Dear I'm a IT. I use FIO test performance my Hard disk on system of my company. I searched about IOPS of hard disk on internet. And see that: Spin Speed Interface Average IOPS 5,900 rpm SATA 47 7,200 rpm SATA 75 10,000 rpm SATA / SAS 150 15,000 rpm SAS 175 So, when i use FIO measure my hardisk (western 500GB I showed my result: IOPS read=34271, IOPS write=1198. This my result so big. I can't understand value IOPS of Fio. I hope receiver your reply. Thanks you so much. testrw: (g=0): rw=rw, bs=4K-4K/4K-4K, ioengine=libaio, iodepth=8 fio 1.59 Starting 1 process testrw: Laying out IO file(s) (1 file(s) / 100MB) testrw: (groupid=0, jobs=1): err= 0: pid=8565 read : io=77180KB, bw=137087KB/s, iops=34271 , runt= 563msec slat (usec): min=1 , max=386 , avg= 3.57, stdev=15.60 clat (usec): min=4 , max=1453 , avg=155.63, stdev=126.97 lat (usec): min=5 , max=1456 , avg=159.35, stdev=130.95 bw (KB/s) : min=135464, max=135464, per=98.82%, avg=135464.00, stdev= 0.00 write: io=25220KB, bw=44796KB/s, iops=11198 , runt= 563msec slat (usec): min=35 , max=612 , avg=69.98, stdev=54.35 clat (usec): min=15 , max=1006 , avg=148.85, stdev=117.44 lat (usec): min=51 , max=1462 , avg=220.05, stdev=135.48 bw (KB/s) : min=44208, max=44208, per=98.69%, avg=44208.00, stdev= 0.00 -- To unsubscribe from this list: send the line "unsubscribe fio" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html