fio.1: add section option and remove spurious command text

[fio.git] / fio.1

diff --git a/fio.1 b/fio.1
index adab043b893860b51a1dc97868ca94aae476850a..ef5c8d86faf2b6455992e4c375aac62b22aa8a88 100644 (file)
--- a/fio.1
+++ b/fio.1
@@ -37,9 +37,17 @@ Enable read-only safety checks.
 Specifies when real-time ETA estimate should be printed.  \fIwhen\fR may
 be one of `always', `never' or `auto'.
 .TP
 Specifies when real-time ETA estimate should be printed.  \fIwhen\fR may
 be one of `always', `never' or `auto'.
 .TP

+.BI \-\-section \fR=\fPsec
+Only run section \fIsec\fR from job file.
+.TP

 .BI \-\-cmdhelp \fR=\fPcommand
 Print help information for \fIcommand\fR.  May be `all' for all commands.
 .TP
 .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

 .B \-\-help
 Display usage information and exit.
 .TP
 .B \-\-help
 Display usage information and exit.
 .TP


@@ -163,15 +171,26 @@ 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
 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
 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
 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
 .TP
 .B blocksize_unaligned\fR,\fP bs_unaligned
 If set, any size in \fBblocksize_range\fR may be used.  This typically won't


@@ -214,6 +233,10 @@ position the I/O location.
 .B psync
 Basic \fIpread\fR\|(2) or \fIpwrite\fR\|(2) I/O.
 .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
 .B libaio
 Linux native asynchronous I/O.
 .TP