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- #!/usr/bin/perl
- # Parse a massif.out.xxx file and output peak total memory usage
- use warnings;
- use strict;
- use utf8;
- use open qw(:std utf8);
- die unless @ARGV == 1;
- my @snaps;
- open my $fh, '<', $ARGV[0] or die;
- { local $/ = 'snapshot='; @snaps = <$fh>; }
- close $fh or die;
- my ($max, $max_heap, $max_he, $max_stack) = (0, 0, 0, 0);
- for (@snaps)
- {
- my ($heap, $heap_extra, $stack) = m{
- mem_heap_B=(\d+)\n
- mem_heap_extra_B=(\d+)\n
- mem_stacks_B=(\d+)
- }xm;
- next unless defined $heap;
- my $total = $heap + $heap_extra + $stack;
- if( $total > $max ) {
- ($max, $max_heap, $max_he, $max_stack) = ($total, $heap, $heap_extra, $stack);
- }
- }
- printf "$max (heap $max_heap+$max_he, stack $max_stack)\n";
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