Create a gist now

Instantly share code, notes, and snippets.

What would you like to do?
Sandisk Ultrafit 16Gb
Disk /dev/sdb: 14.3 GiB, 15376000000 bytes, 30031250 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: dos
Disk identifier: 0x24a97d20
Device Boot Start End Sectors Size Id Type
/dev/sdb1 2048 30029823 30027776 14.3G 7 HPFS/NTFS/exFAT
=========================================================================================================
fio -name=iops -rw=randread -bs=4k -size=1G -iodepth=1 -directory=/media/nikitas/USB16G -ioengine libaio
iops: (g=0): rw=randread, bs=4K-4K/4K-4K/4K-4K, ioengine=libaio, iodepth=1
fio-2.1.11
Starting 1 process
iops: Laying out IO file(s) (1 file(s) / 1024MB)
Jobs: 1 (f=1): [r(1)] [100.0% done] [304.6MB/0KB/0KB /s] [77.1K/0/0 iops] [eta 00m:00s]
iops: (groupid=0, jobs=1): err= 0: pid=15561: Fri Mar 31 12:37:00 2017
read : io=1024.0MB, bw=312541KB/s, iops=78135, runt= 3355msec
slat (usec): min=8, max=3758, avg=11.81, stdev=13.79
clat (usec): min=0, max=85, avg= 0.33, stdev= 0.59
lat (usec): min=8, max=3761, avg=12.23, stdev=13.85
clat percentiles (usec):
| 1.00th=[ 0], 5.00th=[ 0], 10.00th=[ 0], 20.00th=[ 0],
| 30.00th=[ 0], 40.00th=[ 0], 50.00th=[ 0], 60.00th=[ 0],
| 70.00th=[ 1], 80.00th=[ 1], 90.00th=[ 1], 95.00th=[ 1],
| 99.00th=[ 1], 99.50th=[ 1], 99.90th=[ 1], 99.95th=[ 2],
| 99.99th=[ 9]
bw (KB /s): min=302176, max=316224, per=99.86%, avg=312101.33, stdev=5371.51
lat (usec) : 2=99.94%, 4=0.03%, 10=0.01%, 20=0.01%, 50=0.01%
lat (usec) : 100=0.01%
cpu : usr=7.87%, sys=40.31%, ctx=262443, majf=0, minf=6
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 : total=r=262144/w=0/d=0, short=r=0/w=0/d=0
latency : target=0, window=0, percentile=100.00%, depth=1
Run status group 0 (all jobs):
READ: io=1024.0MB, aggrb=312541KB/s, minb=312541KB/s, maxb=312541KB/s, mint=3355msec, maxt=3355msec
Disk stats (read/write):
sdb: ios=0/0, merge=0/0, ticks=0/0, in_queue=0, util=0.00%
=========================================================================================================
fio -name=iops -rw=randread -bs=4k -size=1G -iodepth=32 -directory=/media/nikitas/USB16G -ioengine libaio
iops: (g=0): rw=randread, bs=4K-4K/4K-4K/4K-4K, ioengine=libaio, iodepth=32
fio-2.1.11
Starting 1 process
Jobs: 1 (f=1): [r(1)] [100.0% done] [120.7MB/0KB/0KB /s] [30.9K/0/0 iops] [eta 00m:00s]
iops: (groupid=0, jobs=1): err= 0: pid=15874: Fri Mar 31 12:41:13 2017
read : io=1024.0MB, bw=7231.9KB/s, iops=1807, runt=144995msec
slat (usec): min=9, max=10380K, avg=550.54, stdev=20299.74
clat (usec): min=1, max=10408K, avg=17145.57, stdev=113530.08
lat (usec): min=12, max=10409K, avg=17696.42, stdev=115364.72
clat percentiles (usec):
| 1.00th=[ 370], 5.00th=[ 390], 10.00th=[ 414], 20.00th=[ 1176],
| 30.00th=[ 5792], 40.00th=[12608], 50.00th=[19584], 60.00th=[23424],
| 70.00th=[24704], 80.00th=[25728], 90.00th=[27776], 95.00th=[30592],
| 99.00th=[36608], 99.50th=[39168], 99.90th=[44800], 99.95th=[46848],
| 99.99th=[10420224]
bw (KB /s): min= 174, max=125648, per=100.00%, avg=7421.71, stdev=10739.53
