axmap: fix bug in axmap_find_first_free()

[fio.git] / fio.1

diff --git a/fio.1 b/fio.1
index 26a4650432132345959bbaa09006015abfff6925..2f7728abd2462e8de6664ee1fa98fadcf99dfc41 100644 (file)
--- a/fio.1
+++ b/fio.1
@@ -50,9 +50,6 @@ List all commands defined by \fIioengine\fR, or print help for \fIcommand\fR def
 .BI \-\-showcmd \fR=\fPjobfile
 Convert \fIjobfile\fR to a set of command-line options.
 .TP
 .BI \-\-showcmd \fR=\fPjobfile
 Convert \fIjobfile\fR to a set of command-line options.
 .TP

-.B \-\-readonly
-Enable read-only safety checks.
-.TP

 .BI \-\-eta \fR=\fPwhen
 Specifies when real-time ETA estimate should be printed.  \fIwhen\fR may
 be one of `always', `never' or `auto'.
 .BI \-\-eta \fR=\fPwhen
 Specifies when real-time ETA estimate should be printed.  \fIwhen\fR may
 be one of `always', `never' or `auto'.


@@ -564,7 +561,7 @@ Also see the sync_file_range(2) man page.  This option is Linux specific.
 If writing, setup the file first and do overwrites.  Default: false.
 .TP
 .BI end_fsync \fR=\fPbool
 If writing, setup the file first and do overwrites.  Default: false.
 .TP
 .BI end_fsync \fR=\fPbool

-Sync file contents when job exits.  Default: false.
+Sync file contents when a write stage has completed.  Default: false.

 .TP
 .BI fsync_on_close \fR=\fPbool
 If true, sync file contents on close.  This differs from \fBend_fsync\fR in that
 .TP
 .BI fsync_on_close \fR=\fPbool
 If true, sync file contents on close.  This differs from \fBend_fsync\fR in that


@@ -1027,6 +1024,27 @@ given time in milliseconds.
 .BI disk_util \fR=\fPbool
 Generate disk utilization statistics if the platform supports it. Default: true.
 .TP
 .BI disk_util \fR=\fPbool
 Generate disk utilization statistics if the platform supports it. Default: true.
 .TP

+.BI clocksource \fR=\fPstr
+Use the given clocksource as the base of timing. The supported options are:
+.RS
+.TP
+.B gettimeofday
+gettimeofday(2)
+.TP
+.B clock_gettime
+clock_gettime(2)
+.TP
+.B cpu
+Internal CPU clock source
+.TP
+.RE
+.P
+\fBcpu\fR is the preferred clocksource if it is reliable, as it is very fast
+(and fio is heavy on time calls). Fio will automatically use this clocksource
+if it's supported and considered reliable on the system it is running on,
+unless another clocksource is specifically set. For x86/x86-64 CPUs, this
+means supporting TSC Invariant.
+.TP

 .BI gtod_reduce \fR=\fPbool
 Enable all of the gettimeofday() reducing options (disable_clat, disable_slat,
 disable_bw) plus reduce precision of the timeout somewhat to really shrink the
 .BI gtod_reduce \fR=\fPbool
 Enable all of the gettimeofday() reducing options (disable_clat, disable_slat,
 disable_bw) plus reduce precision of the timeout somewhat to really shrink the


@@ -1162,6 +1180,15 @@ For TCP network connections, tell fio to listen for incoming
 connections rather than initiating an outgoing connection. The
 hostname must be omitted if this option is used.
 .TP
 connections rather than initiating an outgoing connection. The
 hostname must be omitted if this option is used.
 .TP

+.BI (net, pingpong) \fR=\fPbool
+Normal a network writer will just continue writing data, and a network reader
+will just consume packages. If pingpong=1 is set, a writer will send its normal
+payload to the reader, then wait for the reader to send the same payload back.
+This allows fio to measure network latencies. The submission and completion
+latencies then measure local time spent sending or receiving, and the
+completion latency measures how long it took for the other end to receive and
+send back.
+.TP

 .BI (e4defrag,donorname) \fR=\fPstr
 File will be used as a block donor (swap extents between files)
 .TP
 .BI (e4defrag,donorname) \fR=\fPstr
 File will be used as a block donor (swap extents between files)
 .TP