...
ディスクのストライプサイズはデフォルトの256K固定です。
1Disk-RAID0
...
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何気にAHCIよりIO性能が高い…。SSD自体に256MBのDRAMが載っているので、そもそもカード自体のDRAMが不要な可能性があります。
CDMの4G、100MBリードの参考値です。ちなみにDiskcacheを無効にするとシーケンシャルでも書き込みが45MB/s程度まで落ちました。
1Disk-RAID0 WriteBack
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5GBというキャッシュに乗り切らないサイズのせいか、違いがぜんぜんわからん!
WTモード時とのデータの向上率の比較をしてみる
Image Removed
WB SmartPath Enabled
| チャート |
|---|
| imageFormat | png |
|---|
| orientation | horizontal |
|---|
| forgive | false |
|---|
| width | 1000 |
|---|
| rangeAxisLowerBound | 0 |
|---|
| dataOrientation | vertical |
|---|
| title | P420 RAID0 1disk SmartPath Enabled IOPS |
|---|
| type | bar |
|---|
| rangeAxisUpperBound | 100000 |
|---|
| xLabel | Test Pattern |
|---|
| height | 500 |
|---|
|
| Access Specification Name | Read IOps | Write IOps |
|---|
| 512 B; 100% Read; 0% random_QD1 |
|---|
|
...
...
| 7 | 0.0 | | 512 B; 100% Read; 0% random_QD32 |
|---|
|
...
...
| 4 | 0.0 | | 512 B; 50% Read; 0% random_QD1 |
|---|
|
...
...
...
...
| 4 | | 512 B; 50% Read; 0% random_QD32 |
|---|
|
...
...
...
...
| 4 | | 512 B; 0% Read; 0% random_QD1 | 0.0 |
|---|
|
...
...
| 9 | | 512 B; 0% Read; 0% random_QD32 | 0.0 |
|---|
|
...
...
| 3 | | 4 KiB; 100% Read; 0% random_QD1 |
|---|
|
...
...
| 6 | 0.0 | | 4 KiB; 100% Read; 0% random_QD32 |
|---|
|
...
...
| 9 | 0.0 | | 4 KiB; 50% Read; 0% random_QD1 | 2146.2 | 2155.6 |
|---|
| 4 KiB; 50% Read; 0% random_QD32 | 330.5 | 338.1 |
|---|
| 4 KiB; 0% Read; 0% random_QD1 | 0.0 | 11431.8 |
|---|
| 4 KiB; 0% Read; 0% random_QD32 | 0.0 | 21268.0 |
|---|
| 256 KiB; 100% Read; 0% random_QD1 | 1399.0 | 0.0 |
|---|
| 256 KiB; 100% Read; 0% random_QD32 | 231.4 | 0.0 |
|---|
| 256 KiB; 50% Read; 0% random_QD1 | 360.8 | 361.8 |
|---|
| 256 KiB; 50% Read; 0% random_QD32 | 114.5 | 115.9 |
|---|
| 256 KiB; 0% Read; 0% random_QD1 | 0.0 | 1179.9 |
|---|
| 256 KiB; 0% Read; 0% random_QD32 | 0.0 | 229.7 |
|---|
| 1M-Seq-100%R_QD1 | 422.1 | 0. |
|---|
|
...
| 0 | | 1M-Seq-100%R_QD32 | 195.1 | 0. |
|---|
|
...
| 0 | | 1M-Seq-50%R_QD1 | 135.0 | 139.1 |
|---|
| 1M-Seq-50%R_QD32 | 88.0 | 88.6 |
|---|
| 1M-Seq-100%W_QD1 | 0.0 | 312.4 |
|---|
| 1M-Seq-100%W_QD32 | 0.0 | 180.3 |
|---|
| 1M-rand-100%R_QD1 | 327.0 | 0.0 |
|---|
| 1M-rand-100%R_QD32 | 195.6 | 0.0 |
|---|
| 1M-rand-50%R_QD1 | 136.1 | 139.0 |
|---|
| 1M-rand-50%R_QD32 | 85.6 | 90.4 |
|---|
| 1M-rand-100%W_QD1 | 0.0 | 272.6 |
|---|
| 1M-rand-100%W_QD32 | 0.0 | 174.4 |
|---|
|
| チャート |
|---|
| imageFormat | png |
|---|
| orientation | horizontal |
|---|
| forgive | false |
|---|
| width | 1000 |
|---|
| rangeAxisLowerBound | 0 |
|---|
| dataOrientation | vertical |
|---|
| title | P420 RAID0 1disk SmartPath Enabled MB/s |
|---|
| type | bar |
|---|
| rangeAxisUpperBound | 2500 |
|---|
| xLabel | Test Pattern |
|---|
| height | 500 |
|---|
|
| Access Specification Name | Read MBps (Decimal) | Write MBps (Decimal) |
|---|
| 512 B; 100% Read; 0% random_QD1 | 7.4 | 0.0 |
|---|
| 512 B; 100% Read; 0% random_QD32 | 26.0 | 0.0 |
|---|
| 512 B; 50% Read; 0% random_QD1 | 0.7 | 0.7 |
|---|
| 512 B; 50% Read; 0% random_QD32 | 0.1 | 0.1 |
|---|
| 512 B; 0% Read; 0% random_QD1 | 0.0 | 6.2 |
|---|
| 512 B; 0% Read; 0% random_QD32 | 0.0 | 0.1 |
|---|
| 4 KiB; 100% Read; 0% random_QD1 | 51.4 | 0.0 |
|---|
| 4 KiB; 100% Read; 0% random_QD32 | 72.8 | 0.0 |
|---|
| 4 KiB; 50% Read; 0% random_QD1 | 8.8 | 8.8 |
|---|
| 4 KiB; 50% Read; 0% random_QD32 | 1.4 | 1.4 |
|---|
| 4 KiB; 0% Read; 0% random_QD1 | 0.0 | 46.8 |
|---|
| 4 KiB; 0% Read; 0% random_QD32 | 0.0 | 87.1 |
|---|
| 256 KiB; 100% Read; 0% random_QD1 | 366.7 | 0.0 |
|---|
| 256 KiB; 100% Read; 0% random_QD32 | 60.7 | 0.0 |
|---|
| 256 KiB; 50% Read; 0% random_QD1 | 94.6 | 94.9 |
|---|
| 256 KiB; 50% Read; 0% random_QD32 | 30.0 | 30.4 |
|---|
| 256 KiB; 0% Read; 0% random_QD1 | 0.0 | 309.3 |
|---|
| 256 KiB; 0% Read; 0% random_QD32 | 0.0 | 60.2 |
|---|
| 1M-Seq-100%R_QD1 | 442.6 | 0.0 |
|---|
| 1M-Seq-100%R_QD32 | 204.6 | 0.0 |
|---|
| 1M-Seq-50%R_QD1 | 141.6 | 145.8 |
|---|
| 1M-Seq-50%R_QD32 | 92.3 | 92.9 |
|---|
|
...
