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 23:03:53 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 1294 1311 7471 7209 5843 132 102400 16 5512 5250 10135 9965 9247 37 102400 512 9410 9347 15500 13923 15442 1186 102400 1024 9563 9450 15626 14042 15594 2319 102400 16384 9558 9536 15919 14205 15918 7976 iozone test complete. 4 KiB from . (ext4 /dev/mmcblk0p1): request=1 time=1.18 ms 4 KiB from . (ext4 /dev/mmcblk0p1): request=2 time=857 us 4 KiB from . (ext4 /dev/mmcblk0p1): request=3 time=805 us 4 KiB from . (ext4 /dev/mmcblk0p1): request=4 time=793 us 4 KiB from . (ext4 /dev/mmcblk0p1): request=5 time=783 us 4 KiB from . (ext4 /dev/mmcblk0p1): request=6 time=795 us 4 KiB from . (ext4 /dev/mmcblk0p1): request=7 time=859 us 4 KiB from . (ext4 /dev/mmcblk0p1): request=8 time=800 us 4 KiB from . (ext4 /dev/mmcblk0p1): request=9 time=804 us 4 KiB from . (ext4 /dev/mmcblk0p1): request=10 time=745 us --- . (ext4 /dev/mmcblk0p1) ioping statistics --- 10 requests completed in 9.01 s, 1.19 k iops, 4.64 MiB/s min/avg/max/mdev = 745 us / 842 us / 1.18 ms / 116 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=1179: Tue May 2 00:15:48 2017 read : io=76764KB, bw=350423B/s, iops=85, runt=224318msec write: io=25636KB, bw=117027B/s, iops=28, runt=224318msec cpu : usr=0.29%, sys=0.85%, ctx=25037, 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=342KB/s, minb=342KB/s, maxb=342KB/s, mint=224318msec, maxt=224318msec WRITE: io=25636KB, aggrb=114KB/s, minb=114KB/s, maxb=114KB/s, mint=224318msec, maxt=224318msec Disk stats (read/write): mmcblk0: ios=18577/6339, merge=613/75, ticks=10287270/3731790, in_queue=14020670, util=100.00%