Avg: 1480 / Max: 1483.45Min: 1461.08 / Avg: 1462.1 / Max: 1463.58Min: 1474.93 / Avg: 1477.81 / Max: 1483.35Min: 1456.51 / Avg: 1459.9 / Max: 1462.23Min: 1469.95 / Avg: 1471.37 / Max: 1472.75Min: 1520.38 / Avg: 1568.78 / Max: 1627.16Min: 203.84 / Avg: 205.33 / Max: 206.76

PostMark

OpenBenchmarking.orgTPS, More Is BetterPostMark 1.51Disk Transaction PerformanceEXT4BtrfsBtrfs - compress=zlibBtrfs - compress=lzoBtrfs - space_cacheBtrfs - autodefragBtrfs - nodatasumBtrfs - nodatacowBtrfs - nobarrier306090120150SE +/- 0.32, N = 5SE +/- 1.12, N = 5SE +/- 0.00, N = 5SE +/- 1.29, N = 5SE +/- 0.68, N = 5SE +/- 1.50, N = 5SE +/- 0.37, N = 5SE +/- 0.49, N = 5SE +/- 0.49, N = 59010387120102120114113105
OpenBenchmarking.orgTPS, More Is BetterPostMark 1.51Disk Transaction PerformanceEXT4BtrfsBtrfs - compress=zlibBtrfs - compress=lzoBtrfs - space_cacheBtrfs - autodefragBtrfs - nodatasumBtrfs - nodatacowBtrfs - nobarrier20406080100Min: 89 / Avg: 90 / Max: 91Min: 101 / Avg: 102.6 / Max: 107Min: 87 / Avg: 87 / Max: 87Min: 116 / Avg: 119.6 / Max: 124Min: 101 / Avg: 102.4 / Max: 105Min: 116 / Avg: 119.6 / Max: 124Min: 113 / Avg: 113.8 / Max: 115Min: 112 / Avg: 113.2 / Max: 115Min: 104 / Avg: 105.2 / Max: 107

FS-Mark

OpenBenchmarking.orgFiles/s, More Is BetterFS-Mark 3.3Test: 1000 Files, 1MB SizeEXT4BtrfsBtrfs - compress=zlibBtrfs - compress=lzoBtrfs - space_cacheBtrfs - autodefragBtrfs - nodatasumBtrfs - nodatacowBtrfs - nobarrier510152025SE +/- 0.06, N = 3SE +/- 0.07, N = 3SE +/- 0.09, N = 3SE +/- 0.03, N = 3SE +/- 0.03, N = 3SE +/- 0.06, N = 3SE +/- 0.06, N = 3SE +/- 0.21, N = 3SE +/- 0.07, N = 311.0010.9315.1317.8710.9310.8011.5011.4018.57
OpenBenchmarking.orgFiles/s, More Is BetterFS-Mark 3.3Test: 1000 Files, 1MB SizeEXT4BtrfsBtrfs - compress=zlibBtrfs - compress=lzoBtrfs - space_cacheBtrfs - autodefragBtrfs - nodatasumBtrfs - nodatacowBtrfs - nobarrier510152025Min: 10.9 / Avg: 11 / Max: 11.1Min: 10.8 / Avg: 10.93 / Max: 11Min: 15 / Avg: 15.13 / Max: 15.3Min: 17.8 / Avg: 17.87 / Max: 17.9Min: 10.9 / Avg: 10.93 / Max: 11Min: 10.7 / Avg: 10.8 / Max: 10.9Min: 11.4 / Avg: 11.5 / Max: 11.6Min: 11.1 / Avg: 11.4 / Max: 11.8Min: 18.5 / Avg: 18.57 / Max: 18.7