| | 1M-Seq-100%W_QD1 | 0.0 | 327.6 |
|---|
| 1M-Seq-100%W_QD32 | 0.0 | 189.0 |
|---|
| 1M-rand-100%R_QD1 | 342.9 | 0.0 |
|---|
| 1M-rand-100%R_QD32 | 205.1 | 0.0 |
|---|
| 1M-rand-50%R_QD1 | 142.7 | 145.8 |
|---|
| 1M-rand-50%R_QD32 | 89.7 | 94.7 |
|---|
| 1M-rand-100%W_QD1 | 0.0 | 285.8 |
|---|
| 1M-rand-100%W_QD32 | 0.0 | 182.9 |
|---|
|
1Disk-RAID0 WB SmartPath Disabled
| チャート |
|---|
| imageFormat | png |
|---|
| orientation | horizontal |
|---|
| forgive | false |
|---|
| width | 1000 |
|---|
| rangeAxisLowerBound | 0 |
|---|
| dataOrientation | vertical |
|---|
| title | P420 RAID0 1disk SmartPath Disabled IOPS |
|---|
| type | bar |
|---|
| rangeAxisUpperBound | 100000 |
|---|
| xLabel | Test Pattern |
|---|
| height | 500 |
|---|
|
| Access Specification Name | Read IOps | Write IOps |
|---|
| 512 B; 100% Read; 0% random_QD1 | 3978.4 | 0.0 |
|---|
| 512 B; 100% Read; 0% random_QD32 | 39704.5 | 0.0 |
|---|
| 512 B; 50% Read; 0% random_QD1 | 2090.7 | 2089.1 |
|---|
| 512 B; 50% Read; 0% random_QD32 | 18088.7 | 18101.6 |
|---|
| 512 B; 0% Read; 0% random_QD1 | 0.0 | 13874.9 |
|---|
| 512 B; 0% Read; 0% random_QD32 | 0.0 | 44595.3 |
|---|
| 4 KiB; 100% Read; 0% random_QD1 | 3799.3 | 0.0 |
|---|
| 4 KiB; 100% Read; 0% random_QD32 | 45016.8 | 0.0 |
|---|
| 4 KiB; 50% Read; 0% random_QD1 | 1852.8 | 1851.5 |
|---|
| 4 KiB; 50% Read; 0% random_QD32 | 13908.4 | 13879.6 |
|---|
| 4 KiB; 0% Read; 0% random_QD1 | 0.0 | 11953.1 |
|---|
| 4 KiB; 0% Read; 0% random_QD32 | 0.0 |
|---|
|
...
...
| 9 | | 256 KiB; 100% Read; 0% random_QD1 |
|---|
|
...
...
| 9 | 0.0 | | 256 KiB; 100% Read; 0% random_QD32 |
|---|
|
...
...
| 6 | 0.0 | | 256 KiB; 50% Read; 0% random_QD1 |
|---|
|
...
...
...
...
| 0 | | 256 KiB; 50% Read; 0% random_QD32 |
|---|
|
...
...
...
...
| 7 | | 256 KiB; 0% Read; 0% random_QD1 | 0.0 |
|---|
|
...
...
| 2 | | 256 KiB; 0% Read; 0% random_QD32 | 0.0 | 2141.7 |
|---|
| 1M-Seq-100%R_QD1 | 833.7 | 0. |
|---|
|
...
| 0 | | 1M-Seq-100%R_QD32 | 1679.6 | 0.0 |
|---|
| 1M-Seq-50%R_QD1 | 237.3 | 240.0 |
|---|
|
...
| | 1M-Seq-50%R_QD32 | 342.7 | 355.7 |
|---|
| 1M-Seq-100%W_QD1 | 0.0 | 534.0 |
|---|
| 1M-Seq-100%W_QD32 | 0.0 | 536.3 |
|---|
| 1M-rand-100%R_QD1 | 826.6 | 0.0 |
|---|
| 1M-rand-100%R_QD32 | 1720.1 | 0.0 |
|---|
| 1M-rand-50%R_QD1 | 233.1 | 238.9 |
|---|
| 1M-rand-50%R_QD32 | 348.3 | 348.7 |
|---|
| 1M-rand-100%W_QD1 | 0.0 | 484.0 |
|---|
| 1M-rand-100%W_QD32 | 0.0 | 499.0 |
|---|
|
| チャート |
|---|
| imageFormat | png |
|---|
| orientation | horizontal |
|---|
| forgive | false |
|---|
| width | 1000 |
|---|
| rangeAxisLowerBound | 0 |
|---|
| dataOrientation | vertical |
|---|
| title | P420 RAID0 1disk SmartPath Disabled MB/s |
|---|
| type | bar |
|---|
| rangeAxisUpperBound | 2500 |
|---|
| xLabel | Test Pattern |
|---|
| height | 500 |
|---|
|
| Access Specification Name | Read MBps (Decimal) | Write MBps (Decimal) |
|---|
| 512 B; 100% Read; 0% random_QD1 | 2.0 | 0.0 |
|---|
| 512 B; 100% Read; 0% random_QD32 | 20.3 | 0.0 |
|---|
| 512 B; 50% Read; 0% random_QD1 | 1.1 | 1.1 |
|---|
| 512 B; 50% Read; 0% random_QD32 | 9.3 | 9.3 |
|---|
| 512 B; 0% Read; 0% random_QD1 | 0.0 | 7.1 |
|---|
| 512 B; 0% Read; 0% random_QD32 | 0.0 | 22.8 |
|---|
| 4 |
|---|
|
...
| KiB; 100% Read; 0% random_QD1 | 15.6 | 0.0 |
|---|
| 4 KiB; 100% Read; 0% random_QD32 | 184.4 | 0.0 |
|---|
| 4 KiB; 50% Read; 0% random_QD1 | 7.6 | 7.6 |
|---|
| 4 KiB; 50% Read; 0% random_QD32 | 57.0 | 56.9 |
|---|
| 4 KiB; 0% Read; 0% random_QD1 | 0.0 | 49.0 |
|---|
| 4 KiB; 0% Read; 0% random_QD32 | 0.0 | 121.8 |
|---|
| 256 KiB; 100% Read; 0% random_QD1 | 380.1 | 0.0 |
|---|
| 256 KiB; 100% Read; 0% random_QD32 | 1689.1 | 0.0 |
|---|
| 256 KiB; 50% Read; 0% random_QD1 | 149.6 | 151.3 |
|---|
| 256 KiB; 50% Read; 0% random_QD32 | 304.9 | 307.4 |
|---|
| 256 KiB; 0% Read; 0% random_QD1 | 0.0 | 407.7 |
|---|
| 256 KiB; 0% Read; 0% random_QD32 | 0.0 | 561.4 |
|---|
| 1M-Seq-100%R_QD1 | 874.2 | 0.0 |
|---|
| 1M-Seq-100%R_QD32 | 1761.1 | 0.0 |
|---|
| 1M-Seq-50%R_QD1 |
|---|
|
...