lat (usec) : 2=0.01%, 20=0.01%, 50=0.01%, 100=0.01%, 250=0.01%
lat (usec) : 500=16.82%, 750=2.21%, 1000=0.44%
lat (msec) : 2=3.12%, 4=4.21%, 10=9.54%, 20=14.37%, 50=49.26%
lat (msec) : 100=0.01%, >=2000=0.01%
cpu : usr=0.55%, sys=1.42%, ctx=262604, majf=0, minf=38
IO depths : 1=0.1%, 2=0.1%, 4=0.1%, 8=0.1%, 16=0.1%, 32=100.0%, >=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=0.1%, 64=0.0%, >=64=0.0%
issued : total=r=262144/w=0/d=0, short=r=0/w=0/d=0
latency : target=0, window=0, percentile=100.00%, depth=32
Run status group 0 (all jobs):
READ: io=1024.0MB, aggrb=7231KB/s, minb=7231KB/s, maxb=7231KB/s, mint=144995msec, maxt=144995msec
Disk stats (read/write):
sdb: ios=168094/2, merge=2/0, ticks=384104/176, in_queue=384208, util=95.54%
=========================================================================================================
fio -name=iops -rw=randread -bs=4k -size=1G -iodepth=32 -directory=/media/nikitas/USB16G -ioengine libaio
iops: (g=0): rw=randread, bs=4K-4K/4K-4K/4K-4K, ioengine=libaio, iodepth=32
fio-2.1.11
Starting 1 process
iops: Laying out IO file(s) (1 file(s) / 1024MB)
Jobs: 1 (f=1): [r(1)] [-.-% done] [301.3MB/0KB/0KB /s] [77.2K/0/0 iops] [eta 00m:00s]
iops: (groupid=0, jobs=1): err= 0: pid=16639: Fri Mar 31 12:55:32 2017
read : io=1024.0MB, bw=309041KB/s, iops=77260, runt= 3393msec
slat (usec): min=9, max=1073, avg=11.98, stdev=10.59
clat (usec): min=1, max=1730, avg=401.45, stdev=77.05
lat (usec): min=14, max=1745, avg=413.51, stdev=78.35
clat percentiles (usec):
| 1.00th=[ 342], 5.00th=[ 362], 10.00th=[ 362], 20.00th=[ 366],
| 30.00th=[ 370], 40.00th=[ 374], 50.00th=[ 378], 60.00th=[ 382],
| 70.00th=[ 394], 80.00th=[ 418], 90.00th=[ 470], 95.00th=[ 524],
| 99.00th=[ 732], 99.50th=[ 836], 99.90th=[ 1288], 99.95th=[ 1384],
| 99.99th=[ 1544]
bw (KB /s): min=303944, max=311592, per=99.82%, avg=308494.67, stdev=2611.65
lat (usec) : 2=0.01%, 20=0.01%, 50=0.01%, 100=0.01%, 250=0.01%
lat (usec) : 500=93.53%, 750=5.61%, 1000=0.65%
lat (msec) : 2=0.20%
cpu : usr=6.96%, sys=40.33%, ctx=262368, majf=0, minf=37
IO depths : 1=0.1%, 2=0.1%, 4=0.1%, 8=0.1%, 16=0.1%, 32=100.0%, >=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=0.1%, 64=0.0%, >=64=0.0%
issued : total=r=262144/w=0/d=0, short=r=0/w=0/d=0
latency : target=0, window=0, percentile=100.00%, depth=32
Run status group 0 (all jobs):
READ: io=1024.0MB, aggrb=309040KB/s, minb=309040KB/s, maxb=309040KB/s, mint=3393msec, maxt=3393msec
Disk stats (read/write):
sdb: ios=0/0, merge=0/0, ticks=0/0, in_queue=0, util=0.00%
=========================================================================================================
# hdparm -tT /dev/sdb
/dev/sdb:
Timing cached reads: 10866 MB in 2.00 seconds = 5436.53 MB/sec
Timing buffered disk reads: 152 MB in 3.02 seconds = 50.32 MB/sec
# hdparm -tT /dev/sdb
/dev/sdb:
Timing cached reads: 10776 MB in 2.00 seconds = 5391.12 MB/sec
Timing buffered disk reads: 152 MB in 3.02 seconds = 50.35 MB/sec
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment