GNU/Linux man pages
Livre :
Expressions régulières,
Syntaxe et mise en oeuvre :
GNU/Linux |
CentOS 3.3 |
|
 |
op_visualise(1) |
 |
op_visualise − graphically display and annotate oprofile sample files
op_visualise [ -Sdirectory ] [ --samples-directory=directory ] [ -Bdirectory ] [ --binaries-directory=directory ] [ -sfile ] [ --samples-file=file ] [ -bfile ] [ --executable=file ] [ -ifile ] [ --initialisation-file=file ] [ -h ] [ --help ]
op_visualise is a tool that helps you visualise and interpret the data that oprofile collects. Specifically, it:
|
• |
Graphically represents, and allows interaction with, the oprofile sample count histogram. | ||
|
• |
Allows the histogram to be captured in various formats (such as Postscript). | ||
|
• |
Displays information relevant to selected addresses. "OPTIONS DESCRIPTIONS" |
-S, --samples-directory=
Specifies the directory containing the oprofile samples. Defaults to /var/lib/oprofile/samples.
-B, --binaries-directory=
Specifies the root directory used to locate the executable file associated with a given sample file. This defaults to / (root). If it is set to any other directory name, that name is prepended to the filename associated with the sample file. For example, if the option
-B /home/moller/bin-archive
is specified and the executable being sampled is /bin/bash, op_visualise will look for /home/moller/bin-archive/bin/bash. This is to allow multiple copies of executables to be archived for comparison and analysis.
-s, --samples-file=
Specifies the oprofile sample file to be displayed. The file is located as usual, that is, either absolutely, if it starts with a ’’/’’, or with respect to the current working directory otherwise. op_visualise does not use the directory specified by the -S, --samples-directory= option (or its default) to locate the sample file. (The use of the --samples-directory= is described in the section describing the Set Sample Dir...(C-d) menu.)
-s, --executable=
Specifies the executable file against which to apply the samples file. Like the samples file this file is located as usual, without respect to the directory specified by the -B, --binaries-directory= option (or its default), the use of which is described in the section describing the Open Sample...(C-s) menu.
-i, --initialisation-file=
Specifies the name of an initialisation file that can be used to set any of the above options. The initialisation file consists of one or more text lines in the form of:
tag : value
where tag is one of:
samples-directory
binaries-directory
samples-file
executable
and value is the value to be associated with that tag.
The following is a description of the operations available under the main op_visualise menu.
FILE MENU
(M-F)
SET SAMPLE DIR...(C-D)
Opens a standard file selection dialog allowing you to
select the directory containing oprofile samples. (See the
description of the --samples-directory option
above.)
SET
EXECUTABLES ROOT...(C-R)
Opens a standard file selection dialog allowing you to
select the executable’s root directory. (See the
description of the --binaries-directory option
above.)
OPEN
SAMPLE...(C-S)
Opens a file selection dialog allowing you to select the an
oprofile sample file to display. The initial directory
displayed is the one identified by either the
--samples-directory option or the Set Sample
Dir...(C-d) menu.
After a file is selected, another dialog will be presented asking if the corresponding binary file should be opened as well.
SELECT
BINARY...(C-B)
Opens a file selection dialog allowing you to select the an
executable file to display. The initial directory displayed
is the one identified by either the
--binaries-directory option or the Set Executables
Root...(C-r) menu.
After a file is selected, another dialog will be presented asking if the corresponding samples file should be opened as well.
PRINT
CHART...(C-P)
Opens a dialog that allows you to capture the current
histogram as an image in any of a number of formats, such as
Postscript or GIF. (The exact options will vary depending on
what capabilities are installed; if no plot capabilities are
installed, this menu will not be available.)
QUIT
(C-Q)
Exit op_visualise.
HELP MENU
(M-H)
USAGE
Displays this manual.
ABOUT
Displays copyright and contact information.
SAMPLES
The Samples button is a shortcut to the Open
Sample...(C-s) menu. It is associated with a text
label identifying the selected file.
EXECUTABLES
The Samples button is a shortcut to the Select
Binary...(C-b) menu. It is associated with a text
label identifying the selected file.
The toolbar allows you to display data of various types.
FUNCTIONS
The Functions button (denoted by a
’’{}’’ glyph) opens a dialog listing
the functions that make up the executable currently
selected. Selecting a function name will narrow the
histogram display to include just that function. (The button
produces useful results only if the selected executable
contains debugging information.)
FILES
The Files button (denoted by a
’’File’’ glyph) opens a dialog
listing the files that compose the source of the executable
currently selected. Selecting a file name will narrow the
histogram display to include just that file. (The button
produces useful results only if the selected executable
contains debugging information.)
SYSTEM
The System button (denoted by a
’’Filesystem’’ glyph) opens a dialog
listing the executables for which samples exist in the
currently selected samples directory. (Future versions of
op_visualise may allow selection of any of the list entries
to specify a samples/executable pair.)
The status line displays errors or information relevant to the executable address associated with the current location of the pointer in the histogram window.
The histogram window graphically depicts the number of oprofile sample hits associated with each address contained in the selected executable. As the pointer is moved within this window, the status line will show such information as the number of hits, the function name, and the file name and line number associated with the address corresponding to the location of the pointer. (The precise nature of the information presented depends on what is available in the executable.)
The pointer buttons may be used to select the scope of the histogram. Button 1 will zoom in by a factor of 2 around the current location, button 3 will similarly zoom out, and button 2 will return the scope to encompass the entire executable.
|
op_visualise(1) | |