| 248.9 | 251.7 | | 1M-Seq-50%R_QD32 | 359.4 | 373.0 |
|---|
| 1M-Seq-100%W_QD1 | 0.0 | 560.0 |
|---|
| 1M-Seq-100%W_QD32 | 0.0 | 562.3 |
|---|
| 1M-rand-100%R_QD1 | 866.7 | 0.0 |
|---|
| 1M-rand-100%R_QD32 | 1803.7 | 0.0 |
|---|
| 1M-rand-50%R_QD1 | 244.4 | 250.5 |
|---|
| 1M-rand-50%R_QD32 | 365.2 | 365.6 |
|---|
| 1M-rand-100%W_QD1 | 0.0 | 507.5 |
|---|
| 1M-rand-100%W_QD32 | 0.0 | 523.3 |
|---|
|
| チャート |
|---|
| imageFormat | png |
|---|
| orientation | horizontal |
|---|
| dataDisplay | after |
|---|
| forgive | false |
|---|
| width | 1000 |
|---|
| dataOrientation | vertical |
|---|
| title | SSP Enabled vs Disabled |
|---|
| type | bar |
|---|
| yLabel | Enabled vs Disabled (%) |
|---|
| xLabel | Test Pattern |
|---|
| height | 500 |
|---|
|
| Access Specification Name | 対SSP有効時比Read IOps 増分(%) | 対SSP有効時比Write IOps増分(%) |
|---|
| 512 B; 100% Read; 0% random_QD1 | -72.5 | 0.0 |
|---|
| 512 B; 100% Read; 0% random_QD32 | -21.7 | 0.0 |
|---|
| 512 B; 50% Read; 0% random_QD1 | 55.7 | 55.2 |
|---|
| 512 B; 50% Read; 0% random_QD32 | 13560.0 | 13470.3 |
|---|
| 512 B; 0% Read; 0% random_QD1 | 0.0 | 15.2 |
|---|
| 512 B; 0% Read; 0% random_QD32 | 0.0 | 18007.5 |
|---|
| 4 KiB; 100% Read; 0% random_QD1 | -69.7 | 0.0 |
|---|
| 4 KiB; 100% Read; 0% random_QD32 | 153.3 | 0.0 |
|---|
| 4 KiB; 50% Read; 0% random_QD1 | -13.7 | -14.1 |
|---|
| 4 KiB; 50% Read; 0% random_QD32 | 4108.0 | 4004.7 |
|---|
| 4 KiB; 0% Read; 0% random_QD1 | 0.0 | 4.6 |
|---|
| 4 KiB; 0% Read; 0% random_QD32 | 0.0 | 39.8 |
|---|
| 256 KiB; 100% Read; 0% random_QD1 | 3.6 | 0.0 |
|---|
| 256 KiB; 100% Read; 0% random_QD32 | 2684.7 | 0.0 |
|---|
| 256 KiB; 50% Read; 0% random_QD1 | 58.2 | 59.5 |
|---|
| 256 KiB; 50% Read; 0% random_QD32 | 916.0 | 911.9 |
|---|
| 256 KiB; 0% Read; 0% random_QD1 | 0.0 | 31.8 |
|---|
| 256 KiB; 0% Read; 0% random_QD32 | 0.0 | 832.6 |
|---|
| 1M-Seq-100%R_QD1 | 97.5 | 0.0 |
|---|
| 1M-Seq-100%R_QD32 | 760.9 | 0.0 |
|---|
| 1M-Seq-50%R_QD1 | 75.8 | 72.6 |
|---|
| 1M-Seq-50%R_QD32 | 289.4 | 301.5 |
|---|
| 1M-Seq-100%W_QD1 | 0.0 | 70.9 |
|---|
| 1M-Seq-100%W_QD32 | 0.0 | 197.5 |
|---|
| 1M-rand-100%R_QD1 | 152.7 | 0.0 |
|---|
| 1M-rand-100%R_QD32 | 779.5 | 0.0 |
|---|
| 1M-rand-50%R_QD1 | 71.2 | 71.8 |
|---|
| 1M-rand-50%R_QD32 | 307.0 | 285.9 |
|---|
| 1M-rand-100%W_QD1 | 0.0 | 77.6 |
|---|
| 1M-rand-100%W_QD32 | 0.0 | 186.2 |
|---|
|
値をみると、SSP有効時は512BQD1の読み込みが14kIOPSに対して、無効にすると4kIOPSまで劣化しました。しかし、50%のR/W時にはSSP有効時には読み書き共に134IOPS(kではない)まで落ちるのに対して、SSP無効時には読み書き14kIOPSまで回復しています。それのせいで無効時に+18007.5%という値が出てしまい、グラフがぶっ壊れています。
SSPの「所定の要件を満たすサイズの小さい要求」というのはどうやら512Bや4k等の読み込みに対しては特に効果的ですが、SmartPathを通すかのIOの判断のオーバーヘッドか、512Bの書き込みでは性能劣化が起きます。「細かい読み取りが頻繁に起きる」環境以外では無効にした方が良さそうです。
しかし、5Gのデータサイズを指定しているはずなのですが、1MQD32の読み込み時に1803.7MB/sという、明らかに限界突破をしている値が出ているのが謎です。キャッシュは1GBのはずなので、そこに乗り切るとは思えないのですが。IOパターンがRepeating bytes(AAABBBCCCみたいな繰り返しになる)を指定しているため、キャッシュ上の圧縮が効いているなどあるのでしょうか。これについてはLSIのカードとは動きが違うようでよく分かりません。
1Disk-JBOD
| チャート |
|---|
| imageFormat | png |
|---|
| orientation | horizontal |
|---|
| forgive | false |
|---|
| width | 1000 |
|---|
| rangeAxisLowerBound | 0 |
|---|
| dataOrientation | vertical |
|---|
| title | P420 RAID0 1disk SmartPath Enabled IOPS |
|---|
| type | bar |
|---|
| rangeAxisUpperBound | 100000 |
|---|
| xLabel | Test Pattern |
|---|
| height | 500 |
|---|
|
| Access Specification Name | Read IOps | Write IOps |
|---|
| 512 B; 100% Read; 0% random_QD1 | 12564.7 | 0.0 |
|---|
| 512 B; 100% Read; 0% random_QD32 | 95350.6 | 0.0 |
|---|
| 512 B; 50% Read; 0% random_QD1 | 732.7 | 744.9 |
|---|
| 512 B; 50% Read; 0% random_QD32 | 1146.0 | 1142.2 |
|---|
| 512 B; 0% Read; 0% random_QD1 | 0.0 | 1007.7 |
|---|
| 512 B; 0% Read; 0% random_QD32 | 0.0 | 1237.4 |
|---|
| 4 KiB; 100% Read; 0% random_QD1 | 12073.1 | 0.0 |
|---|
| 4 KiB; 100% Read; 0% random_QD32 | 44216.9 | 0.0 |
|---|
| 4 KiB; 50% Read; 0% random_QD1 | 879.5 | 879.5 |
|---|
| 4 KiB; 50% Read; 0% random_QD32 | 1303.8 | 1307.1 |
|---|
| 4 KiB; 0% Read; 0% random_QD1 | 0.0 | 1122.7 |
|---|
| 4 KiB; 0% Read; 0% random_QD32 | 0.0 | 1429.8 |
|---|
| 256 KiB; 100% Read; 0% random_QD1 | 1351.6 | 0.0 |
|---|
| 256 KiB; 100% Read; 0% random_QD32 | 1631.3 | 0.0 |
|---|
| 256 KiB; 50% Read; 0% random_QD1 | 151.8 | 155.3 |
|---|
| 256 KiB; 50% Read; 0% random_QD32 | 218.4 | 221.8 |
|---|
| 256 KiB; 0% Read; 0% random_QD1 | 0.0 | 229.2 |
|---|
| 256 KiB; 0% Read; 0% random_QD32 | 0.0 | 292.9 |
|---|
| 1M-Seq-100%R_QD1 | 394.2 | 0.0 |
|---|
| 1M-Seq-100%R_QD32 | 423.7 | 0.0 |
|---|
| 1M-Seq-50%R_QD1 | 72.8 | 74.0 |
|---|
| 1M-Seq-50%R_QD32 | 83.7 | 85.2 |
|---|
| 1M-Seq-100%W_QD1 | 0.0 | 101.6 |
|---|
| 1M-Seq-100%W_QD32 | 0.0 | 108.9 |
|---|
| 1M-rand-100%R_QD1 | 302.0 | 0.0 |
|---|
| 1M-rand-100%R_QD32 | 424.4 | 0.0 |
|---|
| 1M-rand-50%R_QD1 | 74.0 | 73.4 |
|---|
| 1M-rand-50%R_QD32 | 85.3 | 83.6 |
|---|
| 1M-rand-100%W_QD1 | 0.0 |
|---|
|
...
...
...
...
| チャート |
|---|
| imageFormat | png |
|---|
| orientation | horizontal |
|---|
| forgive | false |
|---|
| width | 1000 |
|---|
| rangeAxisLowerBound | 0 |
|---|
| dataOrientation | vertical |
|---|
| title | P420 RAID0 1disk SmartPath Enabled MB/s |
|---|
| type | bar |
|---|
| rangeAxisUpperBound | 2500 |
|---|
| xLabel | Test Pattern |
|---|
| height | 500 |
|---|
|
| Access Specification Name | Read MBps (Decimal) | Write MBps (Decimal) |
|---|
| 512 B; 100% Read; 0% random_ |
|---|
|
...
