X-Git-Url: https://git.kernel.dk/?p=fio.git;a=blobdiff_plain;f=README;h=0d7de7eb1ca7f5d02cc8713f68325a77632a8d7e;hp=bfed0ef7194ed4968c1b24ef76b40d8a797de61c;hb=4db4e3d7a52c4561e10af27650a6518e49ecfa7a;hpb=726f6ff06acd3a70b66c1badbc67cb833709b13c diff --git a/README b/README index bfed0ef7..0d7de7eb 100644 --- a/README +++ b/README @@ -54,11 +54,13 @@ Command line $ fio --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 --version Print version info and exit + --help Print this page + --cmdhelp=cmd Print command help, "all" for all of them Any parameters following the options will be assumed to be job files, unless they match a job file parameter. You can add as many as you want, @@ -78,6 +80,7 @@ is in the ini style format, as it's easy to read and write for the user. The job file parameters are: name=x Use 'x' as the identifier for this job. + description=x 'x' is a text description of the job. directory=x Use 'x' as the top level directory for storing files filename=x Force the use of 'x' as the filename for all files in this thread. If not given, fio will make up @@ -97,12 +100,13 @@ The job file parameters are: size=x Set file size to x bytes (x string can include k/m/g) ioengine=x 'x' may be: aio/libaio/linuxaio for Linux aio, posixaio for POSIX aio, sync for regular read/write io, - mmap for mmap'ed io, splice for using splice/vmsplice, - or sgio for direct SG_IO io. The latter 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. + mmap for mmap'ed io, syslet-rw for syslet driven + read/write, splice for using splice/vmsplice, + sgio for direct SG_IO io, or net for network io. sgio + 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 overwrite=x If 'x', layout a write file first. nrfiles=x Spread io load over 'x' number of files per job, @@ -122,7 +126,7 @@ The job file parameters are: 'x' blocks have been written. end_fsync=x If 'x', run fsync() after end-of-job. startdelay=x Start this thread x seconds after startup - timeout=x Terminate x seconds after startup. Can include a + runtime=x Terminate x seconds after startup. Can include a normal time suffix if not given in seconds, such as 'm' for minutes, 'h' for hours, and 'd' for days. offset=x Start io at offset x (x string can include k/m/g)