Compress base files, use c-style strings in benchmarks.HEADmaster

1 files changed, 0 insertions, 184 deletions

diff --git a/bm/bm_rebase.pl b/bm/bm_rebase.pl
deleted file mode 100644
index e89e7f5..0000000
--- a/bm/bm_rebase.pl
+++ /dev/null
@@ -1,184 +0,0 @@
-#!/usr/bin/perl
-use strict;
-use warnings;
-use File::Copy;
-use File::Spec;
-use File::Path qw(remove_tree make_path);
-use File::Find;
-use File::Basename;
-use Cwd qw(getcwd abs_path);
-use Time::HiRes qw(time);
-
-my ($files, $depth, $total_commits, $file_perc, $change_perc) = @ARGV;
-if (!defined $files || !defined $depth || !defined $total_commits || !defined $file_perc || !defined $change_perc) {
-	die "Usage: perl bm_rebase.pl <file_count> <depth> <total_commits> <file_perc> <change_perc>\n";
-}
-
-my $base_dir = getcwd();
-my $urn_bin  = abs_path(File::Spec->catfile("..", "urn")); 
-my $seed_bin = abs_path("seed.pl");
-my $bm_repo  = "sandbox";
-
-my $sample_rate = int($total_commits / 5) || 1;
-my %results;
-my $initial_repo_size = "0 KB";
-my $rebase_count = 0;
-my %last_base_hashes;
-
-my $global_tick = 0;
-
-sub get_size {
-	my $dir = shift;
-	return "0 KB" unless -d $dir;
-	my $size = `du -sk $dir 2>/dev/null`;
-	$size =~ /^(\d+)/;
-	return ($1 || 0) . " KB";
-}
-
-sub count_inodes {
-	my $dir = shift;
-	return 0 unless -d $dir;
-	my $count = `find $dir 2>/dev/null | wc -l`;
-	$count =~ s/\s+//g;
-	return $count || 0;
-}
-
-sub track_rebases {
-	return unless -f ".urn/index";
-	open(my $fh, '<', ".urn/index") or return;
-	while (<$fh>) {
-		chomp;
-		my @cols = split(/\t/);
-		next unless @cols >= 6;
-		my ($b_hash, $path) = ($cols[2], $cols[5]);
-		if (exists $last_base_hashes{$path} && $last_base_hashes{$path} ne $b_hash) {
-			$rebase_count++;
-		}
-		$last_base_hashes{$path} = $b_hash;
-	}
-	close($fh);
-}
-
-sub run_rebase_benchmark {
-	my ($tool_name) = @_;
-	print ">>> Starting REBASE BENCHMARK: $tool_name\n";
-
-	remove_tree($bm_repo) if -d $bm_repo;
-	system("perl $seed_bin $files $depth > /dev/null 2>&1");
-	
-	if ($initial_repo_size eq "0 KB") { $initial_repo_size = get_size($bm_repo); }
-	
-	chdir($bm_repo) or die $!;
-
-	my $init_cmd = ($tool_name eq "URN") ? "perl $urn_bin init" : "git init";
-	my $add_cmd  = ($tool_name eq "URN") ? "perl $urn_bin add ." : "git add .";
-	
-	system("$init_cmd > /dev/null 2>&1");
-	system("$add_cmd > /dev/null 2>&1");
-	system(($tool_name eq "URN" ? "perl $urn_bin" : "git") . " commit -m 'initial' > /dev/null 2>&1");
-	
-	track_rebases() if $tool_name eq "URN";
-
-	my @file_list;
-	find(sub { push @file_list, $File::Find::name if -f $_ && $File::Find::name !~ /\.(git|urn)/ }, ".");
-
-	my $num_to_change = int(scalar(@file_list) * ($file_perc / 100)) || 1;
-	my @target_files = @file_list[0 .. $num_to_change - 1];
-
-	for my $i (2 .. $total_commits) {
-		my $debug_dir = "/tmp/urn/commit_$i";
-		make_path($debug_dir) unless -d $debug_dir;
-
-		for my $target (@target_files) {
-			open(my $fh, '<:raw', $target) or die "Read fail: $target - $!";
-    		my $content = do { local $/; <$fh> };
-    		close($fh);
-
-    		$global_tick++;
-    		my $ts = time();
-    		my $header = "C$i-T$ts-N$global_tick ";
-    		