512BアクセスのRead50%/Write50%時はキャッシュを有効にすると無しに比べて+200%になるので、WTの3倍近い性能向上を得られますが、それ以外の場合は大体性能劣化が起きているようです。
WBの効果が出ているかCDMも走らせてみましたが、キャッシュに収まる100MBでテストしたところキャッシュ速度はずいぶんと速いようです。
4Disk-RAID0 WT
Image Removed
Image Removed
IOPS的にいえば1ディスク構成時の90kからあまり増加はないので、コントローラ的には90kIOPSくらいが限界のようです。
一方、ディスクの読み込みについては1ディスク構成時に最大450MB/sだったのが4本構成で約1800MB/sなので、順当に伸びているようです。
こ れらから、最大90kIOPSか2GB/sまでの帯域のどちらかがに触れない範囲で使う事になりそうです。いずれにしても、IOPSについてはHDDでは 間違いなく到達できない範囲なので、HDDで運用する限りRAIDカードがネックになると言うことはないと思われます。
HDDを16台くらいぶら下げれば、帯域の方はシーケンシャルIOで上限にあたる可能性がありますが、それなりにがんばらないと到達できないと思います。
4Disk-RAID0 WB
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Image Removed
例によってWT/WBの対比が分からないので増分
Image Removed
| QD1 | 6.1 | 0.0 |
|---|
| 512 B; 100% Read; 0% random_QD32 | 46.6 | 0.0 |
|---|
| 512 B; 50% Read; 0% random_QD1 | 0.4 | 0.4 |
|---|
| 512 B; 50% Read; 0% random_QD32 | 0.6 | 0.6 |
|---|
| 512 B; 0% Read; 0% random_QD1 | 0.0 | 0.5 |
|---|
| 512 B; 0% Read; 0% random_QD32 | 0.0 | 0.6 |
|---|
| 4 KiB; 100% Read; 0% random_QD1 | 47.2 | 0.0 |
|---|
| 4 KiB; 100% Read; 0% random_QD32 | 172.7 | 0.0 |
|---|
| 4 KiB; 50% Read; 0% random_QD1 | 3.4 | 3.4 |
|---|
| 4 KiB; 50% Read; 0% random_QD32 | 5.1 | 5.1 |
|---|
| 4 KiB; 0% Read; 0% random_QD1 | 0.0 | 4.4 |
|---|
| 4 KiB; 0% Read; 0% random_QD32 | 0.0 | 5.6 |
|---|
| 256 KiB; 100% Read; 0% random_QD1 | 337.9 | 0.0 |
|---|
| 256 KiB; 100% Read; 0% random_QD32 | 407.8 | 0.0 |
|---|
| 256 KiB; 50% Read; 0% random_QD1 | 38.0 | 38.8 |
|---|
| 256 KiB; 50% Read; 0% random_QD32 | 54.6 | 55.4 |
|---|
| 256 KiB; 0% Read; 0% random_QD1 | 0.0 | 57.3 |
|---|
| 256 KiB; 0% Read; 0% random_QD32 | 0.0 | 73.2 |
|---|
| 1M-Seq-100%R_QD1 | 394.2 | 0.0 |
|---|
| 1M-Seq-100%R_QD32 | 423.7 | 0.0 |
|---|
| 1M-Seq-50%R_QD1 | 72.8 | 74.0 |
|---|
| 1M-Seq-50%R_QD32 | 83.7 | 85.2 |
|---|
| 1M-Seq-100%W_QD1 | 0.0 | 101.6 |
|---|
| 1M-Seq-100%W_QD32 | 0.0 | 108.9 |
|---|
| 1M-rand-100%R_QD1 | 302.0 | 0.0 |
|---|
| 1M-rand-100%R_QD32 | 424.4 | 0.0 |
|---|
| 1M-rand-50%R_QD1 | 74.0 | 73.4 |
|---|
| 1M-rand-50%R_QD32 | 85.3 | 83.6 |
|---|
| 1M-rand-100%W_QD1 | 0.0 | 98.2 |
|---|
| 1M-rand-100%W_QD32 | 0.0 | 105.6 |
|---|
|
試しに、アレイをといてJBODのベンチマークも行いました。読み込みはQD32時に90kIOPS出ているので優秀なのですが、書き込みが全般的にダメなようです。IOPS的にもダメですが、1M読み込みで100MB/s程度しか出ていないのも問題だと思います。
ディスクキャッシュが有効になってないような動きですが、JBOD時にはディスクキャッシュを有効に出来ませんでした。
| コード ブロック |
|---|
=> ctrl slot=1 modify drivewritecache=true
Error: This operation is not supported with the current configuration. Use the
"show" command on devices to show additional details about the
configuration.
Reason: Controller not configured |
OSから直接SMARTが見えるのは良いのですが、通常は1つのディスクであってもRAID0を組んだ方が良いみたいです。
4Disks-RAID0 WB SmartPath Enabled
| チャート |
|---|
| imageFormat | png |
|---|
| orientation | horizontal |
|---|
| forgive | false |
|---|
| width | 1000 |
|---|
| rangeAxisLowerBound | 0 |
|---|
| dataOrientation | vertical |
|---|
| title | P420 RAID0 4disk SmartPath Enabled IOPS |
|---|
| type | bar |
|---|
| rangeAxisUpperBound | 100000 |
|---|
| xLabel | Test Pattern |
|---|
| height | 500 |
|---|
|
| Access Specification Name | Read IOps | Write IOps |
|---|
| 512 B; 100% Read; 0% random_QD1 |
|---|
|
...
...
| 7 | 0.0 | | 512 B; 100% Read; 0% random_QD32 |
|---|
|
...
...
| 3 | 0.0 | | 512 B; 50% Read; 0% random_QD1 |
|---|
|
...
...
...
...
| 5 | | 512 B; 50% Read; 0% random_QD32 |
|---|
|
...
...
...
...
| 7 | | 512 B; 0% Read; 0% random_QD1 | 0.0 |
|---|
|
...
...
| 7 | | 512 B; 0% Read; 0% random_QD32 | 0.0 |
|---|
|
...
...
| 0 | | 4 KiB; 100% Read; 0% random_QD1 |
|---|
|
...
...
| 6 | 0.0 | | 4 KiB; 100% Read; 0% random_QD32 |
|---|
|
...
...
| 0 | 0.0 | | 4 KiB; 50% Read; 0% random_QD1 | 2116.3 | 2117.6 |
|---|
| 4 |
|---|
|
...
| KiB; 50% Read; 0% random_QD32 | 7463.3 | 7444.3 |
|---|
| 4 KiB; 0% Read; 0% random_QD1 | 0.0 | 11310.7 |
|---|
| 4 KiB; 0% Read; 0% random_QD32 | 0.0 | 47139.8 |
|---|
| 256 KiB; 100% Read; 0% random_QD1 | 1474.3 | 0.0 |
|---|
| 256 KiB; 100% Read; 0% random_QD32 | 6851.5 | 0.0 |
|---|
| 256 KiB; 50% Read; 0% random_QD1 | 499.6 | 506.1 |
|---|
| 256 KiB; 50% Read; 0% random_QD32 | 2027.2 | 2037.5 |
|---|
| 256 KiB; 0% Read; 0% random_QD1 | 0.0 | 1242.8 |
|---|
| 256 KiB; 0% Read; 0% random_QD32 | 0.0 | 4893.3 |
|---|
| 1M-Seq-100%R_QD1 | 1190.2 | 0.0 |
|---|
| 1M-Seq-100%R_QD32 | 1713.9 | 0.0 |
|---|
| 1M-Seq-50%R_QD1 | 294.9 | 293.0 |
|---|
| 1M-Seq-50%R_QD32 | 520.0 | 517.5 |
|---|
|
...
| | 1M-Seq-100%W_QD1 | 0.0 | 853.3 |
|---|
| 1M-Seq-100%W_QD32 | 0.0 | 1220.3 |
|---|
| 1M-rand-100%R_QD1 | 730.4 | 0.0 |
|---|
| 1M-rand-100%R_QD32 | 1680.1 | 0.0 |
|---|
| 1M-rand-50%R_QD1 | 298.9 | 288.2 |
|---|
| 1M-rand-50%R_QD32 | 509.0 | 512.5 |
|---|
| 1M-rand-100%W_QD1 | 0.0 | 828.4 |
|---|
| 1M-rand-100%W_QD32 | 0.0 | 948.2 |
|---|
|
| チャート |
|---|
| imageFormat | png |
|---|
| orientation | horizontal |
|---|
| forgive | false |
|---|
| width | 1000 |
|---|
| rangeAxisLowerBound | 0 |
|---|
| dataOrientation | vertical |
|---|
| title | P420 RAID0 4disk SmartPath Enabled MB/s |
|---|
| type | bar |
|---|
| rangeAxisUpperBound | 2500 |
|---|
| xLabel | Test Pattern |
|---|
| height | 500 |
|---|
|
| Access Specification Name | Read MBps (Decimal) | Write MBps (Decimal) |
|---|
| 512 B; 100% Read; 0% random_QD1 | 7.4 | 0.0 |
|---|
| 512 B; 100% Read; 0% random_QD32 | 41.2 | 0.0 |
|---|
| 512 B; 50% Read; 0% random_QD1 | 0.7 | 0.7 |
|---|
| 512 B; 50% Read; 0% random_QD32 | 0.3 | 0.3 |
|---|
| 512 B; 0% Read; 0% random_QD1 | 0.0 | 6.1 |
|---|
| 512 B; 0% Read; 0% random_QD32 | 0.0 | 14.7 |
|---|
| 4 KiB; 100% Read; 0% random_QD1 | 47.3 | 0.0 |
|---|
| 4 KiB; 100% Read; 0% random_QD32 | 257.1 | 0.0 |
|---|
| 4 KiB; 50% Read; 0% random_QD1 | 8.7 | 8.7 |
|---|
| 4 KiB; 50% Read; 0% random_QD32 | 30.6 | 30.5 |
|---|
| 4 KiB; 0% Read; 0% random_QD1 | 0.0 | 46.3 |
|---|
| 4 KiB; 0% Read; 0% random_QD32 | 0.0 |
|---|
|
...
