何事もメモである。というわけで
まずはLinuxシングルドライブreiserfs
tiobench --numruns 4 --dir /mnt/sdb/ --threads 1
No size specified, using 1792 MB
Run #4: /usr/bin/tiotest -t 1 -f 1792 -r 4000 -b 4096 -d /mnt/sdb/ -T
Unit information
================
File size = megabytes
Blk Size = bytes
Rate = megabytes per second
CPU% = percentage of CPU used during the test
Latency = milliseconds
Lat% = percent of requests that took longer than X seconds
CPU Eff = Rate divided by CPU% - throughput per cpu load
Sequential Reads
File Blk Num Avg Maximum Lat% Lat% CPU
Identifier Size Size Thr Rate (CPU%) Latency Latency >2s >10s Eff
---------------------------- ------ ----- --- ------ ------ --------- ----------- -------- -------- -----
2.6.15-060225-1 1792 4096 1 58.62 14.67% 0.262 456.28 0.00000 0.00000 399
Random Reads
File Blk Num Avg Maximum Lat% Lat% CPU
Identifier Size Size Thr Rate (CPU%) Latency Latency >2s >10s Eff
---------------------------- ------ ----- --- ------ ------ --------- ----------- -------- -------- -----
2.6.15-060225-1 1792 4096 1 0.67 0.854% 23.396 651.18 0.00000 0.00000 78
Sequential Writes
File Blk Num Avg Maximum Lat% Lat% CPU
Identifier Size Size Thr Rate (CPU%) Latency Latency >2s >10s Eff
---------------------------- ------ ----- --- ------ ------ --------- ----------- -------- -------- -----
2.6.15-060225-1 1792 4096 1 52.14 40.04% 0.254 14168.86 0.00044 0.00000 130
Random Writes
File Blk Num Avg Maximum Lat% Lat% CPU
Identifier Size Size Thr Rate (CPU%) Latency Latency >2s >10s Eff
---------------------------- ------ ----- --- ------ ------ --------- ----------- -------- -------- -----
2.6.15-060225-1 1792 4096 1 1.78 0.774% 0.157 24.73 0.00000 0.00000 230
tiobench --numruns 4 --dir /mnt/sdb/ --threads 2
No size specified, using 1792 MB
Run #4: /usr/bin/tiotest -t 2 -f 896 -r 2000 -b 4096 -d /mnt/sdb/ -T
Sequential Reads
File Blk Num Avg Maximum Lat% Lat% CPU
Identifier Size Size Thr Rate (CPU%) Latency Latency >2s >10s Eff
---------------------------- ------ ----- --- ------ ------ --------- ----------- -------- -------- -----
2.6.15-060225-1 1792 4096 2 42.31 20.77% 0.730 1403.99 0.00000 0.00000 204
Random Reads
File Blk Num Avg Maximum Lat% Lat% CPU
Identifier Size Size Thr Rate (CPU%) Latency Latency >2s >10s Eff
---------------------------- ------ ----- --- ------ ------ --------- ----------- -------- -------- -----
2.6.15-060225-1 1792 4096 2 0.70 0.820% 43.787 579.55 0.00000 0.00000 86
Sequential Writes
File Blk Num Avg Maximum Lat% Lat% CPU
Identifier Size Size Thr Rate (CPU%) Latency Latency >2s >10s Eff
---------------------------- ------ ----- --- ------ ------ --------- ----------- -------- -------- -----
2.6.15-060225-1 1792 4096 2 43.38 86.91% 0.605 19488.65 0.00132 0.00000 50
Random Writes
File Blk Num Avg Maximum Lat% Lat% CPU
Identifier Size Size Thr Rate (CPU%) Latency Latency >2s >10s Eff
---------------------------- ------ ----- --- ------ ------ --------- ----------- -------- -------- -----
2.6.15-060225-1 1792 4096 2 1.77 2.107% 0.258 203.21 0.00000 0.00000 84
tiobench --numruns 4 --dir /mnt/sdb/ --threads 4
No size specified, using 1792 MB
Run #4: /usr/bin/tiotest -t 4 -f 448 -r 1000 -b 4096 -d /mnt/sdb/ -T
Sequential Reads
File Blk Num Avg Maximum Lat% Lat% CPU
Identifier Size Size Thr Rate (CPU%) Latency Latency >2s >10s Eff
---------------------------- ------ ----- --- ------ ------ --------- ----------- -------- -------- -----
2.6.15-060225-1 1792 4096 4 27.42 26.18% 2.242 3291.54 0.00000 0.00000 105
Random Reads
File Blk Num Avg Maximum Lat% Lat% CPU
Identifier Size Size Thr Rate (CPU%) Latency Latency >2s >10s Eff
---------------------------- ------ ----- --- ------ ------ --------- ----------- -------- -------- -----
2.6.15-060225-1 1792 4096 4 0.68 1.536% 87.880 814.29 0.00000 0.00000 44
