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authorEdward Shishkin <edward@redhat.com>2010-10-22 20:52:29 +0200
committerJens Axboe <jaxboe@fusionio.com>2010-10-22 20:54:11 +0200
commit5798ffb25496ab8dcb419a2bdc5418802d7f10fc (patch)
tree856e41765d49e27a1e42027311874fe1f387c6b3
parentb86071c5e8264cd57dd631b238c7fd6a256570ec (diff)
downloadblktrace-5798ffb25496ab8dcb419a2bdc5418802d7f10fc.tar.gz
blktrace-5798ffb25496ab8dcb419a2bdc5418802d7f10fc.tar.bz2
blktrace: btt documentation update
Fixup for RH bugzilla 595628. Document btt options: -m (--seeks-per-second); -X (--easy-parse-avgs). Signed-off-by: Edward Shishkin <edward@redhat.com> Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
-rw-r--r--doc/btt.121
1 files changed, 21 insertions, 0 deletions
diff --git a/doc/btt.1 b/doc/btt.1
index 60d28ac..28cf912 100644
--- a/doc/btt.1
+++ b/doc/btt.1
@@ -30,6 +30,8 @@ btt \- analyse block i/o traces produces by blktrace
.br
[ \-L <\fIfreq\fR> | \-\-periodic\-latencies=<\fIfreq\fR> ]
.br
+[ \-m <\fIoutput name\fR> | \-\-seeks\-per\-second=<\fIoutput name\fR> ]
+.br
[ \-M <\fIdev map\fR> | \-\-dev\-maps=<\fIdev map\fR>
.br
[ \-o <\fIoutput name\fR> | \-\-output\-file=<\fIoutput name\fR> ]
@@ -58,6 +60,8 @@ btt \- analyse block i/o traces produces by blktrace
.br
[ \-V | \-\-version ]
.br
+[ \-X | \-\-easy\-parse\-avgs ]
+.br
[ \-z <\fIoutput name\fR> | \-\-q2d\-latencies=<\fIoutput name\fR> ]
.br
[ \-Z | \-\-do\-active ]
@@ -201,6 +205,15 @@ Q2C and D2C latencies. The frequency specified will regulate how often
an average latency is output -- a floating point value expressing seconds.
.RE
+.B \-m <\fIoutput name\fR>
+.br
+.B \-\-seeks\-per\-second=<\fIoutput name\fR>
+.RS 4
+Trigger btt to output seeks-per-second information. The first column will
+contain a time value (seconds), and the second column will indicate the
+number of seeks per second at that point.
+.RE
+
.B \-M <\fIdev map\fR>
.br
.B \-\-dev\-maps=<\fIdev map\fR>
@@ -332,6 +345,14 @@ Shows the version of btt.
Requests a more verbose output.
.RE
+.B \-X
+.br
+.B \-\-easy\-parse\-avgs
+.RS 4
+Provide data in an easy-to-parse form and write it to a file
+with .avg exentsion
+.RE
+
.B \-z <\fIoutput name\fR>
.br
.B \-\-q2d\-latencies=<\fIoutput name\fR>