...
| 1 | | 256 KiB; 100% Read; 0% random_QD1 |
|---|
|
...
...
| 5 | 0.0 | | 256 KiB; 100% Read; 0% random_QD32 | 1796.1 |
|---|
|
...
| 0.0 | | 256 KiB; 50% Read; 0% random_QD1 |
|---|
|
...
...
...
...
| 7 | | 256 KiB; 50% Read; 0% random_QD32 |
|---|
|
...
...
...
...
| 1 | | 256 KiB; 0% Read; 0% random_QD1 | 0.0 |
|---|
|
...
...
| 8 | | 256 KiB; 0% Read; 0% random_QD32 | 0.0 |
|---|
|
...
| 1282.8 | | 1M-Seq-100%R_QD1 | 1248.0 | 0.0 |
|---|
| 1M-Seq-100%R_QD32 | 1797.1 | 0.0 |
|---|
| 1M-Seq-50%R_QD1 | 309.2 | 307.2 |
|---|
| 1M-Seq-50%R_QD32 | 545.2 | 542. |
|---|
|
...
| 6 | | 1M-Seq-100%W_QD1 | 0.0 | 894.8 |
|---|
| 1M-Seq-100%W_QD32 | 0.0 | 1279.6 |
|---|
| 1M-rand-100%R_QD1 | 765.9 | 0.0 |
|---|
| 1M-rand-100%R_QD32 | 1761.7 | 0.0 |
|---|
| 1M-rand-50%R_QD1 | 313.5 | 302.2 |
|---|
|
...
| | 1M-rand-50%R_QD32 | 533.7 | 537.4 |
|---|
| 1M-rand-100%W_QD1 | 0.0 | 868.6 |
|---|
| 1M-rand-100%W_QD32 | 0.0 | 994.3 |
|---|
|
4Disk-RAID0 WB SmartPath Disabled
| チャート |
|---|
| imageFormat | png |
|---|
| orientation | horizontal |
|---|
| forgive | false |
|---|
| width | 1000 |
|---|
| rangeAxisLowerBound | 0 |
|---|
| dataOrientation | vertical |
|---|
| title | P420 RAID0 1disk SmartPath Disabled IOPS |
|---|
| type | bar |
|---|
| rangeAxisUpperBound | 100000 |
|---|
| xLabel | Test Pattern |
|---|
| height | 500 |
|---|
|
| Access Specification Name | Read IOps | Write IOps |
|---|
| 512 B; 100% Read; 0% random_QD1 | 25538.4 | 0.0 |
|---|
| 512 B; 100% Read; 0% random_QD32 | 74431.7 | 0.0 |
|---|
| 512 B; 50% Read; 0% random_QD1 | 12114.3 | 12088.1 |
|---|
| 512 B; 50% Read; 0% random_QD32 | 35001.2 | 35057.8 |
|---|
| 512 B; 0% Read; 0% random_QD1 | 0.0 | 23295.9 |
|---|
| 512 B; 0% Read; 0% random_QD32 | 0.0 | 66532.4 |
|---|
| 4 KiB; 100% Read; 0% random_QD1 | 24976.3 | 0.0 |
|---|
| 4 KiB; 100% Read; 0% random_QD32 | 76891.2 | 0.0 |
|---|
| 4 KiB; 50% Read; 0% random_QD1 | 11710.3 | 11688.7 |
|---|
| 4 KiB; 50% Read; 0% random_QD32 | 34267.4 | 34294.5 |
|---|
| 4 KiB; 0% Read; 0% random_QD1 | 0.0 | 22599.2 |
|---|
| 4 KiB; 0% Read; 0% random_QD32 | 0.0 | 65414.0 |
|---|
| 256 KiB; 100% Read; 0% random_QD1 | 4307.2 | 0.0 |
|---|
| 256 KiB; 100% Read; 0% random_QD32 | 7410.0 | 0.0 |
|---|
| 256 KiB; 50% Read; 0% random_QD1 | 717.6 | 730.3 |
|---|
| 256 KiB; 50% Read; 0% random_QD32 | 1664.8 | 1656.0 |
|---|
| 256 KiB; 0% Read; 0% random_QD1 | 0.0 | 4522.4 |
|---|
| 256 KiB; 0% Read; 0% random_QD32 | 0.0 | 4825.3 |
|---|
| 1M-Seq-100%R_QD1 | 1211.7 | 0.0 |
|---|
| 1M-Seq-100%R_QD32 | 1937.1 | 0.0 |
|---|
| 1M-Seq-50%R_QD1 | 276.3 | 279.2 |
|---|
| 1M-Seq-50%R_QD32 | 554.8 | 547.4 |
|---|
| 1M-Seq-100%W_QD1 | 0.0 | 822.7 |
|---|
| 1M-Seq-100%W_QD32 | 0.0 | 1217.7 |
|---|
| 1M-rand-100%R_QD1 | 812.7 | 0.0 |
|---|
| 1M-rand-100%R_QD32 | 2015.4 | 0.0 |
|---|
| 1M-rand-50%R_QD1 | 291.3 | 291.7 |
|---|
| 1M-rand-50%R_QD32 | 635.8 | 639.2 |
|---|
| 1M-rand-100%W_QD1 | 0.0 | 812.1 |
|---|
| 1M-rand-100%W_QD32 | 0.0 | 1106.6 |
|---|
|
| チャート |
|---|
| imageFormat | png |
|---|
| orientation | horizontal |
|---|
| forgive | false |
|---|
| width | 1000 |
|---|
| rangeAxisLowerBound | 0 |
|---|
| dataOrientation | vertical |
|---|
| title | P420 RAID0 1disk SmartPath Disabled MB/s |
|---|
| type | bar |
|---|
| rangeAxisUpperBound | 2500 |
|---|
| xLabel | Test Pattern |
|---|
| height | 500 |
|---|
|
| Access Specification Name | Read MBps (Decimal) | Write MBps (Decimal) |
|---|
| 512 B; 100% Read; 0% random_QD1 | 13.1 | 0.0 |
|---|
| 512 B; 100% Read; 0% random_QD32 | 38.1 | 0.0 |
|---|
| 512 B; 50% Read; 0% random_QD1 | 6.2 | 6.2 |
|---|
| 512 B; 50% Read; 0% random_QD32 | 17.9 | 17.9 |
|---|
| 512 B; 0% Read; 0% random_QD1 | 0.0 | 11.9 |
|---|
| 512 B; 0% Read; 0% random_QD32 | 0.0 | 34.1 |
|---|
| 4 KiB; 100% Read; 0% random_QD1 | 102.3 | 0.0 |
|---|
| 4 KiB; 100% Read; 0% random_QD32 | 314.9 | 0.0 |
|---|
| 4 KiB; 50% Read; 0% random_QD1 | 48.0 | 47.9 |
|---|
| 4 KiB; 50% Read; 0% random_QD32 | 140.4 | 140.5 |
|---|
| 4 KiB; 0% Read; 0% random_QD1 | 0.0 | 92.6 |
|---|
| 4 KiB; 0% Read; 0% random_QD32 | 0.0 | 267.9 |
|---|
| 256 KiB; 100% Read; 0% random_QD1 | 1129.1 | 0.0 |
|---|
| 256 KiB; 100% Read; 0% random_QD32 | 1942.5 | 0.0 |
|---|
| 256 KiB; 50% Read; 0% random_QD1 | 188.1 | 191.5 |
|---|
| 256 KiB; 50% Read; 0% random_QD32 | 436.4 | 434.1 |
|---|
| 256 KiB; 0% Read; 0% random_QD1 | 0.0 | 1185.5 |
|---|
