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] [27.3% done] [ 16607/     0 kb/s] [eta 00m:08s]
Threads: 3: [Fmm] [33.3% done] [ 11356/ 40288 kb/s] [eta 00m:08s]
Threads: 3: [Fmm] [50.0% done] [  4490/ 19894 kb/s] [eta 00m:05s]
Threads: 3: [Fmm] [66.7% done] [  1480/ 29196 kb/s] [eta 00m:03s]
Threads: 3: [FmF] [63.6% done] [  1843/  1742 kb/s] [eta 00m:04s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=21492, got signal=6
Threads: 2: [F_F] [100.0% done] [   370/  4897 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] [73.7% done] [ 29362/     0 kb/s] [eta 00m:05s]
Threads: 2: [V_V] [93.8% done] [ 54488/     0 kb/s] [eta 00m:01s]
Threads: 2: [V_V] [100.0% done] [ 56514/     0 kb/s] [eta 00m:00s]
fio: (groupid=0): err= 0: pid=21491
  read : io=100MiB, bw=6,443KiB/s, runt= 16271msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  215, avg=20.86, stdev=38.50
    bw (KiB/s) : min=    0, max=41057, per=118.61%, avg=16237.17, stdev=15137.29
  write: io=85,164KiB, bw=6,456KiB/s, runt= 13507msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  139, avg= 1.12, stdev= 7.81
    bw (KiB/s) : min=    0, max=60129, per=136.29%, avg=24930.25, stdev=25375.89
  cpu          : usr=10.60%, sys=5.19%, ctx=7760
  IO depths    : 1=15.2%, 2=45.2%, 4=27.0%, 8=12.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=48.2%, 4=14.6%, 10=22.3%, 20=4.2%, 50=2.3%, 100=2.8%
     lat (msec): 250=5.3%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=21492
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=13.7%, 2=59.2%, 4=5.9%, 8=21.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=64.4%, 4=10.5%, 10=1.0%, 20=0.1%, 50=2.7%, 100=10.1%
     lat (msec): 250=9.6%, 500=1.4%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=21493
  read : io=100MiB, bw=6,339KiB/s, runt= 16540msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  387, avg=36.11, stdev=57.11
    bw (KiB/s) : min=    8, max=31562, per=75.99%, avg=10402.29, stdev=9212.54
  write: io=70,144KiB, bw=5,319KiB/s, runt= 13503msec
    slat (msec): min=    0, max=    1, avg= 0.00, stdev= 0.05
    clat (msec): min=    0, max=  255, avg= 1.98, stdev=14.74
    bw (KiB/s) : min=    0, max=60219, per=113.30%, avg=20724.75, stdev=27349.64
  cpu          : usr=8.92%, sys=4.89%, ctx=7196
  IO depths    : 1=7.0%, 2=46.8%, 4=27.4%, 8=18.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=43.5%, 4=12.1%, 10=22.0%, 20=5.2%, 50=2.1%, 100=5.6%
     lat (msec): 250=9.1%, 500=0.4%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=216MiB, aggrb=13,689KiB/s, minb=0KiB/s, maxb=6,443KiB/s, mint=16540msec, maxt=16540msec
  WRITE: io=236MiB, aggrb=18,292KiB/s, minb=0KiB/s, maxb=6,456KiB/s, mint=16540msec, maxt=16540msec

Disk stats (read/write):
  cciss!c0d0: ios=4666/3180, merge=935/57178, ticks=39480/1479048, in_queue=1518524, util=98.16%
4.67user 2.06system 0:16.87elapsed 39%CPU (0avgtext+0avgdata 0maxresident)k
556776inputs+482744outputs (0major+2451minor)pagefaults 0swaps