forked from lix-project/lix
Remove scripts/show-duplication.pl
Was added in 2006 to "measure the cost of the Nix approach". Given that it uses /usr/bin/perl, I think this is safe to remove.
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@ -1,73 +0,0 @@
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#! /usr/bin/perl -w
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if (scalar @ARGV != 1) {
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print "syntax: show-duplication.pl PATH\n";
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exit 1;
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}
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my $root = $ARGV[0];
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my $nameRE = "(?:(?:[A-Za-z0-9\+\_]|(?:-[^0-9]))+)";
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my $versionRE = "(?:[A-Za-z0-9\.\-]+)";
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my %pkgInstances;
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my $pid = open(PATHS, "-|") || exec "nix-store", "-qR", $root;
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while (<PATHS>) {
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chomp;
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/^.*\/[0-9a-z]*-(.*)$/;
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my $nameVersion = $1;
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$nameVersion =~ /^($nameRE)(-($versionRE))?$/;
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$name = $1;
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$version = $3;
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$version = "(unnumbered)" unless defined $version;
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# print "$nameVersion $name $version\n";
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push @{$pkgInstances{$name}}, {version => $version, path => $_};
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}
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close PATHS or exit 1;
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sub pathSize {
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my $path = shift;
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my @st = lstat $path or die;
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my $size = $st[7];
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if (-d $path) {
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opendir DIR, $path or die;
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foreach my $name (readdir DIR) {
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next if $name eq "." || $name eq "..";
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$size += pathSize("$path/$name");
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}
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}
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return $size;
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}
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my $totalPaths = 0;
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my $totalSize = 0, $totalWaste = 0;
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foreach my $name (sort {scalar @{$pkgInstances{$b}} <=> scalar @{$pkgInstances{$a}}} (keys %pkgInstances)) {
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print "$name ", scalar @{$pkgInstances{$name}}, "\n";
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my $allSize = 0;
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foreach my $x (sort {$a->{version} cmp $b->{version}} @{$pkgInstances{$name}}) {
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$totalPaths++;
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my $size = pathSize $x->{path};
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$allSize += $size;
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print " $x->{version} $size\n";
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}
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my $avgSize = int($allSize / scalar @{$pkgInstances{$name}});
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my $waste = $allSize - $avgSize;
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$totalSize += $allSize;
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$totalWaste += $waste;
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print " average $avgSize, waste $waste\n";
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}
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my $avgDupl = $totalPaths / scalar (keys %pkgInstances);
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my $wasteFactor = ($totalWaste / $totalSize) * 100;
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print "average package duplication $avgDupl, total size $totalSize, total waste $totalWaste, $wasteFactor% wasted\n";
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