fio基础3

[root@iZ116haf49sZ fio]# which fio 
/usr/local/bin/fio
[root@iZ116haf49sZ fio]# fio -h 
fio-2.2.11-15-g236d
fio [options] [job options] <job file(s)>
  --debug=options	Enable debug logging. May be one/more of:
			process,file,io,mem,blktrace,verify,random,parse,
			diskutil,job,mutex,profile,time,net,rate,compress
  --parse-only		Parse options only, don't start any IO
  --output		Write output to file
  --runtime		Runtime in seconds
  --bandwidth-log	Generate per-job bandwidth logs
  --minimal		Minimal (terse) output
  --output-format=x	Output format (terse,json,json+,normal)
  --terse-version=x	Set terse version output format to 'x'
  --version		Print version info and exit
  --help		Print this page
  --cpuclock-test	Perform test/validation of CPU clock
  --crctest		Test speed of checksum functions
  --cmdhelp=cmd		Print command help, "all" for all of them
  --enghelp=engine	Print ioengine help, or list available ioengines
  --enghelp=engine,cmd	Print help for an ioengine cmd
  --showcmd		Turn a job file into command line options
  --eta=when		When ETA estimate should be printed
            		May be "always", "never" or "auto"
  --eta-newline=time	Force a new line for every 'time' period passed
  --status-interval=t	Force full status dump every 't' period passed
  --readonly		Turn on safety read-only checks, preventing writes
  --section=name	Only run specified section in job file
  --alloc-size=kb	Set smalloc pool to this size in kb (def 1024)
  --warnings-fatal	Fio parser warnings are fatal
  --max-jobs=nr		Maximum number of threads/processes to support
  --server=args		Start a backend fio server
  --daemonize=pidfile	Background fio server, write pid to file
  --client=hostname	Talk to remote backend fio server at hostname
  --remote-config=file	Tell fio server to load this local job file
  --idle-prof=option	Report cpu idleness on a system or percpu basis
			(option=system,percpu) or run unit work
			calibration only (option=calibrate)
  --inflate-log=log	Inflate and output compressed log
  --trigger-file=file	Execute trigger cmd when file exists
  --trigger-timeout=t	Execute trigger af this time
  --trigger=cmd		Set this command as local trigger
  --trigger-remote=cmd	Set this command as remote trigger
  --aux-path=path	Use this path for fio state generated files

Fio was written by Jens Axboe <jens.axboe@oracle.com>
                   Jens Axboe <jaxboe@fusionio.com>
                   Jens Axboe <axboe@fb.com>
[root@iZ116haf49sZ fio]#