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] [15.0% done] [ 16940/  6115 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [19.0% done] [ 10673/  9973 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [23.8% done] [ 14032/  6308 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [27.3% done] [ 17441/  3376 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [30.4% done] [ 10286/  8501 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [34.8% done] [ 10189/  8179 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [37.5% done] [ 10067/  4319 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [41.7% done] [ 15895/  1586 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [45.8% done] [ 11421/  3672 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [50.0% done] [ 11340/  3278 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [52.0% done] [ 11877/  2123 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [56.0% done] [ 11210/  2070 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [57.7% done] [  6121/  5251 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [59.3% done] [  6703/  2713 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [63.0% done] [  8350/  1810 kb/s] [eta 00m:10s]
Threads: 3: [mmm] [64.3% done] [  4657/  4104 kb/s] [eta 00m:10s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=17839, got signal=6
Threads: 2: [m_m] [63.3% done] [  6263/   947 kb/s] [eta 00m:11s]
Threads: 2: [V_m] [64.5% done] [ 12979/   158 kb/s] [eta 00m:11s]
Threads: 1: [__m] [67.7% done] [ 11307/  2387 kb/s] [eta 00m:10s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=17840, got signal=6

fio: (groupid=0): err= 0: pid=17838
  read : io=100MiB, bw=5,013KiB/s, runt= 20829msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    1, max=  367, avg=77.24, stdev=40.22
    bw (KiB/s) : min=  114, max=14163, per=46.01%, avg=5164.58, stdev=2834.14
  write: io=21,156KiB, bw=1,117KiB/s, runt= 19387msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=   31, max=  399, avg=114.01, stdev=48.98
    bw (KiB/s) : min=    0, max= 5587, per=43.92%, avg=2304.92, stdev=1921.17
  cpu          : usr=0.27%, sys=0.50%, ctx=7265
  IO depths    : 1=0.2%, 2=0.6%, 4=10.9%, 8=88.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.3%, 10=2.1%, 20=5.2%, 50=14.9%, 100=44.7%
     lat (msec): 250=31.9%, 500=0.5%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=17839
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=6.7%, 8=93.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=2.2%, 50=6.4%, 100=53.1%
     lat (msec): 250=37.6%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=17840
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=5.6%, 8=94.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=0.5%, 50=10.4%, 100=45.3%
     lat (msec): 250=40.9%, 500=2.0%, 750=0.3%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=223MiB, aggrb=11,225KiB/s, minb=0KiB/s, maxb=5,013KiB/s, mint=0msec, maxt=20829msec
  WRITE: io=99,376KiB, aggrb=5,248KiB/s, minb=0KiB/s, maxb=1,117KiB/s, mint=0msec, maxt=20829msec

Disk stats (read/write):
  cciss!c0d0: ios=4090/1845, merge=751/168, ticks=45064/28516, in_queue=73572, util=99.15%
0.22user 0.32system 0:21.81elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
456752inputs+198792outputs (0major+2438minor)pagefaults 0swaps