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] [11.5% done] [ 17762/  2965 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [28.6% done] [ 16554/ 63099 kb/s] [eta 00m:10s]
Threads: 3: [mmm] [33.3% done] [  9355/ 49652 kb/s] [eta 00m:10s]
Threads: 3: [mmm] [40.0% done] [  4778/ 20175 kb/s] [eta 00m:09s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=19875, got signal=6
Threads: 2: [_mm] [50.0% done] [  5023/ 13158 kb/s] [eta 00m:07s]
Threads: 2: [_mm] [50.0% done] [  3949/     0 kb/s] [eta 00m:08s]
Threads: 2: [_mm] [52.9% done] [  2468/     0 kb/s] [eta 00m:08s]
Threads: 2: [_Fm] [52.6% done] [  2253/  5971 kb/s] [eta 00m:09s]
Threads: 2: [_FF] [100.0% done] [   414/ 23266 kb/s] [eta 00m:00s]
Threads: 2: [_FF] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [_FF] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [_FF] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [_FF] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [_VV] [76.2% done] [ 26595/     0 kb/s] [eta 00m:05s]
Threads: 2: [_VV] [94.4% done] [ 52406/     0 kb/s] [eta 00m:01s]
Threads: 2: [_VV] [100.0% done] [ 53800/     0 kb/s] [eta 00m:00s]
fio: (groupid=0): err= 0: pid=19875
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.4%, 2=76.0%, 4=6.6%, 8=17.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=62.6%, 4=14.0%, 10=1.8%, 20=2.4%, 50=4.2%, 100=2.5%
     lat (msec): 250=11.7%, 500=0.4%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=19876
  read : io=100MiB, bw=5,734KiB/s, runt= 18282msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  383, avg=49.53, stdev=76.02
    bw (KiB/s) : min=   15, max=32119, per=63.61%, avg=8167.33, stdev=10526.22
  write: io=72,848KiB, bw=4,817KiB/s, runt= 15483msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  126, avg= 1.70, stdev=10.25
    bw (KiB/s) : min=    0, max=23120, per=69.12%, avg=9827.25, stdev=10006.80
  cpu          : usr=7.83%, sys=4.09%, ctx=8917
  IO depths    : 1=25.4%, 2=27.1%, 4=27.4%, 8=20.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=42.4%, 4=11.4%, 10=21.0%, 20=5.7%, 50=1.2%, 100=4.7%
     lat (msec): 250=11.5%, 500=1.8%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=19877
  read : io=100MiB, bw=5,744KiB/s, runt= 18252msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  495, avg=54.89, stdev=85.04
    bw (KiB/s) : min=   27, max=25586, per=56.00%, avg=7190.58, stdev=8417.34
  write: io=64,316KiB, bw=4,254KiB/s, runt= 15479msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  259, avg= 2.26, stdev=15.77
    bw (KiB/s) : min=    0, max= 5154, per=22.19%, avg=3155.33, stdev=2764.84
  cpu          : usr=7.32%, sys=3.88%, ctx=7115
  IO depths    : 1=1.0%, 2=49.8%, 4=27.7%, 8=21.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=38.8%, 4=12.9%, 10=21.4%, 20=5.8%, 50=1.4%, 100=5.2%
     lat (msec): 250=11.5%, 500=2.7%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=224MiB, aggrb=12,840KiB/s, minb=0KiB/s, maxb=5,744KiB/s, mint=18252msec, maxt=18282msec
  WRITE: io=210MiB, aggrb=14,218KiB/s, minb=0KiB/s, maxb=4,817KiB/s, mint=18252msec, maxt=18282msec

Disk stats (read/write):
  cciss!c0d0: ios=5150/3360, merge=1132/50352, ticks=60996/1633364, in_queue=1694920, util=98.59%
4.15user 1.92system 0:18.62elapsed 32%CPU (0avgtext+0avgdata 0maxresident)k
606648inputs+429992outputs (0major+2453minor)pagefaults 0swaps