まずは測定に使った機材のデータ。
MacBook Air 11inch
Results 117.74
System Info
Xbench Version 1.3
System Version 10.6.5 (10H574)
Physical RAM 2048 MB
Model MacBookAir3,1
Drive Type APPLE SSD TS064C
CPU Test 97.68
GCD Loop 163.96 8.64 Mops/sec
Floating Point Basic 79.86 1.90 Gflop/sec
vecLib FFT 63.25 2.09 Gflop/sec
Floating Point Library 153.44 26.72 Mops/sec
Thread Test 149.56
Computation 232.08 4.70 Mops/sec, 4 threads
Lock Contention 110.33 4.75 Mlocks/sec, 4 threads
Memory Test 140.21
System 145.30
Allocate 170.89 627.57 Kalloc/sec
Fill 122.45 5953.74 MB/sec
Copy 150.87 3116.20 MB/sec
Stream 135.46
Copy 128.50 2654.05 MB/sec
Scale 126.37 2610.78 MB/sec
Add 145.29 3095.00 MB/sec
Triad 143.86 3077.49 MB/sec
Quartz Graphics Test 101.25
Line 94.86 6.32 Klines/sec [50% alpha]
Rectangle 104.68 31.25 Krects/sec [50% alpha]
Circle 90.84 7.40 Kcircles/sec [50% alpha]
Bezier 108.76 2.74 Kbeziers/sec [50% alpha]
Text 110.07 6.89 Kchars/sec
OpenGL Graphics Test 81.07
Spinning Squares 81.07 102.84 frames/sec
User Interface Test 112.11
Elements 112.11 514.55 refresh/sec
Disk Test 234.36
Sequential 152.80
Uncached Write 196.71 120.78 MB/sec [4K blocks]
Uncached Write 273.51 154.75 MB/sec [256K blocks]
Uncached Read 69.45 20.33 MB/sec [4K blocks]
Uncached Read 328.96 165.33 MB/sec [256K blocks]
Random 502.70
Uncached Write 309.49 32.76 MB/sec [4K blocks]
Uncached Write 506.22 162.06 MB/sec [256K blocks]
Uncached Read 1208.33 8.56 MB/sec [4K blocks]
Uncached Read 520.06 96.50 MB/sec [256K blocks]
さすがにSSDはバカッ速い
Time Machineのバックアップに使っているHitachiのIDE2.5インチHDD/USB2.0ケースは
Results 34.13
System Info
Xbench Version 1.3
System Version 10.6.8 (10K549)
Physical RAM 2048 MB
Model MacBookAir3,1
Drive Type Hitachi HTS541612J9AT00
Disk Test 34.13
Sequential 44.58
Uncached Write 52.39 32.17 MB/sec [4K blocks]
Uncached Write 42.28 23.92 MB/sec [256K blocks]
Uncached Read 32.50 9.51 MB/sec [4K blocks]
Uncached Read 61.68 31.00 MB/sec [256K blocks]
Random 27.65
Uncached Write 10.35 1.10 MB/sec [4K blocks]
Uncached Write 54.21 17.36 MB/sec [256K blocks]
Uncached Read 62.44 0.44 MB/sec [4K blocks]
Uncached Read 73.79 13.69 MB/sec [256K blocks]
sequentialでも1/3以下、randomだと実に1/20という結果。遅っ。
次にCFカード。 GH-CF16GFX/ELECOM MR-A39HSV
Results 0.55
System Info
Xbench Version 1.3
System Version 10.6.8 (10K549)
Physical RAM 2048 MB
Model MacBookAir3,1
Drive Type USB2.0 CardReader COMBO
Disk Test 0.55
Sequential 7.21
Uncached Write 5.92 3.64 MB/sec [4K blocks]
Uncached Write 6.14 3.47 MB/sec [256K blocks]
Uncached Read 9.60 2.81 MB/sec [4K blocks]
Uncached Read 8.43 4.24 MB/sec [256K blocks]
Random 0.29
Uncached Write 0.08 0.01 MB/sec [4K blocks]
Uncached Write 0.81 0.26 MB/sec [256K blocks]
Uncached Read 238.20 1.69 MB/sec [4K blocks]
Uncached Read 19.67 3.65 MB/sec [256K blocks]
せっかくUDMA5対応、QUAD chip同時アクセスで読込み速度65MB/s、書込み速度35MB/sをうたっていてもUSBカードリーダーがUDMAに対応してないので速度が出ない。実にSSDの1/500の性能・・・だめだこりゃ。