| 256 KiB; 0% Read; 0% random_QD32 | 0.0 | 1264.9 |
|---|
| 1M-Seq-100%R_QD1 | 1270.6 | 0.0 |
|---|
| 1M-Seq-100%R_QD32 | 2031.2 | 0.0 |
|---|
| 1M-Seq-50%R_QD1 | 289.7 | 292.7 |
|---|
| 1M-Seq-50%R_QD32 | 581.8 | 574.0 |
|---|
| 1M-Seq-100%W_QD1 | 0.0 | 862.6 |
|---|
| 1M-Seq-100%W_QD32 | 0.0 | 1276.9 |
|---|
| 1M-rand-100%R_QD1 | 852.1 | 0.0 |
|---|
| 1M-rand-100%R_QD32 | 2113.3 | 0.0 |
|---|
| 1M-rand-50%R_QD1 | 305.5 | 305.9 |
|---|
| 1M-rand-50%R_QD32 | 666.7 | 670.2 |
|---|
| 1M-rand-100%W_QD1 | 0.0 | 851.5 |
|---|
| 1M-rand-100%W_QD32 | 0.0 | 1160.3 |
|---|
|
| チャート |
|---|
| imageFormat | png |
|---|
| orientation | horizontal |
|---|
| dataDisplay | after |
|---|
| forgive | false |
|---|
| width | 1000 |
|---|
| dataOrientation | vertical |
|---|
| title | SSP Enabled vs Disabled 4Disk |
|---|
| type | bar |
|---|
| yLabel | Enabled vs Disabled (%) |
|---|
| xLabel | Test Pattern |
|---|
| height | 500 |
|---|
|
| Access Specification Name | 対SSP有効時比Read IOps 増分(%) | 対SSP有効時比Write IOps増分(%) |
|---|
| 512 B; 100% Read; 0% random_QD1 | 76.4 | 0.0 |
|---|
| 512 B; 100% Read; 0% random_QD32 | -7.5 | 0.0 |
|---|
| 512 B; 50% Read; 0% random_QD1 | 807.7 | 805.8 |
|---|
| 512 B; 50% Read; 0% random_QD32 | 5971.3 | 5937.4 |
|---|
| 512 B; 0% Read; 0% random_QD1 | 0.0 | 94.8 |
|---|
| 512 B; 0% Read; 0% random_QD32 | 0.0 | 131.5 |
|---|
| 4 KiB; 100% Read; 0% random_QD1 | 116.5 | 0.0 |
|---|
| 4 KiB; 100% Read; 0% random_QD32 | 22.5 | 0.0 |
|---|
| 4 KiB; 50% Read; 0% random_QD1 | 453.3 | 452.0 |
|---|
| 4 KiB; 50% Read; 0% random_QD32 | 359.1 | 360.7 |
|---|
| 4 KiB; 0% Read; 0% random_QD1 | 0.0 | 99.8 |
|---|
| 4 KiB; 0% Read; 0% random_QD32 | 0.0 | 38.8 |
|---|
| 256 KiB; 100% Read; 0% random_QD1 | 192.2 | 0.0 |
|---|
| 256 KiB; 100% Read; 0% random_QD32 | 8.2 | 0.0 |
|---|
| 256 KiB; 50% Read; 0% random_QD1 | 43.6 | 44.3 |
|---|
| 256 KiB; 50% Read; 0% random_QD32 | -17.9 | -18.7 |
|---|
| 256 KiB; 0% Read; 0% random_QD1 | 0.0 | 263.9 |
|---|
| 256 KiB; 0% Read; 0% random_QD32 | 0.0 | -1.4 |
|---|
| 1M-Seq-100%R_QD1 | 1.8 | 0.0 |
|---|
| 1M-Seq-100%R_QD32 | 13.0 | 0.0 |
|---|
| 1M-Seq-50%R_QD1 | -6.3 | -4.7 |
|---|
| 1M-Seq-50%R_QD32 | 6.7 | 5.8 |
|---|
| 1M-Seq-100%W_QD1 | 0.0 | -3.6 |
|---|
| 1M-Seq-100%W_QD32 | 0.0 | - |
|---|
|
...
...
| 2 | | 1M-rand-100%R_QD1 | 11.3 | 0.0 |
|---|
| 1M-rand-100%R_QD32 | 20.0 | 0.0 |
|---|
| 1M-rand-50%R_QD1 | -2.5 | 1. |
|---|
|
...
| 2 | | 1M-rand-50%R_QD32 | 24.9 | 24.7 |
|---|
| 1M-rand-100%W_QD1 | 0.0 | -2.0 |
|---|
| 1M-rand- |
|---|
|
...
CDMでも似た傾向がみれます。
Image Removed
4Disk-RAID5 WT
Image Removed
Image Removed
読み込みはRAID0の1.8GB/sに対して、RAID5でも最大約1.6GB/sと優秀なのですが、書き込みは最大でも300MB/sと残念なことに。
RAID0の時は512BQD32の書き込みが66kIOPSあったのに対して、RAID5の時は26kIOPSまで落ちたので、やはりパリティー計算が必要なRAIDのオーバーヘッドは大きいです。
4Disk-RAID5 WB
...
4台のSSDのRAID0した限り、1台構成時には良かった512Bの読み込みでもSSP無効の方がスコアがよいなど、SSPを有効にすると極一部を除いて全く良いことがないように見えます。特に、QD32のR/W50%時のスコアが
| Read IOps | Write IOps |
|---|
| SSP有効 | 576.5 | 580.7 |
|---|
SSP無効 | 35001.2 | 35057.8 |
|---|
となり、それぞれ+5937%という値が出てしまっていてまたグラフがぶっ壊れています。
4Disks-RAID5 WB SmartPath Enabled
| チャート |
|---|
| imageFormat | png |
|---|
| orientation | horizontal |
|---|
| forgive | false |
|---|
| width | 1000 |
|---|
| rangeAxisLowerBound | 0 |
|---|
| dataOrientation | vertical |
|---|
| title | P420 RAID0 4disk SmartPath Enabled IOPS |
|---|
| type | bar |
|---|
| rangeAxisUpperBound | 100000 |
|---|
| xLabel | Test Pattern |
|---|
| height | 500 |
|---|
|
| Access Specification Name | Read IOps | Write IOps |
|---|
| 512 B; 100% Read; 0% random_QD1 | 14700.5 | 0.0 |
|---|
| 512 B; 100% Read; 0% random_QD32 | 34800.6 | 0.0 |
|---|
| 512 B; 50% Read; 0% random_QD1 | 617.1 | 621.7 |
|---|
| 512 B; 50% Read; 0% random_QD32 | 970.3 | 975.8 |
|---|
| 512 B; 0% Read; 0% random_QD1 | 0.0 | 938.3 |
|---|
| 512 B; 0% Read; 0% random_QD32 | 0.0 | 1190.7 |
|---|
| 4 KiB; 100% Read; 0% random_QD1 | 12746.3 | 0.0 |
|---|
| 4 KiB; 100% Read; 0% random_QD32 | 26593.2 | 0.0 |
|---|
| 4 KiB; 50% Read; 0% random_QD1 | 776.5 | 776.2 |
|---|
| 4 KiB; 50% Read; 0% random_QD32 | 1331.0 | 1324.5 |
|---|
| 4 KiB; 0% Read; 0% random_QD1 | 0.0 | 1014.2 |
|---|
| 4 KiB; 0% Read; 0% random_QD32 | 0.0 | 1305.7 |
|---|
| 256 KiB; 100% Read; 0% random_QD1 | 1250.2 | 0.0 |
|---|
| 256 KiB; 100% Read; 0% random_QD32 | 5861.0 | 0.0 |
|---|
| 256 KiB; 50% Read; 0% random_QD1 | 128.9 | 128.0 |
|---|
