Iozone: Performance Test of File I/O Version $Revision: 3.429 $ Compiled for 32 bit mode. Build: linux Contributors:William Norcott, Don Capps, Isom Crawford, Kirby Collins Al Slater, Scott Rhine, Mike Wisner, Ken Goss Steve Landherr, Brad Smith, Mark Kelly, Dr. Alain CYR, Randy Dunlap, Mark Montague, Dan Million, Gavin Brebner, Jean-Marc Zucconi, Jeff Blomberg, Benny Halevy, Dave Boone, Erik Habbinga, Kris Strecker, Walter Wong, Joshua Root, Fabrice Bacchella, Zhenghua Xue, Qin Li, Darren Sawyer, Vangel Bojaxhi, Ben England, Vikentsi Lapa. Run began: Tue May 2 08:39:37 2017 Include fsync in write timing O_DIRECT feature enabled Auto Mode File size set to 102400 kB Record Size 4 kB Record Size 16 kB Record Size 512 kB Record Size 1024 kB Record Size 16384 kB Command line used: iozone -e -I -a -s 100M -r 4k -r 16k -r 512k -r 1024k -r 16384k -i 0 -i 1 -i 2 Output is in kBytes/sec Time Resolution = 0.000001 seconds. Processor cache size set to 1024 kBytes. Processor cache line size set to 32 bytes. File stride size set to 17 * record size. random random bkwd record stride kB reclen write rewrite read reread read write read rewrite read fwrite frewrite fread freread 102400 4 1330 1349 7462 7255 5814 153 102400 16 2837 2887 8698 8622 7833 36 102400 512 8357 9008 15395 15393 15338 1018 102400 1024 8529 8760 15638 15638 15610 1859 102400 16384 8647 9371 15883 15882 15881 7417 iozone test complete. 4 KiB from . (f2fs /dev/mmcblk0p2): request=1 time=1.14 ms 4 KiB from . (f2fs /dev/mmcblk0p2): request=2 time=950 us 4 KiB from . (f2fs /dev/mmcblk0p2): request=3 time=945 us 4 KiB from . (f2fs /dev/mmcblk0p2): request=4 time=927 us 4 KiB from . (f2fs /dev/mmcblk0p2): request=5 time=903 us 4 KiB from . (f2fs /dev/mmcblk0p2): request=6 time=926 us 4 KiB from . (f2fs /dev/mmcblk0p2): request=7 time=901 us 4 KiB from . (f2fs /dev/mmcblk0p2): request=8 time=931 us 4 KiB from . (f2fs /dev/mmcblk0p2): request=9 time=931 us 4 KiB from . (f2fs /dev/mmcblk0p2): request=10 time=873 us --- . (f2fs /dev/mmcblk0p2) ioping statistics --- 10 requests completed in 9.01 s, 1.06 k iops, 4.14 MiB/s min/avg/max/mdev = 873 us / 942 us / 1.14 ms / 69 us test: (g=0): rw=randrw, bs=4K-4K/4K-4K/4K-4K, ioengine=libaio, iodepth=64 fio-2.1.11 Starting 1 process test: Laying out IO file(s) (1 file(s) / 100MB) test: (groupid=0, jobs=1): err= 0: pid=2121: Tue May 2 09:51:50 2017 read : io=76764KB, bw=382957B/s, iops=93, runt=205261msec write: io=25636KB, bw=127892B/s, iops=31, runt=205261msec cpu : usr=0.26%, sys=0.97%, ctx=24696, majf=0, minf=11 IO depths : 1=0.1%, 2=0.1%, 4=0.1%, 8=0.1%, 16=0.1%, 32=0.1%, >=64=99.8% 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=0.1%, >=64=0.0% issued : total=r=19191/w=6409/d=0, short=r=0/w=0/d=0 latency : target=0, window=0, percentile=100.00%, depth=64 Run status group 0 (all jobs): READ: io=76764KB, aggrb=373KB/s, minb=373KB/s, maxb=373KB/s, mint=205261msec, maxt=205261msec WRITE: io=25636KB, aggrb=124KB/s, minb=124KB/s, maxb=124KB/s, mint=205261msec, maxt=205261msec Disk stats (read/write): mmcblk0: ios=18582/6343, merge=608/70, ticks=9376500/3405510, in_queue=12783940, util=100.00%