Comment 12 for bug 1616830

In addition, I tried 14.04.4 with 4.2.0-27-generic, result is same.,.

Operations performed: 15420 Read, 10280 Write, 32818 Other = 58518 Total
Read 240.94Mb Written 160.62Mb Total transferred 401.56Mb (1.3385Mb/sec)
   85.67 Requests/sec executed

Test execution summary:
    total time: 300.0019s
    total number of events: 25700
    total time taken by event execution: 181.3283
    per-request statistics:
         min: 0.01ms
         avg: 7.06ms
         max: 117.32ms
         approx. 95 percentile: 17.33ms

Threads fairness:
    events (avg/stddev): 25700.0000/0.00
    execution time (avg/stddev): 181.3283/0.00