Sequential Writes
File Blk Num Avg Maximum Lat% Lat% CPU
Identifier Size Size Thr Rate (CPU%) Latency Latency >2s >10s Eff
---------------------------- ------ ----- --- ------ ------ --------- ----------- -------- -------- -----
2.6.15-060225-1 1792 4096 4 34.86 166.0% 1.423 21004.12 0.00392 0.00000 21
Random Writes
File Blk Num Avg Maximum Lat% Lat% CPU
Identifier Size Size Thr Rate (CPU%) Latency Latency >2s >10s Eff
---------------------------- ------ ----- --- ------ ------ --------- ----------- -------- -------- -----
2.6.15-060225-1 1792 4096 4 1.61 3.344% 3.710 1147.34 0.00000 0.00000 48
tiobench --numruns 4 --dir /mnt/sdb/ --threads 8
No size specified, using 1792 MB
Run #4: /usr/bin/tiotest -t 8 -f 224 -r 500 -b 4096 -d /mnt/sdb/ -T
Sequential Reads
File Blk Num Avg Maximum Lat% Lat% CPU
Identifier Size Size Thr Rate (CPU%) Latency Latency >2s >10s Eff
---------------------------- ------ ----- --- ------ ------ --------- ----------- -------- -------- -----
2.6.15-060225-1 1792 4096 8 24.03 44.76% 5.057 5837.55 0.00000 0.00000 54
Random Reads
File Blk Num Avg Maximum Lat% Lat% CPU
Identifier Size Size Thr Rate (CPU%) Latency Latency >2s >10s Eff
---------------------------- ------ ----- --- ------ ------ --------- ----------- -------- -------- -----
2.6.15-060225-1 1792 4096 8 0.80 2.896% 147.462 1021.28 0.00000 0.00000 28
Sequential Writes
File Blk Num Avg Maximum Lat% Lat% CPU
Identifier Size Size Thr Rate (CPU%) Latency Latency >2s >10s Eff
---------------------------- ------ ----- --- ------ ------ --------- ----------- -------- -------- -----
2.6.15-060225-1 1792 4096 8 33.91 321.8% 2.750 25215.68 0.02638 0.00000 11
Random Writes
File Blk Num Avg Maximum Lat% Lat% CPU
Identifier Size Size Thr Rate (CPU%) Latency Latency >2s >10s Eff
---------------------------- ------ ----- --- ------ ------ --------- ----------- -------- -------- -----
2.6.15-060225-1 1792 4096 8 1.68 9.160% 0.249 17.55 0.00000 0.00000 18
続いてmdによるRAID5、SATA4台のreiserfs場合〜
tiobench --numruns 4 --dir /home/ --threads 1
No size specified, using 1022 MB
Run #4: /usr/bin/tiotest -t 1 -f 1022 -r 4000 -b 4096 -d /home/ -T
Sequential Reads
File Blk Num Avg Maximum Lat% Lat% CPU
Identifier Size Size Thr Rate (CPU%) Latency Latency >2s >10s Eff
---------------------------- ------ ----- --- ------ ------ --------- ----------- -------- -------- -----
2.6.18-5-486 1022 4096 1 71.29 63.59% 0.217 218.35 0.00000 0.00000 112
Random Reads
File Blk Num Avg Maximum Lat% Lat% CPU
Identifier Size Size Thr Rate (CPU%) Latency Latency >2s >10s Eff
---------------------------- ------ ----- --- ------ ------ --------- ----------- -------- -------- -----
2.6.18-5-486 1022 4096 1 1.04 1.208% 15.055 141.74 0.00000 0.00000 86
Sequential Writes
File Blk Num Avg Maximum Lat% Lat% CPU
Identifier Size Size Thr Rate (CPU%) Latency Latency >2s >10s Eff
---------------------------- ------ ----- --- ------ ------ --------- ----------- -------- -------- -----
2.6.18-5-486 1022 4096 1 43.95 39.86% 0.352 3810.52 0.00000 0.00000 110
Random Writes
File Blk Num Avg Maximum Lat% Lat% CPU
Identifier Size Size Thr Rate (CPU%) Latency Latency >2s >10s Eff
---------------------------- ------ ----- --- ------ ------ --------- ----------- -------- -------- -----
2.6.18-5-486 1022 4096 1 1.43 0.760% 0.084 30.02 0.00000 0.00000 188
tiobench --numruns 4 --dir /home/ --threads 2
No size specified, using 1022 MB
Run #4: /usr/bin/tiotest -t 2 -f 511 -r 2000 -b 4096 -d /home/ -T
Sequential Reads
File Blk Num Avg Maximum Lat% Lat% CPU
Identifier Size Size Thr Rate (CPU%) Latency Latency >2s >10s Eff
---------------------------- ------ ----- --- ------ ------ --------- ----------- -------- -------- -----
2.6.18-5-486 1022 4096 2 65.50 96.41% 0.464 764.62 0.00000 0.00000 68
Random Reads
