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] [13.6% done] [  9229/ 10933 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [18.2% done] [ 15062/  6910 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [22.7% done] [ 20037/     0 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [26.1% done] [  9188/  8818 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [30.4% done] [ 18889/   284 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [34.8% done] [ 15754/  3527 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [37.5% done] [  9675/  6530 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [40.0% done] [  7118/  8375 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [44.0% done] [ 11604/  4588 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [46.2% done] [ 10311/  3473 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [50.0% done] [  6268/  7008 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [51.9% done] [ 10547/  2342 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [55.6% done] [  7073/  4523 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [57.1% done] [  5576/  4327 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [58.6% done] [  7582/  3258 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [60.0% done] [  1269/  6438 kb/s] [eta 00m:12s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=18466, got signal=6
Threads: 2: [m_m] [61.3% done] [  4132/  4051 kb/s] [eta 00m:12s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=18467, got signal=6
Threads: 1: [m__] [62.5% done] [  3742/  3388 kb/s] [eta 00m:12s]
Threads: 1: [m__] [67.7% done] [   382/  5600 kb/s] [eta 00m:10s]
Threads: 1: [V__] [81.5% done] [ 23197/     0 kb/s] [eta 00m:05s]
fio: (groupid=0): err= 0: pid=18465
  read : io=100MiB, bw=4,594KiB/s, runt= 22770msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  523, avg=55.87, stdev=59.40
    bw (KiB/s) : min=  113, max=34125, per=51.28%, avg=5790.11, stdev=7893.08
  write: io=46,200KiB, bw=2,231KiB/s, runt= 21199msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=   14, max=  463, avg=95.24, stdev=47.57
    bw (KiB/s) : min=    0, max= 8159, per=55.01%, avg=2708.64, stdev=2371.36
  cpu          : usr=0.49%, sys=0.35%, ctx=8129
  IO depths    : 1=0.2%, 2=2.4%, 4=23.8%, 8=73.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.8%, 4=1.9%, 10=15.0%, 20=11.9%, 50=16.1%, 100=21.5%
     lat (msec): 250=31.7%, 500=0.6%, 750=0.2%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=18466
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=6.0%, 8=93.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=0.9%, 50=10.2%, 100=46.3%
     lat (msec): 250=42.0%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=18467
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.2%, 4=5.5%, 8=94.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.1%, 10=0.1%, 20=1.6%, 50=11.1%, 100=45.5%
     lat (msec): 250=40.8%, 500=0.4%, 750=0.2%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=245MiB, aggrb=11,291KiB/s, minb=0KiB/s, maxb=4,594KiB/s, mint=0msec, maxt=22770msec
  WRITE: io=100MiB, aggrb=4,924KiB/s, minb=0KiB/s, maxb=2,231KiB/s, mint=0msec, maxt=22770msec

Disk stats (read/write):
  cciss!c0d0: ios=4644/2305, merge=757/123, ticks=47580/31268, in_queue=78836, util=98.89%
0.35user 0.48system 0:23.28elapsed 3%CPU (0avgtext+0avgdata 0maxresident)k
502232inputs+203936outputs (0major+2451minor)pagefaults 0swaps