環境はまったく同じでOSだけ違う状態でどんなけ違いがでるのかと。
とりあえずスペック。
土台
WindowsとVMware
ホスト
Scientific 仮想2コアで仮想メモリ2G
ゲスト
CentOS6が2台、Ubuntu、Debian、FreeBSDの5個
すべて仮想1コアで512MBのメモリになってます。
まずはCentOSですが、2台はだいたい同じなので1台だけの結果を。
CentOS System Benchmarks Index Values BASELINE RESULT INDEX Dhrystone 2 using register variables 116700.0 30347264.1 2600.5 Double-Precision Whetstone 55.0 3077.3 559.5 Execl Throughput 43.0 2599.7 604.6 File Copy 1024 bufsize 2000 maxblocks 3960.0 568898.2 1436.6 File Copy 256 bufsize 500 maxblocks 1655.0 167479.1 1012.0 File Copy 4096 bufsize 8000 maxblocks 5800.0 1504475.7 2593.9 Pipe Throughput 12440.0 1307860.4 1051.3 Pipe-based Context Switching 4000.0 269530.5 673.8 Process Creation 126.0 10152.3 805.7 Shell Scripts (1 concurrent) 42.4 3770.2 889.2 Shell Scripts (8 concurrent) 6.0 500.0 833.3 System Call Overhead 15000.0 2173797.3 1449.2 ======== System Benchmarks Index Score 1060.9
Ubuntu System Benchmarks Index Values BASELINE RESULT INDEX Dhrystone 2 using register variables 116700.0 17988220.2 1541.4 Double-Precision Whetstone 55.0 3159.0 574.4 Execl Throughput 43.0 2920.5 679.2 File Copy 1024 bufsize 2000 maxblocks 3960.0 701592.4 1771.7 File Copy 256 bufsize 500 maxblocks 1655.0 192993.8 1166.1 File Copy 4096 bufsize 8000 maxblocks 5800.0 1988496.9 3428.4 Pipe Throughput 12440.0 1065991.2 856.9 Pipe-based Context Switching 4000.0 212267.2 530.7 Process Creation 126.0 13232.4 1050.2 Shell Scripts (1 concurrent) 42.4 6342.1 1495.8 Shell Scripts (8 concurrent) 6.0 772.5 1287.6 System Call Overhead 15000.0 1055229.4 703.5 ======== System Benchmarks Index Score 1088.1
Debian System Benchmarks Index Values BASELINE RESULT INDEX Dhrystone 2 using register variables 116700.0 31217899.7 2675.1 Double-Precision Whetstone 55.0 3463.5 629.7 Execl Throughput 43.0 3425.9 796.7 File Copy 1024 bufsize 2000 maxblocks 3960.0 944296.8 2384.6 File Copy 256 bufsize 500 maxblocks 1655.0 301592.9 1822.3 File Copy 4096 bufsize 8000 maxblocks 5800.0 2358039.5 4065.6 Pipe Throughput 12440.0 2472971.1 1987.9 Pipe-based Context Switching 4000.0 420606.0 1051.5 Process Creation 126.0 16915.3 1342.5 Shell Scripts (1 concurrent) 42.4 6699.9 1580.2 Shell Scripts (8 concurrent) 6.0 867.9 1446.6 System Call Overhead 15000.0 4427892.6 2951.9 ======== System Benchmarks Index Score 1663.5
FreeBSD System Benchmarks Index Values BASELINE RESULT INDEX Dhrystone 2 using register variables 116700.0 14646980.6 1255.1 Double-Precision Whetstone 55.0 2512.3 456.8 Execl Throughput 43.0 3385.7 787.4 File Copy 1024 bufsize 2000 maxblocks 3960.0 61677.3 155.8 File Copy 256 bufsize 500 maxblocks 1655.0 52468.7 317.0 File Copy 4096 bufsize 8000 maxblocks 5800.0 59239.7 102.1 Pipe Throughput 12440.0 1193677.4 959.5 Pipe-based Context Switching 4000.0 298335.6 745.8 Process Creation 126.0 6079.3 482.5 Shell Scripts (1 concurrent) 42.4 1475.5 348.0 Shell Scripts (8 concurrent) 6.0 226.5 377.6 System Call Overhead 15000.0 690754.1 460.5 ======== System Benchmarks Index Score 436.3
こんな結果で、結構な差がついてしまった。
Dhrystoneの結果を並べてみる。
CentOS 2600.5 Ubuntu 1541.4 Debian 2675.1 FreeBSD 1255.1
こんな感じです。SystemCallOverheadを並べてみる。