File Blk Num Avg Maximum Lat% Lat% CPU
Identifier Size Size Thr Rate (CPU%) Latency Latency >2s >10s Eff
---------------------------- ------ ----- --- ------ ------ --------- ----------- -------- -------- -----
2.6.18-5-486 1022 4096 2 1.50 2.681% 18.618 214.08 0.00000 0.00000 56
Sequential Writes
File Blk Num Avg Maximum Lat% Lat% CPU
Identifier Size Size Thr Rate (CPU%) Latency Latency >2s >10s Eff
---------------------------- ------ ----- --- ------ ------ --------- ----------- -------- -------- -----
2.6.18-5-486 1022 4096 2 45.45 82.75% 0.670 6621.71 0.00076 0.00000 55
Random Writes
File Blk Num Avg Maximum Lat% Lat% CPU
Identifier Size Size Thr Rate (CPU%) Latency Latency >2s >10s Eff
---------------------------- ------ ----- --- ------ ------ --------- ----------- -------- -------- -----
2.6.18-5-486 1022 4096 2 1.16 1.057% 0.124 145.55 0.00000 0.00000 110
tiobench --numruns 4 --dir /home/ --threads 4
No size specified, using 1022 MB
Run #4: /usr/bin/tiotest -t 4 -f 255 -r 1000 -b 4096 -d /home/ -T
Sequential Reads
File Blk Num Avg Maximum Lat% Lat% CPU
Identifier Size Size Thr Rate (CPU%) Latency Latency >2s >10s Eff
---------------------------- ------ ----- --- ------ ------ --------- ----------- -------- -------- -----
2.6.18-5-486 1022 4096 4 62.78 140.0% 0.947 1177.52 0.00000 0.00000 45
Random Reads
File Blk Num Avg Maximum Lat% Lat% CPU
Identifier Size Size Thr Rate (CPU%) Latency Latency >2s >10s Eff
---------------------------- ------ ----- --- ------ ------ --------- ----------- -------- -------- -----
2.6.18-5-486 1022 4096 4 2.18 5.916% 27.001 233.06 0.00000 0.00000 37
Sequential Writes
File Blk Num Avg Maximum Lat% Lat% CPU
Identifier Size Size Thr Rate (CPU%) Latency Latency >2s >10s Eff
---------------------------- ------ ----- --- ------ ------ --------- ----------- -------- -------- -----
2.6.18-5-486 1022 4096 4 46.23 166.5% 1.189 7490.56 0.00192 0.00000 28
Random Writes
File Blk Num Avg Maximum Lat% Lat% CPU
Identifier Size Size Thr Rate (CPU%) Latency Latency >2s >10s Eff
---------------------------- ------ ----- --- ------ ------ --------- ----------- -------- -------- -----
2.6.18-5-486 1022 4096 4 1.22 2.567% 0.521 486.34 0.00000 0.00000 47
tiobench --numruns 4 --dir /home/ --threads 8
No size specified, using 1022 MB
Run #4: /usr/bin/tiotest -t 8 -f 127 -r 500 -b 4096 -d /home/ -T
Sequential Reads
File Blk Num Avg Maximum Lat% Lat% CPU
Identifier Size Size Thr Rate (CPU%) Latency Latency >2s >10s Eff
---------------------------- ------ ----- --- ------ ------ --------- ----------- -------- -------- -----
2.6.18-5-486 1022 4096 8 61.42 231.0% 1.860 8310.28 0.00115 0.00000 27
Random Reads
File Blk Num Avg Maximum Lat% Lat% CPU
Identifier Size Size Thr Rate (CPU%) Latency Latency >2s >10s Eff
---------------------------- ------ ----- --- ------ ------ --------- ----------- -------- -------- -----
2.6.18-5-486 1022 4096 8 2.73 14.09% 39.358 403.94 0.00000 0.00000 19
Sequential Writes
File Blk Num Avg Maximum Lat% Lat% CPU
Identifier Size Size Thr Rate (CPU%) Latency Latency >2s >10s Eff
---------------------------- ------ ----- --- ------ ------ --------- ----------- -------- -------- -----
2.6.18-5-486 1022 4096 8 47.39 328.6% 2.192 19993.01 0.00922 0.00000 14
Random Writes
File Blk Num Avg Maximum Lat% Lat% CPU
Identifier Size Size Thr Rate (CPU%) Latency Latency >2s >10s Eff
---------------------------- ------ ----- --- ------ ------ --------- ----------- -------- -------- -----
2.6.18-5-486 1022 4096 8 1.13 5.121% 8.045 8028.87 0.07500 0.00000 22
もちろん各種チューニングによって結果は変わるはず。
と、しかしこれは、IOzoneみたいにグラフ化しにゃいと実に見にくいにゃ(しろよ)
ひとまず、SATAシングルドライブで同時2本程度は結構持つものの、4本ににゃった時点でかにゃり酷いことに。RAID5にしておけば、4本程度まではまず問題にゃいっていうかLatencyが低いまま押さえられてて負荷に強いことが見て取れる。
あとはRAID10をいろんにゃオプションで生成して実験してみるべきにゃんだがめんどくさいよにゃぁ