PS C:\Users\callum.massey\Downloads> ./fio.exe --thread --filename=fiotmp --verify_pattern=0xdeadbeef --rw=write --verify=pattern --siz
e=100m --stonewall --bs=1m --name=layout --do_verify=0 --name=trim --rw=trim --bs=4k --name=verify --verify_only=1 --unlink=1
layout: (g=0): rw=write, bs=(R) 1024KiB-1024KiB, (W) 1024KiB-1024KiB, (T) 1024KiB-1024KiB, ioengine=windowsaio, iodepth=1
trim: (g=1): rw=trim, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=windowsaio, iodepth=1
verify: (g=2): rw=write, bs=(R) 1024KiB-1024KiB, (W) 1024KiB-1024KiB, (T) 1024KiB-1024KiB, ioengine=windowsaio, iodepth=1
fio-3.5-94-g946f9-dirty
Starting 3 threads
fio: got pattern 'ff', wanted 'de'. Bad bits 2/s,w=0KiB/s,t=1696KiB/s][r=0,w=0,t=424 IOPS][eta 00m:00s]
fio: bad pattern block offset 0
pattern: verify failed at file fiotmp offset 0, length 1200798406
fio: verify type mismatch (17720 media, 18 given)
verify: No I/O performed by windowsaio, perhaps try --debug=io option for details?
fio: pid=19188, err=42/file:io_u.c:2106, func=io_u_queued_complete, error=Illegal byte sequence

layout: (groupid=0, jobs=1): err= 0: pid=22240: Thu Apr 5 17:44:16 2018
  write: IOPS=1333, BW=1333MiB/s (1398MB/s)(100MiB/75msec)
    slat (usec): min=313, max=1314, avg=650.45, stdev=278.75
    clat (usec): min=10, max=131, avg=80.01, stdev=20.16
     lat (usec): min=387, max=1382, avg=730.46, stdev=286.13
    clat percentiles (usec):
     |  1.00th=[   11],  5.00th=[   42], 10.00th=[   61], 20.00th=[   72],
     | 30.00th=[   75], 40.00th=[   77], 50.00th=[   79], 60.00th=[   82],
     | 70.00th=[   85], 80.00th=[   92], 90.00th=[  105], 95.00th=[  112],
     | 99.00th=[  126], 99.50th=[  133], 99.90th=[  133], 99.95th=[  133],
     | 99.99th=[  133]
  lat (usec)   : 20=2.00%, 50=5.00%, 100=75.00%, 250=18.00%
  cpu          : usr=0.00%, sys=0.00%, ctx=0, majf=0, minf=0
  IO depths    : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     submit    : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0%
     complete  : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0%
     issued rwts: total=0,100,0,0 short=0,0,0,0 dropped=0,0,0,0
     latency   : target=0, window=0, percentile=100.00%, depth=1
trim: (groupid=1, jobs=1): err= 0: pid=23560: Thu Apr 5 17:44:16 2018
   trim: IOPS=418, BW=1673KiB/s (1713kB/s)(100MiB/61225msec)
    slat (usec): min=24, max=109178, avg=2283.93, stdev=1711.64
    clat (nsec): min=535, max=51862k, avg=100477.33, stdev=701389.91
     lat (usec): min=128, max=109266, avg=2384.41, stdev=1831.00
    clat percentiles (nsec):
     |  1.00th=[    1176],  5.00th=[    4016], 10.00th=[   16512],
     | 20.00th=[   49920], 30.00th=[   72192], 40.00th=[   81408],
     | 50.00th=[   91648], 60.00th=[   98816], 70.00th=[  102912],
     | 80.00th=[  107008], 90.00th=[  114176], 95.00th=[  120320],
     | 99.00th=[  140288], 99.50th=[  189440], 99.90th=[ 3129344],
     | 99.95th=[15532032], 99.99th=[36438016]
   bw (  KiB/s): min= 1138, max= 8132, per=93.41%, avg=1561.76, stdev=606.21, samples=122
   iops        : min=  284, max= 2033, avg=390.05, stdev=151.59, samples=122
  lat (nsec)   : 750=0.61%, 1000=0.23%
  lat (usec)   : 2=1.25%, 4=2.80%, 10=2.35%, 20=4.33%, 50=8.49%
  lat (usec)   : 100=41.50%, 250=38.06%, 500=0.11%, 750=0.04%, 1000=0.02%
  lat (msec)   : 2=0.05%, 4=0.06%, 10=0.04%, 20=0.03%, 50=0.03%
  lat (msec)   : 100=0.01%
  cpu          : usr=0.00%, sys=3.27%, ctx=0, majf=0, minf=0
  IO depths    : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     submit    : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0%
     complete  : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0%
     issued rwts: total=0,0,25600,0 short=0,0,0,0 dropped=0,0,0,0
     latency   : target=0, window=0, percentile=100.00%, depth=1
verify: (groupid=2, jobs=1): err=42 (file:io_u.c:2106, func=io_u_queued_complete, error=Illegal byte sequence): pid=19188: Thu Apr 5 17:44:16 2018
   read: IOPS=500, BW=500MiB/s (524MB/s)(1024KiB/2msec)
    slat (nsec): min=206499, max=206499, avg=206499.00, stdev= 0.00
    clat (nsec): min=59990, max=59990, avg=59990.00, stdev= 0.00
     lat (nsec): min=266489, max=266489, avg=266489.00, stdev= 0.00
    clat percentiles (nsec):
     |  1.00th=[60160],  5.00th=[60160], 10.00th=[60160], 20.00th=[60160],
     | 30.00th=[60160], 40.00th=[60160], 50.00th=[60160], 60.00th=[60160],
     | 70.00th=[60160], 80.00th=[60160], 90.00th=[60160], 95.00th=[60160],
     | 99.00th=[60160], 99.50th=[60160], 99.90th=[60160], 99.95th=[60160],
     | 99.99th=[60160]
  lat (usec)   : 100=0.99%
  cpu          : usr=0.00%, sys=0.00%, ctx=0, majf=0, minf=0
  IO depths    : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     submit    : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0%
     complete  : 0=33.3%, 4=66.7%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0%
     issued rwts: total=1,100,0,0 short=0,0,0,0 dropped=0,0,0,0

Run status group 0 (all jobs):
  WRITE: bw=1333MiB/s (1398MB/s), 1333MiB/s-1333MiB/s (1398MB/s-1398MB/s), io=100MiB (105MB), run=75-75msec

Run status group 1 (all jobs):
   READ: bw=0B/s (0B/s), 0B/s-0B/s (0B/s-0B/s), io=0B (0B), run=1-1msec
   TRIM: bw=1673KiB/s (1713kB/s), 1673KiB/s-1673KiB/s (1713kB/s-1713kB/s), io=100MiB (105MB), run=61225-61225msec

Run status group 2 (all jobs):
   READ: bw=500MiB/s (524MB/s), 500MiB/s-500MiB/s (524MB/s-524MB/s), io=1024KiB (1049kB), run=2-2msec