More random fixes

[fio.git] / fio.1

diff --git a/fio.1 b/fio.1
index 2f60b5e88559ebf81e9462ae33affce8a513768e..cc86000de82e3bc8d386ea6f953b1410447fb7c1 100644 (file)
--- a/fio.1
+++ b/fio.1
@@ -40,6 +40,13 @@ be one of `always', `never' or `auto'.
 .BI \-\-cmdhelp \fR=\fPcommand
 Print help information for \fIcommand\fR.  May be `all' for all commands.
 .TP
+.BI \-\-debug \fR=\fPtype
+Enable verbose tracing of various fio actions. May be `all' for all types
+or individual types seperated by a comma (eg --debug=io,file). `help' will
+list all available tracing options.
+.TP
+Print help information for \fIcommand\fR.  May be `all' for all commands.
+.TP
 .B \-\-help
 Display usage information and exit.
 .TP
@@ -53,7 +60,9 @@ except `global', which has a special meaning.  Following the job name is
 a sequence of zero or more parameters, one per line, that define the
 behavior of the job.  Any line starting with a `;' or `#' character is
 considered a comment and ignored.
-job files.
+.P
+If \fIjobfile\fR is specified as `-', the job file will be read from
+standard input.
 .SS "Global Section"
 The global section contains default parameters for jobs specified in the
 job file.  A job is only affected by global sections residing above it,
@@ -87,7 +96,7 @@ sets of ranges, they are separated with a `,' or `/' character. For example:
 .SS "Parameter List"
 .TP
 .BI name \fR=\fPstr
-May be used to override the job name.  On the command line, this paramter
+May be used to override the job name.  On the command line, this parameter
 has the special purpose of signalling the start of a new job.
 .TP
 .BI description \fR=\fPstr
@@ -161,15 +170,26 @@ for files at random within the given range, limited to \fBsize\fR in total (if
 that is given). If \fBfilesize\fR is not specified, each created file is the
 same size.
 .TP
-.BI blocksize \fR=\fPsiint "\fR,\fB bs" \fR=\fPsiint
+.BI blocksize \fR=\fPsiint[,siint] "\fR,\fB bs" \fR=\fPsiint[,siint]
 Block size for I/O units.  Default: 4k.  Values for reads and writes can be
 specified seperately in the format \fIread\fR,\fIwrite\fR, either of
 which may be empty to leave that value at its default.
 .TP
-.BI blocksize_range \fR=\fPirange "\fR,\fB bsrange" \fR=\fPirange
+.BI blocksize_range \fR=\fPirange[,irange] "\fR,\fB bsrange" \fR=\fPirange[,irange]
 Specify a range of I/O block sizes.  The issued I/O unit will always be a
 multiple of the minimum size, unless \fBblocksize_unaligned\fR is set.  Applies
-to both reads and writes, but can be specified seperately (see \fBblocksize\fR).
+to both reads and writes if only one range is given, but can be specified
+seperately with a comma seperating the values. Example: bsrange=1k-4k,2k-8k.
+Also (see \fBblocksize\fR).
+.TP
+.BI bssplit \fR=\fPstr
+This option allows even finer grained control of the block sizes issued,
+not just even splits between them. With this option, you can weight various
+block sizes for exact control of the issued IO for a job that has mixed
+block sizes. The format of the option is bssplit=blocksize/percentage,
+optionally adding as many definitions as needed seperated by a colon.
+Example: bssplit=4k/10:64k/50:32k/40 would issue 50% 64k blocks, 10% 4k
+blocks and 40% 32k blocks.
 .TP
 .B blocksize_unaligned\fR,\fP bs_unaligned
 If set, any size in \fBblocksize_range\fR may be used.  This typically won't
@@ -209,6 +229,13 @@ Defines how the job issues I/O.  The following types are defined:
 Basic \fIread\fR\|(2) or \fIwrite\fR\|(2) I/O.  \fIfseek\fR\|(2) is used to
 position the I/O location.
 .TP
+.B psync
+Basic \fIpread\fR\|(2) or \fIpwrite\fR\|(2) I/O.
+.TP
+.B vsync
+Basic \fIreadv\fR\|(2) or \fIwritev\fR\|(2) I/O. Will emulate queuing by
+coalescing adjacents IOs into a single submission.
+.TP
 .B libaio
 Linux native asynchronous I/O.
 .TP
@@ -244,7 +271,7 @@ Transfer over the network.  \fBfilename\fR must be set appropriately to
 Like \fBnet\fR, but uses \fIsplice\fR\|(2) and \fIvmsplice\fR\|(2) to map data
 and send/receive.
 .TP
-.B cpu
+.B cpuio
 Doesn't transfer any data, but burns CPU cycles according to \fBcpuload\fR and
 \fBcpucycles\fR parameters.
 .TP