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] [ 11999/ 11060 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [17.4% done] [ 12580/  8090 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [21.7% done] [ 11568/  8293 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [25.0% done] [  6891/ 10906 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [29.2% done] [ 13986/  5103 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [33.3% done] [ 14498/  4498 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [37.5% done] [ 11398/  5457 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [40.0% done] [  8647/  6395 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [44.0% done] [ 15490/   780 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [46.2% done] [  8163/  5023 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [50.0% done] [  5380/  7602 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [51.9% done] [  8358/  4514 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [55.6% done] [  8793/  3018 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [57.1% done] [ 10365/  2360 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [60.7% done] [  7716/  1751 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [62.1% done] [  4733/  4087 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [63.3% done] [  5542/  2434 kb/s] [eta 00m:11s]
Threads: 3: [Vmm] [64.5% done] [  8996/   247 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=12334, got signal=6
Threads: 2: [Vm_] [63.6% done] [ 16733/    28 kb/s] [eta 00m:12s]
Threads: 1: [_m_] [64.7% done] [ 19101/   130 kb/s] [eta 00m:12s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=12333, got signal=6

fio: (groupid=0): err= 0: pid=12332
  read : io=100MiB, bw=4,763KiB/s, runt= 21935msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    2, max=  287, avg=70.57, stdev=40.40
    bw (KiB/s) : min=   55, max=21333, per=45.84%, avg=4856.69, stdev=4602.53
  write: io=34,160KiB, bw=1,776KiB/s, runt= 19688msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=   55, max=  195, avg=112.94, stdev=29.18
    bw (KiB/s) : min=    0, max= 6858, per=49.73%, avg=2938.39, stdev=2743.88
  cpu          : usr=0.33%, sys=0.33%, ctx=7534
  IO depths    : 1=0.1%, 2=0.4%, 4=14.0%, 8=85.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.2%, 10=2.6%, 20=6.8%, 50=16.8%, 100=41.9%
     lat (msec): 250=31.1%, 500=0.3%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=12333
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=6.3%, 8=93.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=2.5%, 50=11.8%, 100=34.6%
     lat (msec): 250=48.5%, 500=0.9%, 750=0.8%, 1000=0.5%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=12334
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.2%, 4=6.1%, 8=93.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=1.0%, 50=5.8%, 100=49.0%
     lat (msec): 250=43.1%, 500=0.5%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=222MiB, aggrb=10,595KiB/s, minb=0KiB/s, maxb=4,763KiB/s, mint=0msec, maxt=21935msec
  WRITE: io=111MiB, aggrb=5,909KiB/s, minb=0KiB/s, maxb=1,776KiB/s, mint=0msec, maxt=21935msec

Disk stats (read/write):
  cciss!c0d0: ios=4504/2227, merge=671/200, ticks=48720/35520, in_queue=84232, util=98.97%
0.31user 0.53system 0:23.22elapsed 3%CPU (0avgtext+0avgdata 0maxresident)k
454560inputs+227256outputs (0major+2439minor)pagefaults 0swaps