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] [ 13698/ 10662 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [18.2% done] [  8244/ 14455 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [21.7% done] [ 14695/  5983 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [26.1% done] [ 11531/  7695 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [30.4% done] [ 12292/  6337 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [34.8% done] [ 11348/  7004 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [37.5% done] [ 10049/  7436 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [41.7% done] [  6735/  6613 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [44.0% done] [ 13097/  1883 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [46.2% done] [  9078/  3892 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [48.1% done] [  7952/  6577 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [51.9% done] [  7151/  3604 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [53.6% done] [  8078/  3075 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [55.2% done] [  7862/  2921 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [58.6% done] [  6524/  3428 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [60.0% done] [  7378/  2111 kb/s] [eta 00m:12s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=7532, got signal=6
Threads: 2: [mm_] [61.3% done] [  6233/  1507 kb/s] [eta 00m:12s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=7531, got signal=6
Threads: 1: [m__] [62.5% done] [   105/  5861 kb/s] [eta 00m:12s]
Threads: 1: [m__] [65.6% done] [     0/  5912 kb/s] [eta 00m:11s]
Threads: 1: [V__] [78.6% done] [ 14978/  2702 kb/s] [eta 00m:06s]
Threads: 1: [V__] [100.0% done] [ 40073/     0 kb/s] [eta 00m:00s]
fio: (groupid=0): err= 0: pid=7530
  read : io=100MiB, bw=4,531KiB/s, runt= 23117msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  615, avg=46.69, stdev=57.22
    bw (KiB/s) : min=    5, max=40026, per=66.17%, avg=7079.81, stdev=11084.63
  write: io=55,736KiB, bw=2,644KiB/s, runt= 21584msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=   19, max=  583, avg=92.69, stdev=56.24
    bw (KiB/s) : min=    0, max= 7630, per=53.95%, avg=3099.14, stdev=2172.99
  cpu          : usr=0.66%, sys=0.71%, ctx=8499
  IO depths    : 1=0.3%, 2=4.1%, 4=26.8%, 8=68.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=1.0%, 4=3.9%, 10=19.9%, 20=9.5%, 50=16.3%, 100=19.4%
     lat (msec): 250=29.1%, 500=0.5%, 750=0.2%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=7531
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=4.7%, 8=95.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=0.0%, 50=9.9%, 100=49.1%
     lat (msec): 250=39.6%, 500=0.8%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=7532
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=7.0%, 8=92.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=1.7%, 50=8.7%, 100=54.1%
     lat (msec): 250=34.9%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=236MiB, aggrb=10,700KiB/s, minb=0KiB/s, maxb=4,531KiB/s, mint=0msec, maxt=23117msec
  WRITE: io=118MiB, aggrb=5,744KiB/s, minb=0KiB/s, maxb=2,644KiB/s, mint=0msec, maxt=23117msec

Disk stats (read/write):
  cciss!c0d0: ios=4392/2494, merge=661/249, ticks=39200/35864, in_queue=75060, util=98.05%
0.30user 0.58system 0:23.61elapsed 3%CPU (0avgtext+0avgdata 0maxresident)k
483352inputs+242200outputs (0major+2455minor)pagefaults 0swaps