sysbench --test=fileio --file-total-size=35G --file-test-mode=rndrw --init-rng=on --max-time=300 --max-requests=0 run
sysbench 0.4.12:  multi-threaded system evaluation benchmark

Running the test with following options:
Number of threads: 1
Initializing random number generator from timer.


Extra file open flags: 0
128 files, 280Mb each
35Gb total file size
Block size 16Kb
Number of random requests for random IO: 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
Threads started!
Time limit exceeded, exiting...
Done.

Operations performed:  12882 Read, 8588 Write, 27392 Other = 48862 Total
Read 201.28Mb  Written 134.19Mb  Total transferred 335.47Mb  (1.1182Mb/sec)
   71.57 Requests/sec executed

Test execution summary:
    total time:                          300.0028s
    total number of events:              21470
    total time taken by event execution: 151.0190
    per-request statistics:
         min:                                  0.01ms
         avg:                                  7.03ms
         max:                                 45.95ms
         approx.  95 percentile:              16.19ms

Threads fairness:
    events (avg/stddev):           21470.0000/0.00
    execution time (avg/stddev):   151.0190/0.00