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dfbdaa28a5
Introduce `--profile` support to the benchmark helper script, which will invoke `perf` on Linux. Additionally, add a `--flamegraph` output option based on that.
99 lines
2.3 KiB
Perl
Executable File
99 lines
2.3 KiB
Perl
Executable File
#!/usr/bin/perl -w
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#
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# stackcollapse-elfutils Collapse elfutils stack (eu-stack) backtraces
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#
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# Parse a list of elfutils backtraces as generated with the poor man's
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# profiler [1]:
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#
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# for x in $(seq 1 "$nsamples"); do
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# eu-stack -p "$pid" "$@"
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# sleep "$sleeptime"
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# done
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#
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# [1] http://poormansprofiler.org/
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#
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# Copyright 2014 Gabriel Corona. All rights reserved.
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#
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# CDDL HEADER START
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#
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# The contents of this file are subject to the terms of the
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# Common Development and Distribution License (the "License").
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# You may not use this file except in compliance with the License.
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#
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# You can obtain a copy of the license at docs/cddl1.txt or
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# http://opensource.org/licenses/CDDL-1.0.
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# See the License for the specific language governing permissions
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# and limitations under the License.
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#
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# When distributing Covered Code, include this CDDL HEADER in each
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# file and include the License file at docs/cddl1.txt.
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# If applicable, add the following below this CDDL HEADER, with the
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# fields enclosed by brackets "[]" replaced with your own identifying
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# information: Portions Copyright [yyyy] [name of copyright owner]
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#
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# CDDL HEADER END
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use strict;
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use Getopt::Long;
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my $with_pid = 0;
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my $with_tid = 0;
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GetOptions('pid' => \$with_pid,
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'tid' => \$with_tid)
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or die <<USAGE_END;
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USAGE: $0 [options] infile > outfile\n
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--pid # include PID
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--tid # include TID
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USAGE_END
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my $pid = "";
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my $tid = "";
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my $current = "";
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my $previous_function = "";
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my %stacks;
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sub add_current {
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if(!($current eq "")) {
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my $entry;
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if ($with_tid) {
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$current = "TID=$tid;$current";
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}
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if ($with_pid) {
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$current = "PID=$pid;$current";
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}
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$stacks{$current} += 1;
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$current = "";
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}
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}
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while(<>) {
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chomp;
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if (m/^PID ([0-9]*)/) {
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add_current();
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$pid = $1;
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}
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elsif(m/^TID ([0-9]*)/) {
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add_current();
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$tid = $1;
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} elsif(m/^#[0-9]* *0x[0-9a-f]* (.*)/) {
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if ($current eq "") {
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$current = $1;
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} else {
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$current = "$1;$current";
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}
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} elsif(m/^#[0-9]* *0x[0-9a-f]*/) {
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if ($current eq "") {
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$current = "[unknown]";
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} else {
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$current = "[unknown];$current";
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}
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}
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}
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add_current();
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foreach my $k (sort { $a cmp $b } keys %stacks) {
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print "$k $stacks{$k}\n";
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}
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