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] [18.8% done] [ 17664/ 25092 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [36.4% done] [ 15053/ 25397 kb/s] [eta 00m:07s]
Threads: 3: [mmm] [50.0% done] [  7745/ 36311 kb/s] [eta 00m:05s]
Threads: 3: [Fmm] [54.5% done] [  6727/ 23762 kb/s] [eta 00m:05s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=25569, got signal=6
Threads: 2: [F_m] [70.0% done] [  1838/ 28911 kb/s] [eta 00m:03s]
Threads: 2: [F_F] [100.0% done] [   406/  2859 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: [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] [ 18456/     0 kb/s] [eta 00m:06s]
Threads: 2: [V_V] [94.1% done] [ 59027/     0 kb/s] [eta 00m:01s]
Threads: 2: [V_V] [100.0% done] [ 53369/     0 kb/s] [eta 00m:00s]
fio: (groupid=0): err= 0: pid=25568
  read : io=100MiB, bw=5,970KiB/s, runt= 17562msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  303, avg=30.96, stdev=52.80
    bw (KiB/s) : min=    0, max=42077, per=83.29%, avg=11401.00, stdev=14393.13
  write: io=89,740KiB, bw=6,258KiB/s, runt= 14683msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  131, avg= 2.27, stdev= 8.95
    bw (KiB/s) : min=    0, max=60874, per=132.32%, avg=20823.75, stdev=27335.31
  cpu          : usr=10.45%, sys=4.60%, ctx=6362
  IO depths    : 1=2.5%, 2=50.8%, 4=30.4%, 8=16.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=34.4%, 4=21.9%, 10=25.2%, 20=4.4%, 50=1.2%, 100=4.9%
     lat (msec): 250=7.5%, 500=0.3%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=25569
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=29.2%, 2=43.1%, 4=7.5%, 8=20.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=58.8%, 4=11.1%, 10=5.0%, 20=1.0%, 50=1.3%, 100=8.3%
     lat (msec): 250=13.2%, 500=1.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=25570
  read : io=100MiB, bw=6,033KiB/s, runt= 17380msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  290, avg=40.56, stdev=57.42
    bw (KiB/s) : min=    9, max=28517, per=73.11%, avg=10008.65, stdev=9512.36
  write: io=63,596KiB, bw=4,435KiB/s, runt= 14683msec
    slat (msec): min=    0, max=    1, avg= 0.00, stdev= 0.03
    clat (msec): min=    0, max=  201, avg= 2.02, stdev=13.76
    bw (KiB/s) : min=    0, max=19032, per=73.56%, avg=11575.50, stdev=8230.57
  cpu          : usr=7.11%, sys=3.91%, ctx=8974
  IO depths    : 1=28.5%, 2=22.6%, 4=27.9%, 8=21.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=41.8%, 4=9.2%, 10=22.8%, 20=6.1%, 50=2.2%, 100=5.9%
     lat (msec): 250=11.3%, 500=0.4%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=229MiB, aggrb=13,689KiB/s, minb=0KiB/s, maxb=6,033KiB/s, mint=17380msec, maxt=17562msec
  WRITE: io=220MiB, aggrb=15,737KiB/s, minb=0KiB/s, maxb=6,258KiB/s, mint=17380msec, maxt=17562msec

Disk stats (read/write):
  cciss!c0d0: ios=4886/3428, merge=995/52928, ticks=46592/1514400, in_queue=1561192, util=98.26%
4.28user 1.97system 0:17.86elapsed 35%CPU (0avgtext+0avgdata 0maxresident)k
593744inputs+451512outputs (0major+2450minor)pagefaults 0swaps