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] [27.3% done] [ 16757/     0 kb/s] [eta 00m:08s]
Threads: 3: [mmm] [33.3% done] [ 17185/ 22595 kb/s] [eta 00m:08s]
Threads: 3: [mmm] [35.7% done] [ 16896/     0 kb/s] [eta 00m:09s]
Threads: 3: [Fmm] [37.5% done] [  4156/ 53764 kb/s] [eta 00m:10s]
Threads: 3: [Fmm] [53.8% done] [  2957/ 21086 kb/s] [eta 00m:06s]
Threads: 3: [Fmm] [53.3% done] [  2163/     0 kb/s] [eta 00m:07s]
Threads: 3: [Fmm] [64.3% done] [  2546/ 20520 kb/s] [eta 00m:05s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=16522, got signal=6
Threads: 2: [F_F] [100.0% done] [  1643/  5881 kb/s] [eta 00m:00s]
Threads: 2: [F_F] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [F_F] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [F_F] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [F_F] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [V_V] [71.4% done] [ 11983/     0 kb/s] [eta 00m:06s]
Threads: 2: [V_V] [80.0% done] [ 48464/     0 kb/s] [eta 00m:04s]
Threads: 2: [V_V] [100.0% done] [ 51756/     0 kb/s] [eta 00m:00s]
fio: (groupid=0): err= 0: pid=16521
  read : io=100MiB, bw=5,913KiB/s, runt= 17732msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  422, avg=31.01, stdev=58.59
    bw (KiB/s) : min=    0, max=39800, per=84.84%, avg=11726.20, stdev=13403.79
  write: io=78,240KiB, bw=5,426KiB/s, runt= 14763msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  197, avg= 1.37, stdev=10.59
    bw (KiB/s) : min=    0, max=59813, per=204.16%, avg=30110.25, stdev=32347.02
  cpu          : usr=8.98%, sys=4.13%, ctx=10571
  IO depths    : 1=38.3%, 2=22.2%, 4=23.4%, 8=16.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=48.6%, 4=12.9%, 10=19.4%, 20=4.0%, 50=2.1%, 100=6.7%
     lat (msec): 250=5.2%, 500=0.8%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=16522
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=52.3%, 2=14.1%, 4=6.9%, 8=26.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=63.6%, 4=1.9%, 10=0.7%, 20=0.7%, 50=2.0%, 100=12.8%
     lat (msec): 250=14.6%, 500=3.3%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=16523
  read : io=100MiB, bw=6,087KiB/s, runt= 17218msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  560, avg=44.97, stdev=77.35
    bw (KiB/s) : min=   38, max=45580, per=61.17%, avg=8454.33, stdev=11609.22
  write: io=66,644KiB, bw=4,622KiB/s, runt= 14764msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  153, avg= 0.98, stdev= 9.29
    bw (KiB/s) : min=    0, max= 8284, per=29.50%, avg=4350.00, stdev=4157.64
  cpu          : usr=7.78%, sys=4.04%, ctx=8806
  IO depths    : 1=23.3%, 2=29.3%, 4=26.9%, 8=20.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=45.9%, 4=7.7%, 10=22.5%, 20=5.5%, 50=1.5%, 100=6.6%
     lat (msec): 250=7.9%, 500=1.9%, 750=0.1%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=234MiB, aggrb=13,821KiB/s, minb=0KiB/s, maxb=6,087KiB/s, mint=17218msec, maxt=17732msec
  WRITE: io=208MiB, aggrb=14,748KiB/s, minb=0KiB/s, maxb=5,426KiB/s, mint=17218msec, maxt=17732msec

Disk stats (read/write):
  cciss!c0d0: ios=5122/3182, merge=1163/49969, ticks=51524/1479780, in_queue=1531536, util=98.29%
4.10user 1.80system 0:18.02elapsed 32%CPU (0avgtext+0avgdata 0maxresident)k
615600inputs+425432outputs (0major+2451minor)pagefaults 0swaps