以前このCFをSATAに変換してG5 iMacの起動ディスクにしようとしたけど相当もっさりした感じになったけどアレは変換アダプタがダメだったのか？
おまけ。
YAMADA電気で安売りしていたMUSEというブランドのUSBメモリ（高速アクセスを謳っていた）
Results 0.51
System Info
Xbench Version 1.3
System Version 10.6.8 (10K549)
Physical RAM 2048 MB
Model MacBookAir3,1
Drive Type V3.1167 MUSE
Disk Test 0.51
Sequential 4.75
Uncached Write 3.89 2.39 MB/sec [4K blocks]
Uncached Write 1.94 1.10 MB/sec [256K blocks]
Uncached Read 22.02 6.44 MB/sec [4K blocks]
Uncached Read 40.20 20.20 MB/sec [256K blocks]
Random 0.27
Uncached Write 0.07 0.01 MB/sec [4K blocks]
Uncached Write 1.23 0.39 MB/sec [256K blocks]
Uncached Read 422.53 2.99 MB/sec [4K blocks]
Uncached Read 129.92 24.11 MB/sec [256K blocks]
どこが高速？
Results 113.18
System Info
Xbench Version 1.3
System Version 10.6.8 (10K549)
Physical RAM 2048 MB
Model Macmini4,1
Drive Type TOSHIBA MK3255GSXF
CPU Test 158.03
GCD Loop 281.36 14.83 Mops/sec
Floating Point Basic 135.97 3.23 Gflop/sec
vecLib FFT 98.90 3.26 Gflop/sec
Floating Point Library 232.97 40.57 Mops/sec
Thread Test 234.74
Computation 323.62 6.56 Mops/sec, 4 threads
Lock Contention 184.16 7.92 Mlocks/sec, 4 threads
Memory Test 187.61
System 213.16
Allocate 270.48 993.29 Kalloc/sec
Fill 180.71 8786.29 MB/sec
Copy 206.49 4264.87 MB/sec
Stream 167.53
Copy 160.37 3312.30 MB/sec
Scale 157.97 3263.57 MB/sec
Add 177.21 3775.04 MB/sec
Triad 176.44 3774.47 MB/sec
Quartz Graphics Test 164.38
Line 132.37 8.81 Klines/sec [50% alpha]
Rectangle 146.98 43.88 Krects/sec [50% alpha]
Circle 143.21 11.67 Kcircles/sec [50% alpha]
Bezier 163.72 4.13 Kbeziers/sec [50% alpha]
Text 336.89 21.07 Kchars/sec
OpenGL Graphics Test 150.28
Spinning Squares 150.28 190.63 frames/sec
User Interface Test 176.87
Elements 176.87 811.74 refresh/sec
Disk Test 36.31
Sequential 76.54
Uncached Write 80.95 49.70 MB/sec [4K blocks]
Uncached Write 65.67 37.16 MB/sec [256K blocks]
Uncached Read 77.40 22.65 MB/sec [4K blocks]
Uncached Read 85.01 42.72 MB/sec [256K blocks]
Random 23.80
Uncached Write 8.09 0.86 MB/sec [4K blocks]
Uncached Write 60.46 19.35 MB/sec [256K blocks]
Uncached Read 56.68 0.40 MB/sec [4K blocks]
Uncached Read 97.54 18.10 MB/sec [256K blocks]
ディスクのスコアだけみるとUSBケースに入れたIDEディスクとあんまりかわらない。ここはやっぱりSSD入れると劇的に速くなるんだろうかね。
おまけのおまけ
USBケースに入れた3.5インチのSATAディスク（Mac miniのバックアップ用）の場合
Results 51.58
System Info
Xbench Version 1.3
System Version 10.6.8 (10K549)
Physical RAM 2048 MB
Model Macmini4,1
Drive Type WDC WD50 00AAKS-00A7B0
Disk Test 51.58
Sequential 52.25
Uncached Write 59.05 36.26 MB/sec [4K blocks]
Uncached Write 58.06 32.85 MB/sec [256K blocks]
Uncached Read 34.33 10.05 MB/sec [4K blocks]
Uncached Read 75.37 37.88 MB/sec [256K blocks]
Random 50.92
Uncached Write 19.92 2.11 MB/sec [4K blocks]
Uncached Write 107.84 34.52 MB/sec [256K blocks]
Uncached Read 96.28 0.68 MB/sec [4K blocks]
Uncached Read 114.98 21.33 MB/sec [256K blocks]
こっちを起動ディスクにした方が実は快適なんじゃないの？