OpenBenchmarking.orgFiles/s, More Is BetterFS-Mark 3.3Test: 1000 Files, 1MB Size, No Sync/FSyncEXT4BtrfsBtrfs - compress=zlibBtrfs - compress=lzoBtrfs - space_cacheBtrfs - autodefragBtrfs - nodatasumBtrfs - nodatacowBtrfs - nobarrier4080120160200SE +/- 0.29, N = 3SE +/- 0.32, N = 3SE +/- 0.64, N = 3SE +/- 4.94, N = 6SE +/- 0.25, N = 3SE +/- 0.44, N = 3SE +/- 0.07, N = 3SE +/- 0.32, N = 3SE +/- 0.03, N = 321.7328.5773.17194.9328.8027.8728.6729.0728.97
OpenBenchmarking.orgFiles/s, More Is BetterFS-Mark 3.3Test: 1000 Files, 1MB Size, No Sync/FSyncEXT4BtrfsBtrfs - compress=zlibBtrfs - compress=lzoBtrfs - space_cacheBtrfs - autodefragBtrfs - nodatasumBtrfs - nodatacowBtrfs - nobarrier4080120160200Min: 21.2 / Avg: 21.73 / Max: 22.2Min: 28 / Avg: 28.57 / Max: 29.1Min: 71.9 / Avg: 73.17 / Max: 74Min: 174.7 / Avg: 194.93 / Max: 207.4Min: 28.3 / Avg: 28.8 / Max: 29.1Min: 27.2 / Avg: 27.87 / Max: 28.7Min: 28.6 / Avg: 28.67 / Max: 28.8Min: 28.7 / Avg: 29.07 / Max: 29.7Min: 28.9 / Avg: 28.97 / Max: 29

OpenBenchmarking.orgFiles/s, More Is BetterFS-Mark 3.3Test: 5000 Files, 1MB Size, 4 ThreadsEXT4BtrfsBtrfs - compress=zlibBtrfs - compress=lzoBtrfs - space_cacheBtrfs - autodefragBtrfs - nodatasumBtrfs - nodatacowBtrfs - nobarrier714212835SE +/- 0.26, N = 3SE +/- 0.00, N = 3SE +/- 0.41, N = 3SE +/- 0.12, N = 3SE +/- 0.13, N = 3SE +/- 0.00, N = 3SE +/- 0.00, N = 3SE +/- 0.00, N = 3SE +/- 0.00, N = 316.4313.2026.4729.4013.0713.2014.0014.0017.20
OpenBenchmarking.orgFiles/s, More Is BetterFS-Mark 3.3Test: 5000 Files, 1MB Size, 4 ThreadsEXT4BtrfsBtrfs - compress=zlibBtrfs - compress=lzoBtrfs - space_cacheBtrfs - autodefragBtrfs - nodatasumBtrfs - nodatacowBtrfs - nobarrier714212835Min: 16 / Avg: 16.43 / Max: 16.9Min: 13.2 / Avg: 13.2 / Max: 13.2Min: 25.8 / Avg: 26.47 / Max: 27.2Min: 29.2 / Avg: 29.4 / Max: 29.6Min: 12.8 / Avg: 13.07 / Max: 13.2Min: 13.2 / Avg: 13.2 / Max: 13.2Min: 14 / Avg: 14 / Max: 14Min: 14 / Avg: 14 / Max: 14Min: 17.2 / Avg: 17.2 / Max: 17.2

OpenBenchmarking.orgFiles/s, More Is BetterFS-Mark 3.3Test: 4000 Files, 32 Sub Dirs, 1MB SizeEXT4BtrfsBtrfs - compress=zlibBtrfs - compress=lzoBtrfs - space_cacheBtrfs - autodefragBtrfs - nodatasumBtrfs - nodatacowBtrfs - nobarrier48121620SE +/- 0.38, N = 6SE +/- 0.03, N = 3SE +/- 0.06, N = 3SE +/- 0.03, N = 3SE +/- 0.00, N = 3SE +/- 0.03, N = 3SE +/- 0.03, N = 3SE +/- 0.03, N = 3SE +/- 0.03, N = 311.2810.6715.1017.0310.7010.7711.4711.4318.23
OpenBenchmarking.orgFiles/s, More Is BetterFS-Mark 3.3Test: 4000 Files, 32 Sub Dirs, 1MB SizeEXT4BtrfsBtrfs - compress=zlibBtrfs - compress=lzoBtrfs - space_cacheBtrfs - autodefragBtrfs - nodatasumBtrfs - nodatacowBtrfs - nobarrier510152025Min: 10.3 / Avg: 11.28 / Max: 12.4Min: 10.6 / Avg: 10.67 / Max: 10.7Min: 15 / Avg: 15.1 / Max: 15.2Min: 17 / Avg: 17.03 / Max: 17.1Min: 10.7 / Avg: 10.7 / Max: 10.7Min: 10.7 / Avg: 10.77 / Max: 10.8Min: 11.4 / Avg: 11.47 / Max: 11.5Min: 11.4 / Avg: 11.43 / Max: 11.5Min: 18.2 / Avg: 18.23 / Max: 18.3

