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: [Fmm] [33.3% done] [ 15323/ 38745 kb/s] [eta 00m:06s]
Threads: 3: [Fmm] [36.4% done] [  4238/     0 kb/s] [eta 00m:07s]
Threads: 3: [Fmm] [41.7% done] [  3579/  9053 kb/s] [eta 00m:07s]
Threads: 3: [FFm] [46.2% done] [  2190/ 35173 kb/s] [eta 00m:07s]
Threads: 3: [FFm] [46.7% done] [  1101/     0 kb/s] [eta 00m:08s]
Threads: 3: [FFm] [57.1% done] [  1032/ 11467 kb/s] [eta 00m:06s]
Threads: 3: [FFm] [56.2% done] [   849/     0 kb/s] [eta 00m:07s]
Threads: 3: [FFF] [100.0% done] [  1089/ 17952 kb/s] [eta 00m:00s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=29374, got signal=6
Threads: 2: [FF_] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [FF_] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [VV_] [72.2% done] [ 26046/     0 kb/s] [eta 00m:05s]
Threads: 2: [VV_] [100.0% done] [ 73098/     0 kb/s] [eta 00m:00s]
Threads: 2: [VV_] [100.0% done] [ 64646/     0 kb/s] [eta 00m:00s]
fio: (groupid=0): err= 0: pid=29372
  read : io=100MiB, bw=6,825KiB/s, runt= 15362msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  232, avg=14.02, stdev=35.28
    bw (KiB/s) : min=    0, max=43585, per=136.00%, avg=21609.67, stdev=18038.74
  write: io=92,636KiB, bw=7,545KiB/s, runt= 12572msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=   92, avg= 1.19, stdev= 5.35
    bw (KiB/s) : min=    0, max=60020, per=179.64%, avg=35885.25, stdev=28979.80
  cpu          : usr=13.10%, sys=4.97%, ctx=5652
  IO depths    : 1=2.8%, 2=63.8%, 4=24.9%, 8=8.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=52.8%, 4=22.2%, 10=17.9%, 20=1.1%, 50=0.7%, 100=2.0%
     lat (msec): 250=3.0%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=29373
  read : io=100MiB, bw=6,907KiB/s, runt= 15181msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  299, avg=29.40, stdev=57.35
    bw (KiB/s) : min=    9, max=42984, per=70.29%, avg=11169.87, stdev=14602.98
  write: io=83,832KiB, bw=6,828KiB/s, runt= 12572msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  202, avg= 1.29, stdev=11.11
    bw (KiB/s) : min=    0, max=56623, per=112.63%, avg=22499.00, stdev=25616.65
  cpu          : usr=11.28%, sys=4.87%, ctx=8774
  IO depths    : 1=37.5%, 2=24.4%, 4=23.2%, 8=14.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=50.0%, 4=15.9%, 10=18.4%, 20=2.9%, 50=1.0%, 100=5.8%
     lat (msec): 250=5.1%, 500=0.9%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=29374
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=10.7%, 2=60.9%, 4=4.4%, 8=24.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=61.6%, 4=9.2%, 10=1.6%, 20=0.1%, 50=1.8%, 100=12.0%
     lat (msec): 250=6.7%, 500=6.9%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=233MiB, aggrb=15,890KiB/s, minb=0KiB/s, maxb=6,907KiB/s, mint=0msec, maxt=15362msec
  WRITE: io=240MiB, aggrb=19,976KiB/s, minb=0KiB/s, maxb=7,545KiB/s, mint=0msec, maxt=15362msec

Disk stats (read/write):
  cciss!c0d0: ios=2042/3258, merge=4082/57993, ticks=172864/1369776, in_queue=1552476, util=95.44%
5.05user 1.92system 0:15.70elapsed 44%CPU (0avgtext+0avgdata 0maxresident)k
533344inputs+490544outputs (0major+2447minor)pagefaults 0swaps