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: [mmm] [8.6% done] [ 10052/  3240 kb/s] [eta 00m:32s]
Threads: 3: [mmm] [10.3% done] [  7516/  4600 kb/s] [eta 00m:35s]
Threads: 3: [mmm] [12.8% done] [  9492/  3112 kb/s] [eta 00m:34s]
Threads: 3: [mmm] [15.8% done] [  7684/  6316 kb/s] [eta 00m:32s]
Threads: 3: [mmm] [18.9% done] [  6504/  6384 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [21.1% done] [  6584/  3932 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [23.7% done] [  6564/  4560 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [26.3% done] [  6480/  3840 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [28.9% done] [  6008/  5208 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [30.8% done] [  7656/   808 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [33.3% done] [  6248/  5420 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [35.9% done] [  3060/  5884 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [37.5% done] [  1344/  9520 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [40.0% done] [  4376/  5756 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [42.5% done] [  6472/  2244 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [43.9% done] [  5328/  2868 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [46.3% done] [  3420/  4924 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [47.6% done] [  5424/  2808 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [48.8% done] [  3884/  4140 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [51.2% done] [  5060/  2980 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [53.5% done] [  5268/  1525 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [54.5% done] [  5355/  1605 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [55.6% done] [  4254/  2669 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [56.5% done] [  3307/  3226 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [57.4% done] [  2566/  5107 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [57.1% done] [  2677/  5250 kb/s] [eta 00m:21s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=13689, got signal=6
Threads: 2: [_mm] [59.2% done] [  2340/  3628 kb/s] [eta 00m:20s]
Threads: 2: [_mm] [61.2% done] [  2482/  5103 kb/s] [eta 00m:19s]
Threads: 2: [_mm] [63.3% done] [  6001/   893 kb/s] [eta 00m:18s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=13690, got signal=6
Threads: 1: [__m] [66.7% done] [  6058/   642 kb/s] [eta 00m:16s]
Threads: 1: [__V] [76.7% done] [ 13214/  1808 kb/s] [eta 00m:10s]
Threads: 1: [__V] [87.2% done] [ 18289/     0 kb/s] [eta 00m:05s]
fio: (groupid=0): err= 0: pid=13689
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=1.0%, 4=17.0%, 8=81.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.4%, 4=0.4%, 10=0.5%, 20=6.1%, 50=14.7%, 100=8.5%
     lat (msec): 250=63.0%, 500=6.1%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=13690
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.4%, 4=11.4%, 8=88.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.0%, 10=0.3%, 20=1.9%, 50=20.6%, 100=4.9%
     lat (msec): 250=60.0%, 500=11.1%, 750=0.7%, 1000=0.2%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=13691
  read : io=100MiB, bw=2,947KiB/s, runt= 35565msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    3, max=  823, avg=108.97, stdev=109.64
    bw (KiB/s) : min=   47, max=22183, per=57.13%, avg=3623.82, stdev=5235.29
  write: io=49,996KiB, bw=1,561KiB/s, runt= 32789msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  819, avg=136.96, stdev=89.22
    bw (KiB/s) : min=    0, max= 6842, per=53.37%, avg=2280.47, stdev=1880.59
  cpu          : usr=0.03%, sys=0.30%, ctx=10987
  IO depths    : 1=0.4%, 2=1.3%, 4=25.0%, 8=73.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.2%, 4=0.8%, 10=2.0%, 20=13.8%, 50=25.4%, 100=4.4%
     lat (msec): 250=45.8%, 500=6.3%, 750=0.8%, 1000=0.1%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=215MiB, aggrb=6,343KiB/s, minb=0KiB/s, maxb=2,947KiB/s, mint=35565msec, maxt=35565msec
  WRITE: io=134MiB, aggrb=4,273KiB/s, minb=0KiB/s, maxb=1,561KiB/s, mint=35565msec, maxt=35565msec

Disk stats (read/write):
  sda: ios=3959/2383, merge=611/385, ticks=79208/43568, in_queue=122776, util=99.03%
0.15user 0.38system 0:36.00elapsed 1%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2508minor)pagefaults 0swaps