CentOS 1449.2 Ubuntu 703.5Debian 2951.9 FreeBSD 460.5
ファイルシステムの違いなんだろうか気もするけど。
CentOS、Ubuntu EXT4 Debian EXT3 FreeBSD UFS
この違いなんだろうか、思ってたよりも差が出てしまってどうしようという結果にｗ
完全仮想化環境だけど、Windowsの処理も関係するのか分からんので、全部同時にやってみた。
CentoS System Benchmarks Index Values BASELINE RESULT INDEX Dhrystone 2 using register variables 116700.0 12659002.9 1084.7 Double-Precision Whetstone 55.0 1556.8 283.1 Execl Throughput 43.0 1087.9 253.0 File Copy 1024 bufsize 2000 maxblocks 3960.0 295347.3 745.8 File Copy 256 bufsize 500 maxblocks 1655.0 77580.4 468.8 File Copy 4096 bufsize 8000 maxblocks 5800.0 717856.2 1237.7 Pipe Throughput 12440.0 700134.6 562.8 Pipe-based Context Switching 4000.0 144653.9 361.6 Process Creation 126.0 3994.8 317.0 Shell Scripts (1 concurrent) 42.4 1393.7 328.7 Shell Scripts (8 concurrent) 6.0 208.7 347.8 System Call Overhead 15000.0 1066391.7 710.9 ======== System Benchmarks Index Score 486.6
Ubuntu System Benchmarks Index Values BASELINE RESULT INDEX Dhrystone 2 using register variables 116700.0 7827163.9 670.7 Double-Precision Whetstone 55.0 1437.7 261.4 Execl Throughput 43.0 1115.1 259.3 File Copy 1024 bufsize 2000 maxblocks 3960.0 386896.6 977.0 File Copy 256 bufsize 500 maxblocks 1655.0 109621.0 662.4 File Copy 4096 bufsize 8000 maxblocks 5800.0 981331.0 1692.0 Pipe Throughput 12440.0 587567.8 472.3 Pipe-based Context Switching 4000.0 117532.5 293.8 Process Creation 126.0 3793.9 301.1 Shell Scripts (1 concurrent) 42.4 2228.2 525.5 Shell Scripts (8 concurrent) 6.0 323.3 538.8 System Call Overhead 15000.0 601810.6 401.2 ======== System Benchmarks Index Score 498.6
Debian System Benchmarks Index Values BASELINE RESULT INDEX Dhrystone 2 using register variables 116700.0 16456776.0 1410.2 Double-Precision Whetstone 55.0 1638.0 297.8 Execl Throughput 43.0 1338.1 311.2 File Copy 1024 bufsize 2000 maxblocks 3960.0 430225.1 1086.4 File Copy 256 bufsize 500 maxblocks 1655.0 173773.2 1050.0 File Copy 4096 bufsize 8000 maxblocks 5800.0 1000346.4 1724.7 Pipe Throughput 12440.0 1021090.3 820.8 Pipe-based Context Switching 4000.0 192593.4 481.5 Process Creation 126.0 7266.4 576.7 Shell Scripts (1 concurrent) 42.4 2616.8 617.2 Shell Scripts (8 concurrent) 6.0 291.1 485.1 System Call Overhead 15000.0 2105595.7 1403.7 ======== System Benchmarks Index Score 734.4
FreeBSD System Benchmarks Index Values BASELINE RESULT INDEX Dhrystone 2 using register variables 116700.0 6439785.8 551.8 Double-Precision Whetstone 55.0 1154.2 209.9 Execl Throughput 43.0 2052.6 477.3 File Copy 1024 bufsize 2000 maxblocks 3960.0 23130.6 58.4 File Copy 256 bufsize 500 maxblocks 1655.0 18693.9 113.0 File Copy 4096 bufsize 8000 maxblocks 5800.0 29284.6 50.5 Pipe Throughput 12440.0 587998.0 472.7 Pipe-based Context Switching 4000.0 103876.0 259.7 Process Creation 126.0 1956.9 155.3 Shell Scripts (1 concurrent) 42.4 1434.5 338.3 Shell Scripts (8 concurrent) 6.0 211.5 352.5 System Call Overhead 15000.0 682205.2 454.8 ======== System Benchmarks Index Score 227.3
順位は変わらず、数値の関係もだいたい同じだった。
となるとCentOSとUbuntuをEXT3で作るとどうなるのかってことだけど、それはまた次回やろう。
ちなみにホストOSの負荷はロードアベレージのMAXで4～5の間くらいでした。
