sysbench fileio --file-total-size=2G --file-num=100 --file-test-mode=rndrw run sysbench 1.0.17 (using system LuaJIT 2.0.4) Running the test with following options: Number of threads: 1 Initializing random number generator from current time Extra file open flags: (none) 100 files, 20.48MiB each 2GiB total file size Block size 16KiB Number of IO requests: 0 Read/Write ratio for combined random IO test: 1.50 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 Initializing worker threads... Threads started! File operations: reads/s: 11.72 writes/s: 7.81 fsyncs/s: 22.07 Throughput: read, MiB/s: 0.18 written, MiB/s: 0.12 General statistics: total time: 10.2376s total number of events: 326 Latency (ms): min: 0.01 avg: 30.67 max: 573.37 95th percentile: 147.61 sum: 9999.00 Threads fairness: events (avg/stddev): 326.0000/0.00 execution time (avg/stddev): 9.9990/0.00