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: 6EXT4BtrfsBtrfs - compress=zlibBtrfs - compress=lzoBtrfs - space_cacheBtrfs - autodefragBtrfs - nodatasumBtrfs - nodatacowBtrfs - nobarrier1530456075SE +/- 0.31, N = 3SE +/- 0.35, N = 3SE +/- 0.07, N = 3SE +/- 0.10, N = 3SE +/- 0.45, N = 3SE +/- 0.22, N = 3SE +/- 0.07, N = 3SE +/- 0.06, N = 3SE +/- 0.31, N = 320.0428.1630.4431.2023.3127.8324.6124.6268.89
OpenBenchmarking.orgMB/s, More Is BetterDbench 4.0Client Count: 6EXT4BtrfsBtrfs - compress=zlibBtrfs - compress=lzoBtrfs - space_cacheBtrfs - autodefragBtrfs - nodatasumBtrfs - nodatacowBtrfs - nobarrier1326395265Min: 19.42 / Avg: 20.04 / Max: 20.39Min: 27.48 / Avg: 28.16 / Max: 28.66Min: 30.31 / Avg: 30.44 / Max: 30.53Min: 31.02 / Avg: 31.2 / Max: 31.37Min: 22.41 / Avg: 23.31 / Max: 23.77Min: 27.51 / Avg: 27.83 / Max: 28.26Min: 24.48 / Avg: 24.61 / Max: 24.69Min: 24.53 / Avg: 24.62 / Max: 24.73Min: 68.34 / Avg: 68.89 / Max: 69.41

IOzone

OpenBenchmarking.orgMB/s, More Is BetterIOzone 3.347Record Size: 64Kb - File Size: 2GB - Disk Test: Write PerformanceEXT4BtrfsBtrfs - compress=zlibBtrfs - compress=lzoBtrfs - space_cacheBtrfs - autodefragBtrfs - nodatasumBtrfs - nodatacowBtrfs - nobarrier4080120160200SE +/- 0.23, N = 3SE +/- 0.07, N = 3SE +/- 0.11, N = 3SE +/- 2.14, N = 3SE +/- 0.11, N = 3SE +/- 0.21, N = 3SE +/- 0.10, N = 3SE +/- 0.03, N = 3SE +/- 0.09, N = 326.0528.5170.85189.3028.5728.5328.7228.8228.27
OpenBenchmarking.orgMB/s, More Is BetterIOzone 3.347Record Size: 64Kb - File Size: 2GB - Disk Test: Write PerformanceEXT4BtrfsBtrfs - compress=zlibBtrfs - compress=lzoBtrfs - space_cacheBtrfs - autodefragBtrfs - nodatasumBtrfs - nodatacowBtrfs - nobarrier306090120150Min: 25.58 / Avg: 26.05 / Max: 26.32Min: 28.44 / Avg: 28.51 / Max: 28.64Min: 70.64 / Avg: 70.85 / Max: 71.03Min: 186.61 / Avg: 189.3 / Max: 193.52Min: 28.38 / Avg: 28.57 / Max: 28.75Min: 28.12 / Avg: 28.53 / Max: 28.82Min: 28.54 / Avg: 28.72 / Max: 28.88Min: 28.77 / Avg: 28.82 / Max: 28.88Min: 28.11 / Avg: 28.27 / Max: 28.41

