Windows
-------
-On Windows Cygwin (http://www.cygwin.com) is required with at least
-devel/gcc4 and devel/make installed in order to build fio, and
-admin/cygrunsrv to run it. You can also install devel/git to fetch/update
-the source files. To create an MSI installer package put a copy of Cygwin
-in os\windows\fio, install WiX 3.6 from http://wix.sourceforge.net/releases/
-and run dobuild.cmd from the os/windows directory.
-
-Before running fio you'll need to have a copy of cygserver running. Run
-"/usr/bin/cygserver-config" from an elevated Cygwin shell (i.e. launch the
-Cygwin shell under the Administrator account) to configure it. Once
-configured, run "net start cygserver" to start it, or type
-"/usr/sbin/cygserver &" in the Cygwin shell to start a local copy.
-
-If fio exits with the message "Bad system call" it normally means that
-Cygserver isn't running.
+On Windows MinGW (http://www.mingw.org/) is required in order to
+build fio. To create an MSI installer package install WiX 3.6 from
+http://wix.sourceforge.net/releases/ and run dobuild.cmd from the
+os/windows directory.
Command line
$ fio
--debug Enable some debugging options (see below)
--output Write output to file
- --timeout Runtime in seconds
+ --runtime Runtime in seconds
--latency-log Generate per-job latency logs
--bandwidth-log Generate per-job 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).
--version Print version info and exit
- --terse-version=type Terse version output format (default 3, or 2).
--help Print this page
--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
May be "always", "never" or "auto"
--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)
- --warnings-fatal Fio parser warnings are fatal
+ --alloc-size=kb Set smalloc pool to this size in kb (def 1024)
+ --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.
process Dump info related to processes
file Dump info related to file actions
- io Dump info related to IO queuing
- mem Dump info related to memory allocations
+ io Dump info related to IO queuing
+ mem Dump info related to memory allocations
blktrace Dump info related to blktrace setup
verify Dump info related to IO verification
- all Enable all debug options
+ all Enable all debug options
random Dump info related to random offset generation
parse Dump info related to option matching and parsing
diskutil Dump info related to disk utilization updates
readv/writev (with queuing emulation) mmap for mmap'ed
io, syslet-rw for syslet driven read/write, splice for
using splice/vmsplice, sg for direct SG_IO io, net
- for network io, or cpuio for a cycler burner load. sg
- only works on Linux on SCSI (or SCSI-like devices, such
- as usb-storage or sata/libata driven) devices. Fio also
- has a null io engine, which is mainly used for testing
+ for network io, rdma for RDMA io, or cpuio for a
+ cycler burner load. sg only works on Linux on
+ SCSI (or SCSI-like devices, such as usb-storage or
+ sata/libata driven) devices. Fio also has a null
+ io engine, which is mainly used for testing
fio itself.
iodepth=x For async io, allow 'x' ios in flight
ratecycle=x ratemin averaged over x msecs
cpumask=x Only allow job to run on CPUs defined by mask.
cpus_allowed=x Like 'cpumask', but allow text setting of CPU affinity.
+ numa_cpu_nodes=x,y-z Allow job to run on specified NUMA nodes' CPU.
+ numa_mem_policy=m:x,y-z Setup numa memory allocation policy.
+ 'm' stands for policy, such as local, interleave,
+ bind, prefer, local. 'x, y-z' are numa node(s) for
+ memory allocation according to policy.
fsync=x If writing with buffered IO, fsync after every
'x' blocks have been written.
end_fsync=x If 'x', run fsync() after end-of-job.
fio --server=args
on that machine, where args defines what fio listens to. The arguments
-are of the form 'type:hostname or IP:port'. 'type' is either 'ip' for
-TCP/IP, or 'sock' for a local unix domain socket. 'hostname' is either
-a hostname or IP address, and 'port' is the port to listen to (only valid
-for TCP/IP, not a local socket). Some examples:
+are of the form 'type,hostname or IP,port'. 'type' is either 'ip' (or ip4)
+for TCP/IP v4, 'ip6' for TCP/IP v6, or 'sock' for a local unix domain socket.
+'hostname' is either a hostname or IP address, and 'port' is the port to
+listen to (only valid for TCP/IP, not a local socket). Some examples:
1) fio --server
Start a fio server, listening on all interfaces on the default port (8765).
-2) fio --server=ip:hostname:4444
+2) fio --server=ip:hostname,4444
Start a fio server, listening on IP belonging to hostname and on port 4444.
-3) fio --server=:4444
+3) fio --server=ip6:::1,4444
+
+ Start a fio server, listening on IPv6 localhost ::1 and on port 4444.
+
+4) fio --server=,4444
Start a fio server, listening on all interfaces on port 4444.
-4) fio --server=1.2.3.4
+5) fio --server=1.2.3.4
Start a fio server, listening on IP 1.2.3.4 on the default port.
-5) fio --server=sock:/tmp/fio.sock
+6) fio --server=sock:/tmp/fio.sock
Start a fio server, listening on the local socket /tmp/fio.sock.
does on the server side, to allow IP/hostname/socket and port strings.
You can connect to multiple clients as well, to do that you could run:
-fio --client=server2 --client=server2 <job file(s)>
+fio --client=server2 <job file(s)> --client=server2 <job file(s)>
Platforms