http://brick.kernel.dk/snaps/
+There are also two official mirrors. Both of these are automatically synced
+with the main repository, when changes are pushed. If the main repo is down
+for some reason, either one of these is safe to use as a backup:
+
+ git://git.kernel.org/pub/scm/linux/kernel/git/axboe/fio.git
+ https://git.kernel.org/pub/scm/linux/kernel/git/axboe/fio.git
+
+or
+
+ git://github.com/axboe/fio.git
+ https://github.com/axboe/fio.git
+
Binary packages
---------------
'pkgutil -i fio'.
Windows:
-Bruce Cran <bruce@cran.org.uk> has fio packages for Windows at
+Rebecca Cran <rebecca+fio@bluestop.org> has fio packages for Windows at
http://www.bluestop.org/fio/ .
$ make CROSS_COMPILE=/path/to/toolchain/prefix
Configure will attempt to determine the target platform automatically.
+It's possible to build fio for ESX as well, use the --esx switch to
+configure.
+
Windows
-------
--parse-only Parse options only, don't start any IO
--output Write output to file
--runtime Runtime in seconds
- --latency-log Generate per-job latency logs
- --bandwidth-log Generate per-job bandwidth logs
+ --bandwidth-log Generate aggregate bandwidth logs
--minimal Minimal (terse) output
- --output-format=type Output format (terse,json,normal)
- --terse-version=type Terse version output format (default 3, or 2 or 4).
+ --output-format=type Output format (terse,json,json+,normal)
+ --terse-version=type Set terse version output format (default 3, or 2 or 4)
--version Print version info and exit
--help Print this page
--cpuclock-test Perform test/validation of CPU clock
+ --crctest=type 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
- --readonly Turn on safety read-only checks, preventing
- writes
--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.
Multiple sections can be specified.
- --alloc-size=kb Set smalloc pool to this size in kb (def 1024)
+ --alloc-size=kb Set smalloc pool to this size in kb (def 16384)
--warnings-fatal Fio parser warnings are fatal
- --max-jobs Maximum number of threads/processes to support
- --server=args Start backend server. See Client/Server section.
- --client=host Connect to specified backend.
+ --max-jobs=nr Maximum number of threads/processes to support
+ --server=args Start a backend fio server. See Client/Server section.
+ --client=hostname Talk to remote backend(s) fio server at hostname
+ --daemonize=pidfile Background fio server, write pid to file
+ --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).
+ 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
Any parameters following the options will be assumed to be job files,
time Dump info related to internal time keeping
net Dump info related to networking connections
rate Dump info related to IO rate switching
+ compress Dump info related to log compress/decompress
+ steadystate Dump info related to steady state detection
+ helperthread Dump info related to helper thread
? or help Show available debug options.
One can specify multiple debug options: e.g. --debug=file,mem will enable
The --alloc-size switch allows one to use a larger pool size for smalloc.
If running large jobs with randommap enabled, fio can run out of memory.
Smalloc is an internal allocator for shared structures from a fixed size
-memory pool. The pool size defaults to 1024k and can grow to 128 pools.
+memory pool. The pool size defaults to 16MiB and can grow to 8 pools.
NOTE: While running .fio_smalloc.* backing store files are visible in /tmp.
fio --client=<server1> <job file(s)> --client=<server2> <job file(s)>
+If the job file is located on the fio server, then you can tell the server
+to load a local file as well. This is done by using --remote-config:
+
+fio --client=server --remote-config /path/to/file.fio
+
+Then fio will open this local (to the server) job file instead
+of being passed one from the client.
+
+If you have many servers (example: 100 VMs/containers),
+you can input a pathname of a file containing host IPs/names as the parameter
+value for the --client option. For example, here is an example "host.list"
+file containing 2 hostnames:
+
+host1.your.dns.domain
+host2.your.dns.domain
+
+The fio command would then be:
+
+fio --client=host.list <job file(s)>
+
+In this mode, you cannot input server-specific parameters or job files -- all
+servers receive the same job file.
+
+In order to let fio --client runs use a shared filesystem
+from multiple hosts, fio --client now prepends the IP address of the
+server to the filename. For example, if fio is using directory /mnt/nfs/fio
+and is writing filename fileio.tmp, with a --client hostfile containing
+two hostnames h1 and h2 with IP addresses 192.168.10.120 and 192.168.10.121,
+then fio will create two files:
+
+ /mnt/nfs/fio/192.168.10.120.fileio.tmp
+ /mnt/nfs/fio/192.168.10.121.fileio.tmp
+
Platforms
---------
Fio works on (at least) Linux, Solaris, AIX, HP-UX, OSX, NetBSD, OpenBSD,
-Windows and FreeBSD. Some features and/or options may only be available on
-some of the platforms, typically because those features only apply to that
-platform (like the solarisaio engine, or the splice engine on Linux).
+Windows, FreeBSD, and DragonFly. Some features and/or options may only be
+available on some of the platforms, typically because those features only
+apply to that platform (like the solarisaio engine, or the splice engine on
+Linux).
Some features are not available on FreeBSD/Solaris even if they could be
implemented, I'd be happy to take patches for that. An example of that is
projects / fio.git / blobdiff