OpenBenchmarking.orgMB/s, More Is BetterIOzone 3.347Record Size: 64Kb - File Size: 2GB - Disk Test: Read PerformanceEXT4BtrfsBtrfs - compress=zlibBtrfs - compress=lzoBtrfs - space_cacheBtrfs - autodefragBtrfs - nodatasumBtrfs - nodatacowBtrfs - nobarrier4080120160200SE +/- 0.40, N = 3SE +/- 0.24, N = 3SE +/- 3.54, N = 6SE +/- 4.20, N = 6SE +/- 0.20, N = 3SE +/- 0.16, N = 3SE +/- 0.21, N = 3SE +/- 0.11, N = 3SE +/- 0.49, N = 325.3226.37167.22187.4327.3527.3927.4128.0426.88
OpenBenchmarking.orgMB/s, More Is BetterIOzone 3.347Record Size: 64Kb - File Size: 2GB - Disk Test: Read PerformanceEXT4BtrfsBtrfs - compress=zlibBtrfs - compress=lzoBtrfs - space_cacheBtrfs - autodefragBtrfs - nodatasumBtrfs - nodatacowBtrfs - nobarrier306090120150Min: 24.73 / Avg: 25.32 / Max: 26.08Min: 25.9 / Avg: 26.37 / Max: 26.68Min: 152.71 / Avg: 167.22 / Max: 180.01Min: 173.22 / Avg: 187.43 / Max: 200.43Min: 26.94 / Avg: 27.35 / Max: 27.58Min: 27.13 / Avg: 27.39 / Max: 27.69Min: 26.99 / Avg: 27.41 / Max: 27.66Min: 27.88 / Avg: 28.04 / Max: 28.25Min: 25.89 / Avg: 26.88 / Max: 27.42

EXT4

Processor: Intel T2400 @ 1.83GHz (2 Cores), Motherboard: LENOVO 2613EJU, Chipset: Intel Mobile 945GM/PM/GMS + ICH7-M, Memory: 1024MB, Disk: 80GB Hitachi HTS541080G9SA00, Graphics: ATI Radeon Mobility X1400, Audio: Analog Devices AD1981, Network: Intel 82573L Gigabit + Intel PRO/Wireless

OS: Ubuntu 11.10, Kernel: 3.1.0-999-generic (i686), Desktop: Unity 4.10.2, Display Server: X Server 1.10.2.902 (1.10.3 RC 2), Display Driver: radeon 6.14.99, Compiler: GCC 4.6.1, File-System: ext4, Screen Resolution: 1400x1050

System Notes: Disk Scheduler: CFQ. Compiz was running on this system. Intel SpeedStep was enabled.

Testing initiated at 3 September 2011 03:52 by user phoronix.

Btrfs

System Notes: Disk Scheduler: CFQ. Compiz was running on this system. Intel SpeedStep was enabled.

Testing initiated at 31 August 2011 11:30 by user phoronix.

Btrfs - compress=zlib

System Notes: Disk Scheduler: CFQ. Compiz was running on this system. Intel SpeedStep was enabled.

Testing initiated at 31 August 2011 18:40 by user phoronix.

Btrfs - compress=lzo

System Notes: Disk Scheduler: CFQ. Compiz was running on this system. Intel SpeedStep was enabled.

Testing initiated at 1 September 2011 01:00 by user phoronix.

Btrfs - space_cache

System Notes: Disk Scheduler: CFQ. Compiz was running on this system. Intel SpeedStep was enabled.

Testing initiated at 1 September 2011 10:57 by user phoronix.

Btrfs - autodefrag

System Notes: Disk Scheduler: CFQ. Compiz was running on this system. Intel SpeedStep was enabled.

Testing initiated at 1 September 2011 18:24 by user phoronix.

Btrfs - nodatasum

System Notes: Disk Scheduler: CFQ. Compiz was running on this system. Intel SpeedStep was enabled.

Testing initiated at 2 September 2011 01:35 by user phoronix.

Btrfs - nodatacow

System Notes: Disk Scheduler: CFQ. Compiz was running on this system. Intel SpeedStep was enabled.

Testing initiated at 2 September 2011 11:35 by user phoronix.

Btrfs - nobarrier

Processor: Intel T2400 @ 1.83GHz (2 Cores), Motherboard: LENOVO 2613EJU, Chipset: Intel Mobile 945GM/PM/GMS + ICH7-M, Memory: 1024MB, Disk: 80GB Hitachi HTS541080G9SA00, Graphics: ATI Radeon Mobility X1400, Audio: Analog Devices AD1981, Network: Intel 82573L Gigabit + Intel PRO/Wireless

OS: Ubuntu 11.10, Kernel: 3.1.0-999-generic (i686), Desktop: Unity 4.10.2, Display Server: X Server 1.10.2.902 (1.10.3 RC 2), Display Driver: radeon 6.14.99, Compiler: GCC 4.6.1, File-System: btrfs, Screen Resolution: 1400x1050

System Notes: Disk Scheduler: CFQ. Compiz was running on this system. Intel SpeedStep was enabled.

Testing initiated at 2 September 2011 18:31 by user phoronix.