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: Mon May 1 17:14:57 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 2282 2425 7456 7276 7224 831 102400 16 6573 6650 15296 14753 14707 899 102400 512 8913 9462 22291 22289 22285 2135 102400 1024 5145 9177 22428 22430 22429 3724 102400 16384 6513 8928 23005 23012 23012 11120 iozone test complete. 4 KiB from . (f2fs /dev/mmcblk0p2): request=1 time=943 us 4 KiB from . (f2fs /dev/mmcblk0p2): request=2 time=718 us 4 KiB from . (f2fs /dev/mmcblk0p2): request=3 time=670 us 4 KiB from . (f2fs /dev/mmcblk0p2): request=4 time=706 us 4 KiB from . (f2fs /dev/mmcblk0p2): request=5 time=661 us 4 KiB from . (f2fs /dev/mmcblk0p2): request=6 time=668 us 4 KiB from . (f2fs /dev/mmcblk0p2): request=7 time=702 us 4 KiB from . (f2fs /dev/mmcblk0p2): request=8 time=646 us 4 KiB from . (f2fs /dev/mmcblk0p2): request=9 time=651 us 4 KiB from . (f2fs /dev/mmcblk0p2): request=10 time=695 us --- . (f2fs /dev/mmcblk0p2) ioping statistics --- 10 requests completed in 9.01 s, 1.42 k iops, 5.53 MiB/s min/avg/max/mdev = 646 us / 706 us / 943 us / 82 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=2135: Mon May 1 17:26:38 2017 read : io=76764KB, bw=1538.9KB/s, iops=384, runt= 49909msec write: io=25636KB, bw=525982B/s, iops=128, runt= 49909msec cpu : usr=1.48%, sys=3.49%, ctx=24990, majf=0, minf=10 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=1538KB/s, minb=1538KB/s, maxb=1538KB/s, mint=49909msec, maxt=49909msec WRITE: io=25636KB, aggrb=513KB/s, minb=513KB/s, maxb=513KB/s, mint=49909msec, maxt=49909msec Disk stats (read/write): mmcblk0: ios=18401/6276, merge=575/68, ticks=2275110/841900, in_queue=3123660, util=99.95%