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.\"     Title: cg_annotate
.\"    Author: [see the "Author" section]
.\" Generator: DocBook XSL Stylesheets vsnapshot <http://docbook.sf.net/>
.\"      Date: 01/02/2024
.\"    Manual: cg_annotate
.\"    Source: Release 3.20.0
.\"  Language: English
.\"
.TH "CG_ANNOTATE" "1" "01/02/2024" "Release 3\&.20\&.0" "cg_annotate"
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.SH "NAME"
cg_annotate \- post\-processing tool for Cachegrind
.SH "SYNOPSIS"
.HP \w'\fBcg_annotate\fR\ 'u
\fBcg_annotate\fR [\fIoptions\fR] \fIcachegrind\-out\-file\fR [\fIsource\-files\fR...]
.SH "DESCRIPTION"
.PP
\fBcg_annotate\fR
takes an output file produced by the Valgrind tool Cachegrind and prints the information in an easy\-to\-read form\&.
.SH "OPTIONS"
.PP
\fB\-h \-\-help \fR
.RS 4
Show the help message\&.
.RE
.PP
\fB\-\-version \fR
.RS 4
Show the version number\&.
.RE
.PP
\fB\-\-show=A,B,C [default: all, using order in cachegrind\&.out\&.<pid>] \fR
.RS 4
Specifies which events to show (and the column order)\&. Default is to use all present in the
cachegrind\&.out\&.<pid>
file (and use the order in the file)\&. Useful if you want to concentrate on, for example, I cache misses (\fB\-\-show=I1mr,ILmr\fR), or data read misses (\fB\-\-show=D1mr,DLmr\fR), or LL data misses (\fB\-\-show=DLmr,DLmw\fR)\&. Best used in conjunction with
\fB\-\-sort\fR\&.
.RE
.PP
\fB\-\-sort=A,B,C [default: order in cachegrind\&.out\&.<pid>] \fR
.RS 4
Specifies the events upon which the sorting of the function\-by\-function entries will be based\&.
.RE
.PP
\fB\-\-threshold=X [default: 0\&.1%] \fR
.RS 4
Sets the threshold for the function\-by\-function summary\&. A function is shown if it accounts for more than X% of the counts for the primary sort event\&. If auto\-annotating, also affects which files are annotated\&.
.sp
Note: thresholds can be set for more than one of the events by appending any events for the
\fB\-\-sort\fR
option with a colon and a number (no spaces, though)\&. E\&.g\&. if you want to see each function that covers more than 1% of LL read misses or 1% of LL write misses, use this option:
.sp
\fB\-\-sort=DLmr:1,DLmw:1\fR
.RE
.PP
\fB\-\-show\-percs=<no|yes> [default: yes] \fR
.RS 4
When enabled, a percentage is printed next to all event counts\&. This helps gauge the relative importance of each function and line\&.
.RE
.PP
\fB\-\-auto=<no|yes> [default: yes] \fR
.RS 4
When enabled, automatically annotates every file that is mentioned in the function\-by\-function summary that can be found\&. Also gives a list of those that couldn\*(Aqt be found\&.
.RE
.PP
\fB\-\-context=N [default: 8] \fR
.RS 4
Print N lines of context before and after each annotated line\&. Avoids printing large sections of source files that were not executed\&. Use a large number (e\&.g\&. 100000) to show all source lines\&.
.RE
.PP
\fB\-I<dir> \-\-include=<dir> [default: none] \fR
.RS 4
Adds a directory to the list in which to search for files\&. Multiple
\fB\-I\fR/\fB\-\-include\fR
options can be given to add multiple directories\&.
.RE
.SH "SEE ALSO"
.PP
valgrind(1),
$INSTALL/share/doc/valgrind/html/index\&.html
or
http://www\&.valgrind\&.org/docs/manual/index\&.html\&.
.SH "AUTHOR"
.PP
Nicholas Nethercote\&.