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] [ 11491/  8313 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [18.2% done] [ 13605/  7411 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [21.7% done] [ 10995/  7444 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [26.1% done] [  6886/ 11718 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [30.4% done] [ 16530/  3856 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [34.8% done] [ 16998/     0 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [37.5% done] [ 16229/     0 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [41.7% done] [ 14114/  1875 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [44.0% done] [  8643/  6525 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [48.0% done] [ 10270/  4059 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [50.0% done] [ 12072/  2436 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [53.8% done] [  9427/  3189 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [55.6% done] [  9518/  2029 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [59.3% done] [ 12308/     0 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [60.7% done] [  7528/  2456 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [62.1% done] [  4327/  4925 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [65.5% done] [  8814/     0 kb/s] [eta 00m:10s]
Threads: 3: [mmV] [66.7% done] [  8757/   321 kb/s] [eta 00m:10s]
Threads: 3: [mmV] [65.6% done] [ 13980/   939 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=26193, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=26192, got signal=6

fio: (groupid=0): err= 0: pid=26192
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.2%, 4=4.5%, 8=95.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.1%, 10=0.0%, 20=0.9%, 50=7.1%, 100=43.5%
     lat (msec): 250=45.8%, 500=1.1%, 750=0.3%, 1000=0.3%, >=2000=0.2%
fio: (groupid=0): err= 0: pid=26193
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.2%, 4=5.6%, 8=94.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.1%, 10=0.2%, 20=1.4%, 50=5.6%, 100=45.0%
     lat (msec): 250=45.0%, 500=2.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=26194
  read : io=99MiB, bw=4,859KiB/s, runt= 21408msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    6, max=  199, avg=82.89, stdev=35.75
    bw (KiB/s) : min=  246, max=15594, per=44.01%, avg=5040.24, stdev=2843.17
  write: io=20,188KiB, bw=1,044KiB/s, runt= 19799msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=   67, max=  200, avg=118.74, stdev=28.02
    bw (KiB/s) : min=    0, max= 7573, per=56.82%, avg=2555.56, stdev=2857.50
  cpu          : usr=0.26%, sys=0.54%, ctx=7369
  IO depths    : 1=0.2%, 2=0.2%, 4=8.0%, 8=91.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.4%, 20=3.4%, 50=12.6%, 100=47.1%
     lat (msec): 250=36.0%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=234MiB, aggrb=11,452KiB/s, minb=0KiB/s, maxb=4,859KiB/s, mint=21408msec, maxt=21408msec
  WRITE: io=86,972KiB, aggrb=4,498KiB/s, minb=0KiB/s, maxb=1,044KiB/s, mint=21408msec, maxt=21408msec

Disk stats (read/write):
  cciss!c0d0: ios=4630/1692, merge=852/166, ticks=56032/26252, in_queue=82272, util=98.91%
0.18user 0.34system 0:22.53elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
479392inputs+173976outputs (0major+2442minor)pagefaults 0swaps