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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.
73 lines
1.9 KiB
Perl
Executable File
73 lines
1.9 KiB
Perl
Executable File
#!/usr/bin/perl -w
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#
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# stackcollapse-bpftrace.pl collapse bpftrace samples into single lines.
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#
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# USAGE ./stackcollapse-bpftrace.pl infile > outfile
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#
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# Example input:
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#
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# @[
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# _raw_spin_lock_bh+0
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# tcp_recvmsg+808
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# inet_recvmsg+81
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# sock_recvmsg+67
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# sock_read_iter+144
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# new_sync_read+228
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# __vfs_read+41
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# vfs_read+142
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# sys_read+85
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# do_syscall_64+115
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# entry_SYSCALL_64_after_hwframe+61
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# ]: 3
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#
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# Example output:
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#
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# entry_SYSCALL_64_after_hwframe+61;do_syscall_64+115;sys_read+85;vfs_read+142;__vfs_read+41;new_sync_read+228;sock_read_iter+144;sock_recvmsg+67;inet_recvmsg+81;tcp_recvmsg+808;_raw_spin_lock_bh+0 3
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#
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# Copyright 2018 Peter Sanford. All rights reserved.
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#
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public License
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# as published by the Free Software Foundation; either version 2
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# of the License, or (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software Foundation,
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# Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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#
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# (http://www.gnu.org/copyleft/gpl.html)
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#
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use strict;
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my @stack;
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my $in_stack = 0;
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foreach (<>) {
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chomp;
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if (!$in_stack) {
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if (/^@\[$/) {
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$in_stack = 1;
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} elsif (/^@\[,\s(.*)\]: (\d+)/) {
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print $1 . " $2\n";
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}
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} else {
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if (m/^,?\s?(.*)\]: (\d+)/) {
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if (length $1) {
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push(@stack, $1);
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}
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print join(';', reverse(@stack)) . " $2\n";
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$in_stack = 0;
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@stack = ();
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} else {
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$_ =~ s/^\s+//;
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push(@stack, $_);
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}
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}
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}
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