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] [23.1% done] [ 16701/ 26711 kb/s] [eta 00m:10s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=4889, got signal=6
Threads: 2: [mF_] [40.0% done] [  7919/ 56466 kb/s] [eta 00m:06s]
Threads: 2: [mF_] [41.7% done] [  1755/     0 kb/s] [eta 00m:07s]
Threads: 2: [mF_] [42.9% done] [  1492/     0 kb/s] [eta 00m:08s]
Threads: 2: [mF_] [43.8% done] [  1601/     0 kb/s] [eta 00m:09s]
Threads: 2: [mF_] [44.4% done] [  1905/     0 kb/s] [eta 00m:10s]
Threads: 2: [mF_] [45.0% done] [  2066/     0 kb/s] [eta 00m:11s]
Threads: 2: [mF_] [45.5% done] [  1775/     0 kb/s] [eta 00m:12s]
Threads: 2: [mF_] [50.0% done] [  1332/  4571 kb/s] [eta 00m:11s]
Threads: 2: [mF_] [57.1% done] [   946/ 10402 kb/s] [eta 00m:09s]
Threads: 2: [mF_] [59.1% done] [  1893/     0 kb/s] [eta 00m:09s]
Threads: 2: [FV_] [100.0% done] [ 59879/ 13242 kb/s] [eta 00m:00s]
Threads: 1: [F__] [100.0% done] [ 26042/     0 kb/s] [eta 00m:00s]
Threads: 1: [V__] [88.9% done] [ 30797/     0 kb/s] [eta 00m:02s]
fio: (groupid=0): err= 0: pid=4887
  read : io=100MiB, bw=6,299KiB/s, runt= 16646msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  441, avg=66.11, stdev=106.52
    bw (KiB/s) : min=   98, max=41959, per=47.85%, avg=6323.17, stdev=10342.25
  write: io=50,716KiB, bw=3,388KiB/s, runt= 15328msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  259, avg= 2.23, stdev=17.07
    bw (KiB/s) : min=    0, max= 5651, per=19.03%, avg=2877.00, stdev=2826.91
  cpu          : usr=5.96%, sys=3.32%, ctx=5930
  IO depths    : 1=1.2%, 2=45.0%, 4=24.8%, 8=29.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=38.2%, 4=8.5%, 10=19.9%, 20=8.9%, 50=4.3%, 100=7.4%
     lat (msec): 250=4.8%, 500=7.9%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=4888
  read : io=100MiB, bw=7,121KiB/s, runt= 14685msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  123, avg=15.55, stdev=25.38
    bw (KiB/s) : min=    1, max=67559, per=135.68%, avg=17928.89, stdev=26622.72
  write: io=83,456KiB, bw=6,474KiB/s, runt= 13200msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=   68, avg= 0.42, stdev= 3.91
    bw (KiB/s) : min=    1, max=61472, per=176.90%, avg=26740.33, stdev=31505.22
  cpu          : usr=11.71%, sys=4.14%, ctx=8581
  IO depths    : 1=44.1%, 2=17.6%, 4=23.6%, 8=14.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=52.6%, 4=10.8%, 10=18.5%, 20=6.5%, 50=5.1%, 100=5.3%
     lat (msec): 250=0.9%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=4889
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=1.0%, 2=84.3%, 4=4.7%, 8=10.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=68.1%, 4=17.6%, 10=3.9%, 20=0.2%, 50=0.2%, 100=5.4%
     lat (msec): 250=4.4%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=210MiB, aggrb=13,214KiB/s, minb=0KiB/s, maxb=7,121KiB/s, mint=0msec, maxt=16646msec
  WRITE: io=221MiB, aggrb=15,116KiB/s, minb=0KiB/s, maxb=6,474KiB/s, mint=0msec, maxt=16646msec

Disk stats (read/write):
  cciss!c0d0: ios=2167/3414, merge=16182/53006, ticks=70064/1514860, in_queue=1588352, util=98.01%
4.30user 1.60system 0:16.95elapsed 34%CPU (0avgtext+0avgdata 0maxresident)k
568776inputs+452592outputs (0major+2441minor)pagefaults 0swaps