fio: (g=0): rw=randrw, bs=4K-256K/4K-256K, ioengine=libaio, iodepth=8 ... fio: (g=0): rw=randrw, bs=4K-256K/4K-256K, ioengine=libaio, iodepth=8 Starting 3 threads Threads: 3 Threads: 3 Threads: 3: [mmm] [12.0% done] [ 12316/ 5496 kb/s] [eta 00m:22s] Threads: 3: [mmm] [16.0% done] [ 15408/ 3992 kb/s] [eta 00m:21s] Threads: 3: [mmm] [20.0% done] [ 12536/ 4980 kb/s] [eta 00m:20s] Threads: 3: [mmm] [23.1% done] [ 7228/ 10856 kb/s] [eta 00m:20s] Threads: 3: [mmm] [25.9% done] [ 8136/ 6140 kb/s] [eta 00m:20s] Threads: 3: [mmm] [29.6% done] [ 15112/ 580 kb/s] [eta 00m:19s] Threads: 3: [mmm] [32.1% done] [ 6368/ 8024 kb/s] [eta 00m:19s] Threads: 3: [mmm] [34.5% done] [ 13364/ 2384 kb/s] [eta 00m:19s] Threads: 3: [mmm] [37.9% done] [ 10016/ 5060 kb/s] [eta 00m:18s] Threads: 3: [mmm] [41.4% done] [ 4880/ 9888 kb/s] [eta 00m:17s] Threads: 3: [mmm] [44.8% done] [ 7904/ 6936 kb/s] [eta 00m:16s] Threads: 3: [mmm] [46.7% done] [ 9180/ 3912 kb/s] [eta 00m:16s] Threads: 3: [mmm] [50.0% done] [ 6808/ 4804 kb/s] [eta 00m:15s] Threads: 3: [mmm] [53.3% done] [ 7040/ 5312 kb/s] [eta 00m:14s] Threads: 3: [mmm] [54.8% done] [ 5220/ 5096 kb/s] [eta 00m:14s] Threads: 3: [mmm] [58.1% done] [ 5580/ 4772 kb/s] [eta 00m:13s] Threads: 3: [mmm] [59.4% done] [ 4856/ 5060 kb/s] [eta 00m:13s] Threads: 3: [mmm] [60.6% done] [ 4452/ 5348 kb/s] [eta 00m:13s] Threads: 3: [mmm] [65.6% done] [ 10268/ 144 kb/s] [eta 00m:11s] Threads: 3: [VVV] [68.8% done] [ 15360/ 0 kb/s] [eta 00m:10s] Threads: 3: [VVV] [71.9% done] [ 20560/ 0 kb/s] [eta 00m:09s] Threads: 3: [VVV] [77.4% done] [ 16568/ 0 kb/s] [eta 00m:07s] Threads: 3: [VVV] [80.6% done] [ 21424/ 0 kb/s] [eta 00m:06s] Threads: 3: [VVV] [83.9% done] [ 17368/ 0 kb/s] [eta 00m:05s] Threads: 2: [_VV] [90.0% done] [ 18004/ 0 kb/s] [eta 00m:03s] fio: (groupid=0): err= 0: pid=17052 read : io=100MiB, bw=3,875KiB/s, runt= 27056msec slat (msec): min= 0, max= 5449, avg=871.92, stdev=1469.25 clat (msec): min= 0, max= 451, avg=81.79, stdev=80.82 bw (KiB/s) : min= 86, max=11463, per=38.50%, avg=4378.92, stdev=2947.43 write: io=35,440KiB, bw=1,680KiB/s, runt= 21597msec slat (msec): min= 0, max= 11, avg= 0.15, stdev= 0.90 clat (msec): min= 0, max= 1005, avg=123.49, stdev=144.90 bw (KiB/s) : min= 0, max= 5300, per=43.18%, avg=2242.96, stdev=1781.12 cpu : usr=3.33%, sys=0.18%, ctx=1865 IO depths : 1=0.1%, 2=0.2%, 4=13.6%, 8=86.0%, 16=0.0%, 32=0.0%, >=64=0.0% lat (msec): 2=0.8%, 4=0.5%, 10=4.5%, 20=16.7%, 50=23.7%, 100=19.8% lat (msec): 250=27.3%, 500=5.9%, 750=0.3%, 1000=0.4%, >=2000=0.0% fio: (groupid=0): err= 0: pid=17053 read : io=100MiB, bw=3,791KiB/s, runt= 27658msec slat (msec): min= 0, max= 7519, avg=1979.24, stdev=2599.57 clat (msec): min= 1, max= 589, avg=87.03, stdev=78.91 bw (KiB/s) : min= 163, max= 9917, per=39.25%, avg=4464.13, stdev=2907.44 write: io=40,204KiB, bw=2,007KiB/s, runt= 20505msec slat (msec): min= 0, max= 2, avg= 0.05, stdev= 0.24 clat (msec): min= 0, max= 881, avg=101.78, stdev=103.06 bw (KiB/s) : min= 0, max= 5907, per=53.35%, avg=2771.73, stdev=1968.80 cpu : usr=3.43%, sys=0.22%, ctx=1781 IO depths : 1=0.1%, 2=0.2%, 4=16.0%, 8=83.7%, 16=0.0%, 32=0.0%, >=64=0.0% lat (msec): 2=0.5%, 4=0.8%, 10=3.6%, 20=12.7%, 50=23.6%, 100=24.5% lat (msec): 250=28.4%, 500=5.5%, 750=0.2%, 1000=0.0%, >=2000=0.0% fio: (groupid=0): err= 0: pid=17054 read : io=100MiB, bw=3,796KiB/s, runt= 27621msec slat (msec): min= 0, max= 7034, avg=1535.39, stdev=2304.21 clat (msec): min= 3, max= 750, avg=96.15, stdev=86.93 bw (KiB/s) : min= 164, max= 9747, per=37.57%, avg=4273.31, stdev=2496.46 write: io=33,932KiB, bw=1,687KiB/s, runt= 20588msec slat (msec): min= 0, max= 2, avg= 0.03, stdev= 0.17 clat (msec): min= 0, max= 835, avg=100.34, stdev=92.57 bw (KiB/s) : min= 0, max= 7595, per=55.50%, avg=2883.10, stdev=2306.84 cpu : usr=3.37%, sys=0.25%, ctx=1788 IO depths : 1=0.1%, 2=0.2%, 4=11.7%, 8=88.0%, 16=0.0%, 32=0.0%, >=64=0.0% lat (msec): 2=0.8%, 4=0.2%, 10=2.9%, 20=11.0%, 50=22.8%, 100=24.2% lat (msec): 250=31.7%, 500=5.8%, 750=0.3%, 1000=0.1%, >=2000=0.0% Run status group 0 (all jobs): READ: io=300MiB, aggrb=11,373KiB/s, minb=3,791KiB/s, maxb=3,875KiB/s, mint=27056msec, maxt=27658msec WRITE: io=107MiB, aggrb=5,195KiB/s, minb=1,680KiB/s, maxb=2,007KiB/s, mint=27056msec, maxt=27658msec Disk stats (read/write): sda: ios=4881/1975, merge=1519/429, ticks=457356/239160, in_queue=696512, util=99.35% 2.84user 0.31system 0:28.00elapsed 11%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+0outputs (0major+2399minor)pagefaults 0swaps