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] [25.0% done] [ 18779/ 25194 kb/s] [eta 00m:09s]
Threads: 3: [mmm] [30.8% done] [ 15965/ 19922 kb/s] [eta 00m:09s]
Threads: 3: [mmm] [33.3% done] [ 12739/ 51950 kb/s] [eta 00m:10s]
Threads: 3: [mmF] [35.3% done] [  5121/ 18373 kb/s] [eta 00m:11s]
Threads: 3: [mmF] [36.8% done] [  4714/     0 kb/s] [eta 00m:12s]
Threads: 3: [mmF] [38.1% done] [  3302/     0 kb/s] [eta 00m:13s]
Threads: 3: [mFF] [47.4% done] [  3721/ 12828 kb/s] [eta 00m:10s]
Threads: 3: [mFF] [50.0% done] [  1675/     0 kb/s] [eta 00m:10s]
Threads: 3: [mFF] [50.0% done] [  1952/     0 kb/s] [eta 00m:11s]
Threads: 3: [mFF] [52.2% done] [  1570/     0 kb/s] [eta 00m:11s]
Threads: 3: [mFF] [52.0% done] [  2196/     0 kb/s] [eta 00m:12s]
Threads: 3: [mFF] [66.7% done] [   938/ 20553 kb/s] [eta 00m:07s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=3569, got signal=6
Threads: 2: [_FF] [100.0% done] [  1418/     0 kb/s] [eta 00m:00s]
Threads: 2: [_VV] [84.2% done] [ 57335/     0 kb/s] [eta 00m:03s]
Threads: 2: [_VV] [100.0% done] [ 58962/     0 kb/s] [eta 00m:00s]
fio: (groupid=0): err= 0: pid=3569
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.5%, 2=58.1%, 4=10.0%, 8=31.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=48.2%, 4=8.9%, 10=1.5%, 20=1.0%, 50=1.9%, 100=7.6%
     lat (msec): 250=22.0%, 500=8.3%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=3570
  read : io=100MiB, bw=5,943KiB/s, runt= 17606msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  483, avg=41.94, stdev=64.64
    bw (KiB/s) : min=   15, max=44314, per=64.25%, avg=9255.65, stdev=12817.93
  write: io=73,536KiB, bw=4,991KiB/s, runt= 15087msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  414, avg= 2.89, stdev=20.70
    bw (KiB/s) : min=    0, max=60284, per=137.36%, avg=19225.00, stdev=27657.80
  cpu          : usr=8.70%, sys=4.02%, ctx=10389
  IO depths    : 1=34.8%, 2=20.1%, 4=24.8%, 8=20.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=43.0%, 4=10.4%, 10=18.8%, 20=7.4%, 50=3.8%, 100=3.9%
     lat (msec): 250=11.5%, 500=0.9%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=3571
  read : io=100MiB, bw=5,872KiB/s, runt= 17854msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  393, avg=29.33, stdev=53.62
    bw (KiB/s) : min=   10, max=34673, per=78.06%, avg=11244.79, stdev=11789.14
  write: io=76,988KiB, bw=5,225KiB/s, runt= 15087msec
    slat (msec): min=    0, max=    7, avg= 0.01, stdev= 0.20
    clat (msec): min=    0, max=  206, avg= 1.13, stdev=11.59
    bw (KiB/s) : min=    0, max=55164, per=148.32%, avg=20758.25, stdev=24235.55
  cpu          : usr=8.80%, sys=3.50%, ctx=10965
  IO depths    : 1=45.9%, 2=13.3%, 4=25.5%, 8=15.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=51.2%, 4=8.9%, 10=23.0%, 20=3.0%, 50=1.7%, 100=4.7%
     lat (msec): 250=6.8%, 500=0.6%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=245MiB, aggrb=14,405KiB/s, minb=0KiB/s, maxb=5,943KiB/s, mint=17606msec, maxt=17854msec
  WRITE: io=201MiB, aggrb=13,996KiB/s, minb=0KiB/s, maxb=5,225KiB/s, mint=17606msec, maxt=17854msec

Disk stats (read/write):
  cciss!c0d0: ios=5344/2910, merge=1162/46198, ticks=62488/1462328, in_queue=1524816, util=98.04%
4.13user 1.84system 0:18.17elapsed 32%CPU (0avgtext+0avgdata 0maxresident)k
635856inputs+412464outputs (0major+2446minor)pagefaults 0swaps