| 256 KiB; 50% Read; 0% random_QD32 | 320.9 | 320.3 |
|---|
| 256 KiB; 0% Read; 0% random_QD1 | 0.0 | 162.3 |
|---|
| 256 KiB; 0% Read; 0% random_QD32 | 0.0 | 291.6 |
|---|
| 1M-Seq-100%R_QD1 | 673.9 | 0.0 |
|---|
| 1M-Seq-100%R_QD32 | 1559.1 | 0.0 |
|---|
| 1M-Seq-50%R_QD1 | 77.9 | 79.0 |
|---|
| 1M-Seq-50%R_QD32 | 130.3 | 133.7 |
|---|
| 1M-Seq-100%W_QD1 | 0.0 | 95.0 |
|---|
| 1M-Seq-100%W_QD32 | 0.0 | 137.4 |
|---|
| 1M-rand-100%R_QD1 | 527.8 | 0.0 |
|---|
| 1M-rand-100%R_QD32 | 1643.8 | 0.0 |
|---|
| 1M-rand-50%R_QD1 | 77.1 | 75.2 |
|---|
| 1M-rand-50%R_QD32 | 143.2 | 134.6 |
|---|
| 1M-rand-100%W_QD1 | 0.0 | 88.4 |
|---|
| 1M-rand-100%W_QD32 | 0.0 | 143.0 |
|---|
|
| チャート |
|---|
| imageFormat | png |
|---|
| orientation | horizontal |
|---|
| forgive | false |
|---|
| width | 1000 |
|---|
| rangeAxisLowerBound | 0 |
|---|
| dataOrientation | vertical |
|---|
| title | P420 RAID0 4disk SmartPath Enabled MB/s |
|---|
| type | bar |
|---|
| rangeAxisUpperBound | 2500 |
|---|
| xLabel | Test Pattern |
|---|
| height | 500 |
|---|
|
| Access Specification Name | Read MBps (Decimal) | Write MBps (Decimal) |
|---|
| 512 B; 100% Read; 0% random_QD1 | 7.5 | 0.0 |
|---|
| 512 B; 100% Read; 0% random_QD32 | 17.8 | 0.0 |
|---|
| 512 B; 50% Read; 0% random_QD1 | 0.3 | 0.3 |
|---|
| 512 B; 50% Read; 0% random_QD32 | 0.5 | 0.5 |
|---|
| 512 B; 0% Read; 0% random_QD1 | 0.0 | 0.5 |
|---|
| 512 B; 0% Read; 0% random_QD32 | 0.0 | 0.6 |
|---|
| 4 KiB; 100% Read; 0% random_QD1 | 52.2 | 0.0 |
|---|
| 4 KiB; 100% Read; 0% random_QD32 | 108.9 | 0.0 |
|---|
| 4 KiB; 50% Read; 0% random_QD1 | 3.2 | 3.2 |
|---|
| 4 KiB; 50% Read; 0% random_QD32 | 5.5 | 5.4 |
|---|
| 4 KiB; 0% Read; 0% random_QD1 | 0.0 | 4.2 |
|---|
| 4 KiB; 0% Read; 0% random_QD32 | 0.0 | 5.3 |
|---|
| 256 KiB; 100% Read; 0% random_QD1 | 327.7 | 0.0 |
|---|
| 256 KiB; 100% Read; 0% random_QD32 | 1536.4 | 0.0 |
|---|
| 256 KiB; 50% Read; 0% random_QD1 | 33.8 | 33.6 |
|---|
| 256 KiB; 50% Read; 0% random_QD32 | 84.1 | 84.0 |
|---|
| 256 KiB; 0% Read; 0% random_QD1 | 0.0 | 42.6 |
|---|
| 256 KiB; 0% Read; 0% random_QD32 | 0.0 | 76.4 |
|---|
| 1M-Seq-100%R_QD1 | 706.6 | 0.0 |
|---|
| 1M-Seq-100%R_QD32 | 1634.8 | 0.0 |
|---|
| 1M-Seq-50%R_QD1 | 81.6 | 82.8 |
|---|
| 1M-Seq-50%R_QD32 | 136.6 | 140.2 |
|---|
| 1M-Seq-100%W_QD1 | 0.0 | 99.6 |
|---|
| 1M-Seq-100%W_QD32 | 0.0 | 144.1 |
|---|
| 1M-rand-100%R_QD1 | 553.5 | 0.0 |
|---|
| 1M-rand-100%R_QD32 | 1723.6 | 0.0 |
|---|
| 1M-rand-50%R_QD1 | 80.8 | 78.8 |
|---|
| 1M-rand-50%R_QD32 | 150.1 | 141.1 |
|---|
| 1M-rand-100%W_QD1 | 0.0 | 92.7 |
|---|
| 1M-rand-100%W_QD32 | 0.0 | 150.0 |
|---|
|
4Disk-RAID0 WB SmartPath Disabled
| チャート |
|---|
| imageFormat | png |
|---|
| orientation | horizontal |
|---|
| forgive | false |
|---|
| width | 1000 |
|---|
| rangeAxisLowerBound | 0 |
|---|
| dataOrientation | vertical |
|---|
| title | P420 RAID0 1disk SmartPath Disabled IOPS |
|---|
| type | bar |
|---|
| rangeAxisUpperBound | 100000 |
|---|
| xLabel | Test Pattern |
|---|
| height | 500 |
|---|
|
| Access Specification Name | Read IOps | Write IOps |
|---|
| 512 B; 100% Read; 0% random_QD1 |
|---|
|
...
...
| 2 | 0.0 | | 512 B; 100% Read; 0% random_QD32 |
|---|
|
...
...
| 4 | 0.0 | | 512 B; 50% Read; 0% random_QD1 |
|---|
|
...
...
...
...
| 5 | | 512 B; 50% Read; 0% random_QD32 |
|---|
|
...
...
...
...
| 0 | | 512 B; 0% Read; 0% random_QD1 | 0.0 |
|---|
|
...
...
| 0 | | 512 B; 0% Read; 0% random_QD32 | 0.0 |
|---|
|
...
...
| 9 | | 4 KiB; 100% Read; 0% random_QD1 |
|---|
|
...
...
| 5 | 0.0 | | 4 KiB; 100% Read; 0% random_QD32 |
|---|
|
...
...
| 4 | 0.0 | | 4 KiB; 50% Read; 0% random_QD1 | 9592.8 | 9607.8 |
|---|
| 4 KiB; 50% Read; 0% random_QD32 | 15762.5 | 15765.4 |
|---|
| 4 KiB; 0% Read; 0% random_QD1 | 0.0 | 16347.3 |
|---|
| 4 KiB; 0% Read; 0% random_QD32 | 0.0 | 61880.2 |
|---|
| 256 KiB; 100% Read; 0% random_QD1 | 4487.3 | 0.0 |
|---|
| 256 KiB; 100% Read; 0% random_QD32 | 7008.2 | 0.0 |
|---|
| 256 KiB; 50% Read; 0% random_QD1 | 872.0 | 852.5 |
|---|
| 256 KiB; 50% Read; 0% random_QD32 | 1043.4 | 1042.7 |
|---|
| 256 KiB; 0% Read; 0% random_QD1 | 0.0 | 3267.2 |
|---|
| 256 KiB; 0% Read; 0% random_QD32 | 0.0 | 3713.4 |
|---|
| 1M-Seq-100%R_QD1 | 781.7 | 0. |
|---|
|
...
| 0 | | 1M-Seq-100%R_QD32 | 1819.7 | 0.0 |
|---|
| 1M-Seq-50%R_QD1 | 243.2 | 231.0 |
|---|
| 1M-Seq-50%R_QD32 | 385.7 | 381.6 |
|---|
| 1M-Seq-100%W_QD1 | 0.0 | 931.5 |
|---|
|
...
