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] [30.0% done] [ 19086/ 26359 kb/s] [eta 00m:07s]
Threads: 3: [mmm] [36.4% done] [ 16506/ 42924 kb/s] [eta 00m:07s]
Threads: 3: [mmm] [38.5% done] [ 12409/     0 kb/s] [eta 00m:08s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=23985, got signal=6
Threads: 2: [m_m] [40.0% done] [  5506/  6989 kb/s] [eta 00m:09s]
Threads: 2: [m_m] [41.2% done] [  4201/     0 kb/s] [eta 00m:10s]
Threads: 2: [m_m] [42.1% done] [  2933/ 14868 kb/s] [eta 00m:11s]
Threads: 2: [F_m] [64.3% done] [  1029/ 44266 kb/s] [eta 00m:05s]
Threads: 2: [F_F] [100.0% done] [     0/  4096 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] [68.2% done] [   487/     0 kb/s] [eta 00m:07s]
Threads: 2: [V_V] [84.2% done] [ 52614/     0 kb/s] [eta 00m:03s]
Threads: 2: [V_V] [100.0% done] [ 52463/     0 kb/s] [eta 00m:00s]
fio: (groupid=0): err= 0: pid=23984
  read : io=100MiB, bw=5,943KiB/s, runt= 17643msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  339, avg=40.56, stdev=63.62
    bw (KiB/s) : min=   12, max=33062, per=63.45%, avg=8617.30, stdev=10304.48
  write: io=72,168KiB, bw=4,938KiB/s, runt= 14964msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  179, avg= 1.87, stdev=11.29
    bw (KiB/s) : min=    0, max=24457, per=66.55%, avg=9375.33, stdev=13189.31
  cpu          : usr=8.18%, sys=4.72%, ctx=6328
  IO depths    : 1=3.6%, 2=50.2%, 4=26.3%, 8=19.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=42.6%, 4=15.0%, 10=19.6%, 20=3.4%, 50=1.5%, 100=7.7%
     lat (msec): 250=8.9%, 500=1.1%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=23985
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.3%, 2=74.4%, 4=6.8%, 8=18.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=65.6%, 4=9.9%, 10=1.1%, 20=0.9%, 50=3.9%, 100=9.9%
     lat (msec): 250=7.7%, 500=0.8%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=23986
  read : io=100MiB, bw=5,922KiB/s, runt= 17704msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  435, avg=47.95, stdev=78.49
    bw (KiB/s) : min=   14, max=28385, per=66.05%, avg=8970.55, stdev=8705.19
  write: io=61,344KiB, bw=4,197KiB/s, runt= 14964msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  239, avg= 1.41, stdev=12.43
    bw (KiB/s) : min=    0, max=60145, per=150.91%, avg=21260.00, stdev=33724.41
  cpu          : usr=7.16%, sys=4.00%, ctx=6939
  IO depths    : 1=9.1%, 2=43.1%, 4=24.9%, 8=22.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=45.3%, 4=9.0%, 10=19.9%, 20=5.6%, 50=0.5%, 100=8.8%
     lat (msec): 250=8.2%, 500=2.4%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=229MiB, aggrb=13,581KiB/s, minb=0KiB/s, maxb=5,943KiB/s, mint=17704msec, maxt=17704msec
  WRITE: io=201MiB, aggrb=14,088KiB/s, minb=0KiB/s, maxb=4,938KiB/s, mint=17704msec, maxt=17704msec

Disk stats (read/write):
  cciss!c0d0: ios=2986/3434, merge=25715/48021, ticks=175156/1482400, in_queue=1657556, util=98.30%
3.88user 1.97system 0:18.04elapsed 32%CPU (0avgtext+0avgdata 0maxresident)k
606672inputs+411824outputs (0major+2450minor)pagefaults 0swaps