SysbenchディスクIOテストの出力結果解読
6603 ワード
データの準備+ランダム読み書きテスト
出力結果:#後は解読コメント
sysbench --num-threads=16 --test=fileio --file-total-size=3G --file-test-mode=rndrw prepare
sysbench --num-threads=16 --test=fileio --file-total-size=3G --file-test-mode=rndrw run
出力結果:#後は解読コメント
root@wuzhou:/home/meizu/sysbench/sysbench-0.4.12# sysbench --num-threads=16 --test=fileio --file-total-size=3G --file-test-mode=rndrw run
sysbench 0.4.12: multi-threaded system evaluation benchmark
Running the test with following options:
Number of threads: 16 #16
Extra file open flags: 0
128 files, 24Mb each #3G 128 , 24Mb
3Gb total file size
Block size 16Kb # 16Kb Number of random requests for random IO: 10000 # IO 10000
Read/Write ratio for combined random IO test: 1.50 # 1.5:1
Periodic FSYNC enabled, calling fsync() each 100 requests.
Calling fsync() at the end of test, Enabled.
Using synchronous I/O mode
Doing random r/w test #
Threads started!
Done.
Operations performed: 6010 Read, 3998 Write, 12806 Other = 22814 Total
Read 93.906Mb Written 62.469Mb Total transferred 156.38Mb (122.03Mb/sec) # IO (122.03Mb/sec) 7810.19 Requests/sec executed #7810.19/s IOPC。 IO block, block=16K,7810*16/1024=122.03Mb. IO IOPS。
Test execution summary:
total time: 1.2814s
total number of events: 10008
total time taken by event execution: 15.8660
per-request statistics:
min: 0.00ms
avg: 1.59ms
max: 14.04ms
approx. 95 percentile: 6.04ms
Threads fairness:
events (avg/stddev): 625.5000/24.21
execution time (avg/stddev): 0.9916/0.01