| | 1M-Seq-100%W_QD32 | 0.0 | 921.2 |
|---|
| 1M-rand-100%R_QD1 | 614.4 | 0.0 |
|---|
| 1M-rand-100%R_QD32 | 1976.7 | 0.0 |
|---|
| 1M-rand-50%R_QD1 | 236.0 | 237.9 |
|---|
| 1M-rand-50%R_QD32 | 421.4 | 420.6 |
|---|
| 1M-rand-100%W_QD1 | 0.0 | 583.8 |
|---|
| 1M-rand-100%W_QD32 | 0.0 | 582.0 |
|---|
|
| チャート |
|---|
| imageFormat | png |
|---|
| orientation | horizontal |
|---|
| forgive | false |
|---|
| width | 1000 |
|---|
| rangeAxisLowerBound | 0 |
|---|
| dataOrientation | vertical |
|---|
| title | P420 RAID0 1disk SmartPath Disabled MB/s |
|---|
| type | bar |
|---|
| rangeAxisUpperBound | 2500 |
|---|
| xLabel | Test Pattern |
|---|
| height | 500 |
|---|
|
| Access Specification Name | Read MBps (Decimal) | Write MBps (Decimal) |
|---|
| 512 B; 100% Read; 0% random_QD1 | 13.2 | 0.0 |
|---|
| 512 B; 100% Read; 0% random_QD32 | 41.3 | 0.0 |
|---|
| 512 B; 50% Read; 0% random_QD1 | 4.9 | 5.0 |
|---|
| 512 B; 50% Read; 0% random_QD32 | 8.6 | 8.6 |
|---|
| 512 B; 0% Read; 0% random_QD1 | 0.0 | 9.8 |
|---|
| 512 B; 0% Read; 0% random_QD32 | 0.0 | 16.9 |
|---|
| 4 KiB; 100% Read; 0% random_QD1 | 103.9 | 0.0 |
|---|
| 4 KiB; 100% Read; 0% random_QD32 | 324.0 | 0.0 |
|---|
| 4 KiB; 50% Read; 0% random_QD1 | 39.3 | 39.4 |
|---|
| 4 KiB; 50% Read; 0% random_QD32 |
|---|
|
...
...
...
...
| 6 | | 4 KiB; 0% Read; 0% random_QD1 | 0.0 |
|---|
|
...
...
| 0 | | 4 KiB; 0% Read; 0% random_QD32 | 0.0 |
|---|
|
...
...
| 5 | | 256 KiB; 100% Read; 0% random_QD1 |
|---|
|
...
...
| 3 | 0.0 | | 256 KiB; 100% Read; 0% random_QD32 |
|---|
|
...
...
| 2 | 0.0 | | 256 KiB; 50% Read; 0% random_QD1 |
|---|
|
...
...
...
...
| 5 | | 256 KiB; 50% Read; 0% random_QD32 |
|---|
|
...
...
...
...
| 3 | | 256 KiB; 0% Read; 0% random_QD1 | 0.0 |
|---|
|
...
...
| 5 | | 256 KiB; 0% Read; 0% random_QD32 | 0.0 |
|---|
|
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
| 3 | 0.0 | | 1M-rand-100%R_QD32 | 2072.8 |
|---|
|
...
...
...
...
...
...
| 441.9 | 441.0 | | 1M-rand-100%W_QD1 | 0.0 | 612.2 |
|---|
| 1M-rand-100%W_QD32 | 0.0 | 610.3 |
|---|
|
| チャート |
|---|
| imageFormat | png |
|---|
| orientation | horizontal |
|---|
| dataDisplay | after |
|---|
| forgive | false |
|---|
| width | 1000 |
|---|
| dataOrientation | vertical |
|---|
| title | SSP Enabled vs Disabled 4Disk |
|---|
| type | bar |
|---|
| yLabel | Enabled vs Disabled (%) |
|---|
| xLabel | Test Pattern |
|---|
| height | 500 |
|---|
|
| Access Specification Name | 対SSP有効時比Read IOps 増分(%) | 対SSP有効時比Write IOps増分(%) |
|---|
| 512 B; 100% Read; 0% random_QD1 | 75.5 | 0.0 |
|---|
| 512 B; 100% Read; 0% random_QD32 | 131.9 | 0.0 |
|---|
| 512 B; 50% Read; 0% random_QD1 | 1463.3 | 1455.3 |
|---|
| 512 B; 50% Read; 0% random_QD32 | 1635.5 | 1625.8 |
|---|
| 512 B; 0% Read; 0% random_QD1 | 0.0 | 1948.7 |
|---|
| 512 B; 0% Read; 0% random_QD32 | 0.0 | 2664.0 |
|---|
| 4 KiB; 100% Read; 0% random_QD1 | 99.1 | 0.0 |
|---|
| 4 KiB; 100% Read; 0% random_QD32 | 197.5 | 0.0 |
|---|
| 4 KiB; 50% Read; 0% random_QD1 | 1135.5 | 1137.8 |
|---|
| 4 KiB; 50% Read; 0% random_QD32 | 1084.3 | 1090.3 |
|---|
| 4 KiB; 0% Read; 0% random_QD1 | 0.0 | 1511.9 |
|---|
| 4 KiB; 0% Read; 0% random_QD32 | 0.0 | 4639.1 |
|---|
| 256 KiB; 100% Read; 0% random_QD1 | 258.9 | 0.0 |
|---|
| 256 KiB; 100% Read; 0% random_QD32 | 19.6 | 0.0 |
|---|
| 256 KiB; 50% Read; 0% random_QD1 | 576.4 | 565.9 |
|---|
| 256 KiB; 50% Read; 0% random_QD32 | 225.2 | 225.6 |
|---|
| 256 KiB; 0% Read; 0% random_QD1 | 0.0 | 1912.5 |
|---|
| 256 KiB; 0% Read; 0% random_QD32 | 0.0 | 1173.6 |
|---|
| 1M-Seq-100%R_QD1 | 16.0 | 0.0 |
|---|
| 1M-Seq-100%R_QD32 | 16.7 | 0.0 |
|---|
| 1M-Seq-50%R_QD1 | 212.4 | 192.3 |
|---|
| 1M-Seq-50%R_QD32 | 196.1 | 185.4 |
|---|
| 1M-Seq-100%W_QD1 | 0.0 | 880.2 |
|---|
| 1M-Seq-100%W_QD32 | 0.0 | 570.5 |
|---|
| 1M-rand-100%R_QD1 | 16.4 | 0.0 |
|---|
| 1M-rand-100%R_QD32 | 20.3 | 0.0 |
|---|
| 1M-rand-50%R_QD1 | 206.2 | 216.4 |
|---|
| 1M-rand-50%R_QD32 | 194.3 | 212.5 |
|---|
| 1M-rand-100%W_QD1 | 0.0 | 560.4 |
|---|
| 1M-rand-100%W_QD32 | 0.0 |
|---|
|
...
...
通説通り、RAID5の時はWBキャッシュがあると性能向上があります。512BQD32の書き込みがWT時には26kIOPSでしたがWB時には44kIOPSまで上がりました。RAID5構成時にはSSPを有効にしても何一つ良いことがありませんでした。存在価値…
また、RAID0の時と違い、大体の場合において性能が上がりました。
CDMでも似た傾向は出ましたが、たとえば4KQD32時の書き込みがIOMeterだとWB時に121MB/s出ているのに対して、CDMだと35MB/sになっているなど、結構違いが出ているので参考値です。
Image Removed気になったのでCDMでサクッとキャッシュに載る100MBのデータを取得してみましたが、はやりSSP無効の方が良い性能が出ます。オンメモリに対しても書き込みが1GB/s程度というのは少し悲しいですが。
Image Added
まとめ
4000円前後で買える割にはそこまで悪くないと思います。RAID5で運用する際にはBBU+キャッシュを、0で運用する際にはキャッシュしない設定にする、と言うのがベストのようです。
キュー長が深ければ読み書き最大80kIOPS、2GB/sくらいの速度はでるようです。オンキャッシュの結果を見るに、PCI-E3.0対応の効果があるのでSSDがもっとあればもう少し上の速度も取れるかもしれませんが、そこまで同型のSSDがないので不明です。
また、ssacliからキャッシュする書き込みデータの閾値などの変更も出来るので、詰めればもっと良い値が出るのかもしれませんが、組み合わせが膨大になるためそこまで検証する気力はありません。。
SSPの動きなど、結構癖のある動きをする上、2017年現在そこまで安く流通していないのでN8103-130の方がおすすめできると思います。
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