2016-11-07 14:36:14 fs_mark -d /fs/md0/1 -n 15360 -L 1 -S 1 -s 4194304

#  fs_mark  -d  /fs/md0/1  -n  15360  -L  1  -S  1  -s  4194304 
#	Version 3.3, 1 thread(s) starting at Mon Nov  7 14:36:14 2016
#	Sync method: INBAND FSYNC: fsync() per file in write loop.
#	Directories:  no subdirectories used
#	File names: 40 bytes long, (16 initial bytes of time stamp with 24 random bytes at end of name)
#	Files info: size 4194304 bytes, written with an IO size of 16384 bytes per write
#	App overhead is time in microseconds spent in the test not doing file writing related system calls.

FSUse%        Count         Size    Files/sec     App Overhead
    86        15360      4194304         85.4          1328788