fio: (g=0): rw=randrw, bs=4K-256K/4K-256K, ioengine=posixaio, iodepth=8 ... fio: (g=0): rw=randrw, bs=4K-256K/4K-256K, ioengine=posixaio, iodepth=8 Starting 3 threads Threads: 3 Threads: 3 Threads: 3: [FFF] [100.0% done] [ 656/ 26168 kb/s] [eta 00m:00s] Threads: 3: [FFF] [100.0% done] [ 0/ 0 kb/s] [eta 00m:00s] Threads: 3: [FFF] [100.0% done] [ 0/ 0 kb/s] [eta 00m:00s] Threads: 3: [FFF] [100.0% done] [ 0/ 0 kb/s] [eta 00m:00s] Threads: 3: [FFF] [100.0% done] [ 0/ 0 kb/s] [eta 00m:00s] Threads: 3: [FFF] [100.0% done] [ 0/ 0 kb/s] [eta 00m:00s] Threads: 3: [FFF] [100.0% done] [ 0/ 0 kb/s] [eta 00m:00s] Threads: 3: [FFF] [100.0% done] [ 0/ 0 kb/s] [eta 00m:00s] Threads: 3: [FFF] [100.0% done] [ 0/ 0 kb/s] [eta 00m:00s] Threads: 3: [FFF] [100.0% done] [ 0/ 0 kb/s] [eta 00m:00s] Threads: 3: [FFF] [100.0% done] [ 0/ 0 kb/s] [eta 00m:00s] Threads: 3: [FFF] [100.0% done] [ 0/ 0 kb/s] [eta 00m:00s] Threads: 3: [VVV] [68.2% done] [ 10608/ 0 kb/s] [eta 00m:07s] Threads: 3: [VVV] [69.6% done] [ 34748/ 0 kb/s] [eta 00m:07s] Threads: 3: [VVV] [77.3% done] [ 31340/ 0 kb/s] [eta 00m:05s] Threads: 3: [VVV] [81.8% done] [ 28552/ 0 kb/s] [eta 00m:04s] Threads: 3: [VVV] [90.5% done] [ 40435/ 0 kb/s] [eta 00m:02s] Threads: 3: [VVV] [100.0% done] [ 37904/ 0 kb/s] [eta 00m:00s] Threads: 3: [VVV] [100.0% done] [ 33076/ 0 kb/s] [eta 00m:00s] Threads: 3: [VVV] [100.0% done] [ 39492/ 0 kb/s] [eta 00m:00s] Threads: 1: [V__] [100.0% done] [ 34888/ 0 kb/s] [eta 00m:00s] fio: (groupid=0): err= 0: pid=11361 read : io=100MiB, bw=4,375KiB/s, runt= 23967msec clat (msec): min= 0, max= 670, avg=43.09, stdev=96.86 bw (KiB/s) : min= 6, max=23922, per=73.38%, avg=9630.94, stdev=6562.90 write: io=100MiB, bw=7,237KiB/s, runt= 14488msec slat (msec): min= 0, max= 1, avg= 0.00, stdev= 0.03 clat (msec): min= 0, max= 31, avg= 1.01, stdev= 3.50 bw (KiB/s) : min= 0, max=86786, per=226.29%, avg=48723.00, stdev=44364.17 cpu : usr=4.62%, sys=1.59%, ctx=6068 IO depths : 1=12.1%, 2=47.7%, 4=31.2%, 8=8.9%, 16=0.0%, 32=0.0%, >=64=0.0% lat (msec): 2=47.8%, 4=0.5%, 10=31.6%, 20=10.4%, 50=2.9%, 100=0.3% lat (msec): 250=4.4%, 500=1.6%, 750=0.4%, 1000=0.0%, >=2000=0.0% fio: (groupid=0): err= 0: pid=11362 read : io=100MiB, bw=4,535KiB/s, runt= 23118msec slat (msec): min= 0, max= 0, avg= 0.00, stdev= 0.00 clat (msec): min= 0, max= 711, avg=46.66, stdev=96.40 bw (KiB/s) : min= 1, max=20815, per=71.39%, avg=9369.56, stdev=6169.83 write: io=99MiB, bw=7,159KiB/s, runt= 14492msec slat (msec): min= 0, max= 0, avg= 0.00, stdev= 0.00 clat (msec): min= 0, max= 359, avg= 1.18, stdev=15.11 bw (KiB/s) : min= 0, max=32917, per=76.44%, avg=16458.50, stdev=23275.83 cpu : usr=3.63%, sys=1.56%, ctx=5171 IO depths : 1=1.7%, 2=57.5%, 4=30.9%, 8=9.8%, 16=0.0%, 32=0.0%, >=64=0.0% lat (msec): 2=50.5%, 4=0.4%, 10=24.6%, 20=13.3%, 50=2.9%, 100=0.4% lat (msec): 250=5.6%, 500=1.7%, 750=0.3%, 1000=0.0%, >=2000=0.0% fio: (groupid=0): err= 0: pid=11363 read : io=100MiB, bw=4,458KiB/s, runt= 23517msec slat (msec): min= 0, max= 0, avg= 0.00, stdev= 0.00 clat (msec): min= 0, max= 583, avg=47.41, stdev=94.83 bw (KiB/s) : min= 12, max=20480, per=64.88%, avg=8515.15, stdev=6485.05 write: io=99MiB, bw=7,140KiB/s, runt= 14484msec slat (msec): min= 0, max= 1, avg= 0.00, stdev= 0.02 clat (msec): min= 0, max= 407, avg= 2.45, stdev=19.11 bw (KiB/s) : min= 0, max=56804, per=128.02%, avg=27563.25, stdev=24026.08 cpu : usr=4.51%, sys=2.01%, ctx=6147 IO depths : 1=11.1%, 2=45.9%, 4=32.4%, 8=10.6%, 16=0.0%, 32=0.0%, >=64=0.0% lat (msec): 2=48.1%, 4=0.2%, 10=25.8%, 20=13.0%, 50=4.1%, 100=0.6% lat (msec): 250=6.0%, 500=1.7%, 750=0.4%, 1000=0.0%, >=2000=0.0% Run status group 0 (all jobs): READ: io=300MiB, aggrb=13,125KiB/s, minb=4,375KiB/s, maxb=4,535KiB/s, mint=23118msec, maxt=23967msec WRITE: io=298MiB, aggrb=21,531KiB/s, minb=7,140KiB/s, maxb=7,237KiB/s, mint=23118msec, maxt=23967msec Disk stats (read/write): sda: ios=2892/2019, merge=1135/74008, ticks=98552/1954332, in_queue=2077296, util=97.21% 3.07user 1.27system 0:24.43elapsed 17%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+0outputs (0major+2471minor)pagefaults 0swaps