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
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=18762, got signal=6
Threads: 2: [m_F] [18.8% done] [  4466/153846 kb/s] [eta 00m:13s]
Threads: 2: [m_F] [23.5% done] [  1702/  5741 kb/s] [eta 00m:13s]
Threads: 2: [m_F] [25.0% done] [  2129/     0 kb/s] [eta 00m:15s]
Threads: 2: [m_F] [26.1% done] [  2517/     0 kb/s] [eta 00m:17s]
Threads: 2: [m_F] [46.7% done] [   980/ 29452 kb/s] [eta 00m:08s]
Threads: 2: [m_F] [57.1% done] [  1582/ 12930 kb/s] [eta 00m:06s]
Threads: 2: [m_F] [60.0% done] [  1617/  2332 kb/s] [eta 00m:06s]
Threads: 2: [F_F] [100.0% done] [   333/ 15090 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] [66.7% done] [  8955/     0 kb/s] [eta 00m:07s]
Threads: 2: [V_V] [83.3% done] [ 64295/     0 kb/s] [eta 00m:03s]
Threads: 2: [V_V] [100.0% done] [ 58889/     0 kb/s] [eta 00m:00s]
fio: (groupid=0): err= 0: pid=18761
  read : io=100MiB, bw=6,188KiB/s, runt= 16913msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  537, avg=51.30, stdev=95.89
    bw (KiB/s) : min=   17, max=38177, per=63.69%, avg=8394.17, stdev=12092.87
  write: io=77,544KiB, bw=5,676KiB/s, runt= 13988msec
    slat (msec): min=    0, max=    1, avg= 0.00, stdev= 0.03
    clat (msec): min=    0, max=  291, avg= 2.82, stdev=19.02
    bw (KiB/s) : min=    0, max=59135, per=91.07%, avg=17692.25, stdev=27769.64
  cpu          : usr=9.60%, sys=4.00%, ctx=6963
  IO depths    : 1=4.3%, 2=54.3%, 4=25.1%, 8=16.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=43.6%, 4=15.1%, 10=20.3%, 20=6.2%, 50=1.0%, 100=2.7%
     lat (msec): 250=6.4%, 500=4.3%, 750=0.1%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=18762
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.4%, 2=86.2%, 4=7.3%, 8=6.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=88.6%, 4=3.6%, 10=0.5%, 20=0.5%, 50=0.2%, 100=1.5%
     lat (msec): 250=4.2%, 500=0.5%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=18763
  read : io=100MiB, bw=6,223KiB/s, runt= 16848msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  443, avg=15.57, stdev=44.71
    bw (KiB/s) : min=   19, max=56904, per=169.72%, avg=22368.88, stdev=20288.63
  write: io=98,608KiB, bw=7,235KiB/s, runt= 13955msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  189, avg= 1.17, stdev= 7.89
    bw (KiB/s) : min=    0, max=60405, per=205.43%, avg=39910.33, stdev=34567.57
  cpu          : usr=10.66%, sys=4.70%, ctx=7467
  IO depths    : 1=12.7%, 2=52.7%, 4=27.5%, 8=7.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=49.5%, 4=22.5%, 10=20.0%, 20=2.8%, 50=0.7%, 100=0.6%
     lat (msec): 250=3.4%, 500=0.6%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=213MiB, aggrb=13,180KiB/s, minb=0KiB/s, maxb=6,223KiB/s, mint=16848msec, maxt=16913msec
  WRITE: io=259MiB, aggrb=19,428KiB/s, minb=0KiB/s, maxb=7,235KiB/s, mint=16848msec, maxt=16913msec

Disk stats (read/write):
  cciss!c0d0: ios=4238/3716, merge=1012/62525, ticks=44348/1552164, in_queue=1597296, util=96.40%
4.24user 1.89system 0:17.20elapsed 35%CPU (0avgtext+0avgdata 0maxresident)k
527576inputs+530808outputs (0major+2461minor)pagefaults 0swaps