-    		my $total_bytes = length($content);
-    		my $min_len = length($header);
-    		my $to_change = int($total_bytes * ($change_perc / 100));
-
-    		$to_change = $min_len if $to_change < $min_len;
-    		$to_change = $total_bytes if $to_change > $total_bytes;
-
-    		my $new_segment = substr($header . ("." x $to_change), 0, $to_change);
-    		substr($content, 0, $to_change, $new_segment);
-
-    		open(my $out, '>:raw', $target) or die "Write fail: $target - $!";
-    		print $out $content;
-    		close($out);
-
-			my $target_name = basename($target);
-			copy($target, "$debug_dir/$target_name") or warn "Backup failed: $!";
-    		
-    		utime(undef, undef, $target);
-		}
-
-		my $cmd = ($tool_name eq "URN") 
-			? "perl $urn_bin add . && perl $urn_bin commit -m 'c$i'" 
-			: "git add . && git commit -m 'c$i'";
-
-		if ($i % $sample_rate == 0 || $i == $total_commits) {
-			my $raw_output = `/usr/bin/time -l sh -c "$cmd" 2>&1`;
-
-			if ($tool_name eq "URN") {
-				track_rebases();
-			}
-
-			my ($real, $rss, $maj, $min) = (0, 0, 0, 0);
-			$real = $1 if $raw_output =~ /(\d+\.\d+)\s+real/;
-			$rss = sprintf("%.2f MB", $1 / 1024 / 1024) if $raw_output =~ /(\d+)\s+maximum resident set size/;
-			$min = $1 if $raw_output =~ /(\d+)\s+page reclaims/;
-			$maj = $1 if $raw_output =~ /(\d+)\s+page faults/;
-
-			my $meta = ($tool_name eq "URN") ? ".urn" : ".git";
-			$results{$i}{$tool_name} = {
-				real   => $real . "s",
-				rss    => $rss,
-				faults => "Maj:$maj / Min:$min",
-				inodes => count_inodes($meta),
-				size   => get_size($meta),
-			};
-			print "   [Commit $i] $tool_name sampled.\n";
-		} else {
-			system("$cmd > /dev/null 2>&1");
-			track_rebases() if $tool_name eq "URN";
-		}
-	}
-	chdir($base_dir);
-}
-
-$rebase_count = 0;
-%last_base_hashes = ();
-run_rebase_benchmark("URN");
-run_rebase_benchmark("GIT");
-
-my $out_file = "BM_REBASE_${files}_${total_commits}.txt";
-open(my $res, '>', $out_file) or die $!;
-print $res "=============================================================\n";
-print $res " REBASE BENCHMARK: $files files ($total_commits commits)\n";
-print $res " CONDITIONS: Depth=$depth, Files Mod=$file_perc%, Change=$change_perc%\n";
-print $res "=============================================================\n\n";
-
-foreach my $i (sort { $a <=> $b } keys %results) {
-	my $u = $results{$i}{"URN"};
-	my $g = $results{$i}{"GIT"};
-	print $res "SNAPSHOT: Commit #$i\n";
-	print $res "-------------------------------------------------------------\n";
-	printf $res "%-15s | %-20s | %-20s\n", "METRIC", "URN", "GIT";
-	print $res "----------------+----------------------+---------------------\n";
-	printf $res "%-15s | %20s | %20s\n", "Time", $u->{real}, $g->{real};
-	printf $res "%-15s | %20s | %20s\n", "Max RSS", $u->{rss}, $g->{rss};
-	printf $res "%-15s | %20s | %20s\n", "Page faults", $u->{faults}, $g->{faults};
-	printf $res "%-15s | %20s | %20s\n", "Inodes", $u->{inodes}, $g->{inodes};
-	printf $res "%-15s | %20s | %20s\n", "Repo size", $u->{size}, $g->{size};
-	print $res "-------------------------------------------------------------\n\n";
-}
-print $res "TOTAL URN REBASES: $rebase_count\n";
-close($res);
-
-exec "less $out_file";