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] [11.1% done] [ 15782/  4376 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [16.0% done] [ 16924/  1688 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [20.0% done] [ 10795/  6922 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [24.0% done] [ 14801/  3912 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [28.0% done] [ 14614/  1793 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [30.8% done] [ 14024/  3729 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [34.6% done] [ 10998/  5019 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [38.5% done] [  7882/  7073 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [40.7% done] [  3827/  9595 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [44.4% done] [  9900/  3376 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [46.4% done] [  7215/  5633 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [50.0% done] [  5792/  7626 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [53.6% done] [  7476/  4104 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [55.2% done] [  9546/  1683 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [58.6% done] [  8928/  1378 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [60.0% done] [  7858/  1948 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [61.3% done] [  8167/  1586 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [64.5% done] [  5869/  1903 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
Threads: 3: [mmm] [65.6% done] [  7070/   637 kb/s] [eta 00m:11s]
fio: pid=23659, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
Threads: 2: [m_m] [66.7% done] [  7520/    56 kb/s] [eta 00m:11s]
fio: pid=23658, got signal=6
Threads: 1: [__V] [79.3% done] [ 18326/     0 kb/s] [eta 00m:06s]
fio: (groupid=0): err= 0: pid=23658
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=5.4%, 8=94.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.1%, 10=0.1%, 20=1.9%, 50=7.6%, 100=40.8%
     lat (msec): 250=46.6%, 500=2.1%, 750=0.4%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=23659
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=5.3%, 8=94.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=2.6%, 50=7.9%, 100=38.3%
     lat (msec): 250=49.7%, 500=0.9%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=23660
  read : io=100MiB, bw=4,392KiB/s, runt= 23795msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    2, max=  499, avg=79.65, stdev=48.92
    bw (KiB/s) : min=  541, max=22677, per=44.07%, avg=4906.85, stdev=4350.43
  write: io=26,388KiB, bw=1,217KiB/s, runt= 22199msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=   66, max=  737, avg=144.70, stdev=87.04
    bw (KiB/s) : min=    0, max= 5962, per=62.35%, avg=2139.30, stdev=1992.63
  cpu          : usr=0.35%, sys=0.39%, ctx=8036
  IO depths    : 1=0.1%, 2=0.3%, 4=10.7%, 8=88.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.2%, 10=1.6%, 20=3.9%, 50=17.7%, 100=39.5%
     lat (msec): 250=34.3%, 500=1.9%, 750=0.3%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=253MiB, aggrb=11,133KiB/s, minb=0KiB/s, maxb=4,392KiB/s, mint=23795msec, maxt=23795msec
  WRITE: io=74,400KiB, aggrb=3,431KiB/s, minb=0KiB/s, maxb=1,217KiB/s, mint=23795msec, maxt=23795msec

Disk stats (read/write):
  cciss!c0d0: ios=4895/1398, merge=701/334, ticks=54316/30684, in_queue=84996, util=98.69%
0.25user 0.36system 0:24.34elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
517680inputs+148840outputs (0major+2440minor)pagefaults 0swaps