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] [13.0% done] [ 14140/  6542 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [18.2% done] [ 11779/  8289 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [21.7% done] [ 18625/  1147 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [26.1% done] [ 10536/  7322 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [30.4% done] [ 12560/  4677 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [33.3% done] [  8919/  7749 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [37.5% done] [  9302/  7402 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [40.0% done] [  9973/  6320 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [44.0% done] [ 16363/     0 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [48.0% done] [ 12584/  3193 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [50.0% done] [ 10573/  3750 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [51.9% done] [  9851/  2277 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [55.6% done] [  7386/  3721 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [57.1% done] [  5554/  4998 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [58.6% done] [  4832/  4112 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [60.0% done] [  5039/  4246 kb/s] [eta 00m:12s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=12194, got signal=6
Threads: 2: [m_m] [61.3% done] [  6739/  1004 kb/s] [eta 00m:12s]
Threads: 2: [m_m] [62.5% done] [  1915/  4962 kb/s] [eta 00m:12s]
Threads: 2: [V_m] [65.6% done] [  2746/  3409 kb/s] [eta 00m:11s]
Threads: 2: [V_m] [64.7% done] [ 16457/   841 kb/s] [eta 00m:12s]
Threads: 1: [__m] [67.6% done] [ 13528/   178 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=12195, got signal=6

fio: (groupid=0): err= 0: pid=12193
  read : io=100MiB, bw=4,598KiB/s, runt= 22736msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  582, avg=76.62, stdev=51.39
    bw (KiB/s) : min=   50, max=19698, per=47.88%, avg=5222.97, stdev=4546.31
  write: io=26,680KiB, bw=1,300KiB/s, runt= 21003msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=   31, max=  203, avg=107.24, stdev=33.82
    bw (KiB/s) : min=    0, max= 6831, per=50.40%, avg=2241.59, stdev=2233.95
  cpu          : usr=0.30%, sys=0.26%, ctx=7746
  IO depths    : 1=0.1%, 2=0.7%, 4=13.2%, 8=86.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.4%, 10=2.4%, 20=6.1%, 50=16.5%, 100=38.2%
     lat (msec): 250=35.4%, 500=0.2%, 750=0.2%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=12194
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.3%, 4=7.2%, 8=92.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.2%, 4=0.0%, 10=0.4%, 20=2.5%, 50=10.4%, 100=43.8%
     lat (msec): 250=42.3%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=12195
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.3%, 4=4.8%, 8=94.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.2%, 10=0.1%, 20=1.6%, 50=7.7%, 100=39.3%
     lat (msec): 250=48.5%, 500=1.0%, 750=0.8%, 1000=0.3%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=237MiB, aggrb=10,908KiB/s, minb=0KiB/s, maxb=4,598KiB/s, mint=0msec, maxt=22736msec
  WRITE: io=91,232KiB, aggrb=4,448KiB/s, minb=0KiB/s, maxb=1,300KiB/s, mint=0msec, maxt=22736msec

Disk stats (read/write):
  cciss!c0d0: ios=4534/2050, merge=788/158, ticks=51528/33272, in_queue=84796, util=97.95%
0.21user 0.67system 0:23.79elapsed 3%CPU (0avgtext+0avgdata 0maxresident)k
484480inputs+182496outputs (0major+2451minor)pagefaults 0swaps