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] [ 17872/ 1516 kb/s] [eta 00m:22s] Threads: 3: [mmm] [16.7% done] [ 13616/ 7416 kb/s] [eta 00m:20s] Threads: 3: [mmm] [20.8% done] [ 14808/ 3148 kb/s] [eta 00m:19s] Threads: 3: [mmm] [24.0% done] [ 18368/ 0 kb/s] [eta 00m:19s] Threads: 3: [mmm] [26.9% done] [ 8420/ 5465 kb/s] [eta 00m:19s] Threads: 3: [mmm] [30.8% done] [ 8024/ 7476 kb/s] [eta 00m:18s] Threads: 3: [mmm] [34.6% done] [ 4064/ 10444 kb/s] [eta 00m:17s] Threads: 3: [mmm] [37.0% done] [ 8748/ 6288 kb/s] [eta 00m:17s] Threads: 3: [mmm] [40.7% done] [ 13536/ 464 kb/s] [eta 00m:16s] Threads: 3: [mmm] [42.9% done] [ 9452/ 5584 kb/s] [eta 00m:16s] Threads: 3: [mmm] [46.4% done] [ 8432/ 5216 kb/s] [eta 00m:15s] Threads: 3: [mmm] [48.3% done] [ 6528/ 5364 kb/s] [eta 00m:15s] Threads: 3: [mmm] [51.7% done] [ 6376/ 5568 kb/s] [eta 00m:14s] Threads: 3: [mmm] [53.3% done] [ 10295/ 1536 kb/s] [eta 00m:14s] Threads: 3: [mmm] [56.7% done] [ 6793/ 3335 kb/s] [eta 00m:13s] Threads: 3: [mmm] [58.1% done] [ 6927/ 3284 kb/s] [eta 00m:13s] Threads: 3: [mmm] [59.4% done] [ 6203/ 4040 kb/s] [eta 00m:13s] Threads: 3: [mmm] [62.5% done] [ 8723/ 1146 kb/s] [eta 00m:12s] Threads: 3: [mmm] [63.6% done] [ 6967/ 1725 kb/s] [eta 00m:12s] Threads: 3: [mVm] [66.7% done] [ 14820/ 31 kb/s] [eta 00m:11s] Threads: 3: [mVm] [67.6% done] [ 14139/ 0 kb/s] [eta 00m:11s] Threads: 2: [V_V] [68.6% done] [ 18140/ 0 kb/s] [eta 00m:11s] Threads: 2: [V_V] [71.4% done] [ 19790/ 0 kb/s] [eta 00m:10s] Threads: 2: [V_V] [78.8% done] [ 20657/ 0 kb/s] [eta 00m:07s] fio: (groupid=0): err= 0: pid=15499 read : io=100MiB, bw=3,809KiB/s, runt= 27525msec slat (msec): min= 0, max= 4252, avg=790.14, stdev=1390.98 clat (msec): min= 1, max= 883, avg=89.53, stdev=92.60 bw (KiB/s) : min= 48, max=13764, per=38.50%, avg=4399.74, stdev=3692.76 write: io=29,612KiB, bw=1,304KiB/s, runt= 23252msec slat (msec): min= 0, max= 4, avg= 0.14, stdev= 0.56 clat (msec): min= 0, max= 997, avg=136.19, stdev=161.94 bw (KiB/s) : min= 0, max= 5917, per=50.80%, avg=2255.82, stdev=2026.19 cpu : usr=3.52%, sys=0.28%, ctx=1764 IO depths : 1=0.1%, 2=0.2%, 4=12.7%, 8=87.0%, 16=0.0%, 32=0.0%, >=64=0.0% lat (msec): 2=0.7%, 4=0.5%, 10=4.1%, 20=14.7%, 50=19.2%, 100=22.8% lat (msec): 250=32.5%, 500=4.2%, 750=0.4%, 1000=0.9%, >=2000=0.0% fio: (groupid=0): err= 0: pid=15500 read : io=100MiB, bw=4,359KiB/s, runt= 24050msec slat (msec): min= 0, max= 2988, avg=626.97, stdev=950.08 clat (msec): min= 2, max= 813, avg=75.90, stdev=71.82 bw (KiB/s) : min= 98, max=15119, per=40.79%, avg=4662.00, stdev=3503.83 write: io=33,204KiB, bw=1,580KiB/s, runt= 21518msec slat (msec): min= 0, max= 8, avg= 0.08, stdev= 0.60 clat (msec): min= 0, max= 653, avg=91.13, stdev=93.71 bw (KiB/s) : min= 0, max=10984, per=66.98%, avg=2974.70, stdev=2834.66 cpu : usr=4.21%, sys=0.28%, ctx=1940 IO depths : 1=0.1%, 2=0.4%, 4=12.7%, 8=86.8%, 16=0.0%, 32=0.0%, >=64=0.0% lat (msec): 2=1.6%, 4=0.5%, 10=4.1%, 20=12.5%, 50=26.4%, 100=26.7% lat (msec): 250=24.3%, 500=3.5%, 750=0.2%, 1000=0.0%, >=2000=0.0% fio: (groupid=0): err= 0: pid=15501 read : io=100MiB, bw=3,809KiB/s, runt= 27526msec slat (msec): min= 0, max= 6254, avg=1368.82, stdev=2099.42 clat (msec): min= 3, max= 824, avg=80.63, stdev=72.94 bw (KiB/s) : min= 18, max=20602, per=42.04%, avg=4804.69, stdev=4139.06 write: io=38,048KiB, bw=1,856KiB/s, runt= 20983msec slat (msec): min= 0, max= 9, avg= 0.12, stdev= 0.69 clat (msec): min= 0, max= 846, avg=123.15, stdev=127.80 bw (KiB/s) : min= 0, max= 7849, per=66.24%, avg=2941.74, stdev=2314.84 cpu : usr=3.53%, sys=0.29%, ctx=1816 IO depths : 1=0.1%, 2=0.2%, 4=9.2%, 8=90.5%, 16=0.0%, 32=0.0%, >=64=0.0% lat (msec): 2=1.3%, 4=0.5%, 10=3.1%, 20=10.8%, 50=22.4%, 100=28.8% lat (msec): 250=28.3%, 500=4.0%, 750=0.5%, 1000=0.2%, >=2000=0.0% Run status group 0 (all jobs): READ: io=300MiB, aggrb=11,428KiB/s, minb=3,809KiB/s, maxb=4,359KiB/s, mint=24050msec, maxt=27526msec WRITE: io=99MiB, aggrb=4,441KiB/s, minb=1,304KiB/s, maxb=1,856KiB/s, mint=24050msec, maxt=27526msec Disk stats (read/write): sda: ios=5156/1719, merge=1264/300, ticks=445396/211228, in_queue=656624, util=98.71% 3.01user 0.29system 0:28.08elapsed 11%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+0outputs (0major+2384minor)pagefaults 0swaps