diff --git a/tools/performance/layout/collect.pl b/tools/performance/layout/collect.pl
new file mode 100644
index 000000000000..c86fca702de6
--- /dev/null
+++ b/tools/performance/layout/collect.pl
@@ -0,0 +1,130 @@
+#!/usr/bin/perl -w
+
+%::Sites = ();
+
+@::Categories = (
+    Content,
+    Reflow,
+    Frame,
+    Style,
+    Parse,
+    DTD,
+    Tokenize,
+    Total
+    );
+
+$::CurrentSite = "";
+
+LINE: while (<>) {
+    if (/^\*\*\* Timing layout processes on url: '(.*)'/) {
+        # This will generate a URL that looks something like:
+        #
+        #   file:///foo/bar/website/index.html
+        #
+        # So, we'll parse out the ``website'' part...
+        my @parts = split('/', $1);
+        $::CurrentSite = $parts[$#parts - 1];
+
+        if (! $::Sites{$::CurrentSite}) {
+            $::Sites{$::CurrentSite} = {};
+        }
+        next LINE;
+    }
+
+    next LINE unless $::CurrentSite;
+
+    CATEGORY: foreach $category (@::Categories) {
+        next CATEGORY unless (/$category/);
+
+        # The "real time" is indicated in HH:MM:SS.mmmm format
+        my ($h,$m,$s,$ms) = /Real time (..):(..):(..)\.(....)/;
+        my $real = $ms;
+        $real += $s * 1000;
+        $real += $m * 1000 * 60;
+        $real += $h * 1000 * 60 * 60;
+
+        # The "CPU time" is indicated in m.uuu format
+        my ($cpu) = /CP time (.*\....)/;
+
+        my $site = $::Sites{$::CurrentSite};
+        if (! $site->{$category}) {
+            $site->{$category} = { Count => 0, Real => 0, CPU => 0, Real2 => 0, CPU2 => 0 };
+        }
+
+        $site->{$category}->{Count} += 1;
+        $site->{$category}->{Real}  += $real;
+        $site->{$category}->{CPU}   += $cpu;
+        $site->{$category}->{Real2} += $real * $real;
+        $site->{$category}->{CPU2}  += $cpu * $cpu;
+    }
+}
+
+my $bgcolor0 = '#999999';
+my $bgcolor1 = '#777777';
+
+my $bgcolor;
+
+print "<table border='0' cellpadding='2' cellspacing='0'>\n";
+
+print "<tr>\n";
+print "  <td rowspan='2' valign='bottom'>Site</td>\n";
+
+$bgcolor = $bgcolor0;
+foreach $category (@::Categories) {
+    print "  <td bgcolor='$bgcolor' align='center' colspan='4'>$category</td>\n";
+    $bgcolor = ($bgcolor eq $bgcolor0) ? $bgcolor1 : $bgcolor0;
+}
+print "</tr>\n";
+
+print "<tr>\n";
+
+$bgcolor = $bgcolor0;
+foreach $category (@::Categories) {
+    print "  <td bgcolor='$bgcolor' align='center' colspan='2'>CPU</td> <td bgcolor='$bgcolor' align='center' colspan='2'>Real</td>\n";
+    $bgcolor = ($bgcolor eq $bgcolor0) ? $bgcolor1 : $bgcolor0;
+}
+print "</tr>\n";
+
+foreach $sitename (sort(keys(%::Sites))) {
+    print "<tr>\n";
+
+    my $site = $::Sites{$sitename};
+    print "  <td>$sitename</td>\n";
+
+    $bgcolor = $bgcolor0;
+    foreach $category (@::Categories) {
+        my $count = $site->{$category}->{Count};
+        my $real  = $site->{$category}->{Real};
+        my $cpu   = $site->{$category}->{CPU};
+        my $real2 = $site->{$category}->{Real2};
+        my $cpu2  = $site->{$category}->{CPU2};
+
+        my $realdev = 0;
+        my $cpudev = 0;
+
+        if ($count) {
+            if ($count > 1) {
+                $realdev = sqrt( ( $real2 * $count - $real * $real ) / ( $count * ( $count - 1 ) ) );
+                $cpudev  = sqrt( ( $cpu2 * $count - $cpu * $cpu ) / ( $count * ( $count - 1 ) ) );
+            }
+
+            $real /= $count;
+            $cpu /= $count;
+        }
+        else {
+            $count = 0;
+            $real = 0;
+            $cpu = 0;
+        }
+
+        printf "  <td bgcolor='$bgcolor' align='right'>%0.2lf</td><td bgcolor='$bgcolor' align='left'>&plusmn;%0.2lf</td>\n", $cpu, $cpudev;
+        printf "  <td bgcolor='$bgcolor' align='right'>%0.2lf</td><td bgcolor='$bgcolor' align='left'>&plusmn;%0.2lf</td>", $real, $realdev;
+
+        $bgcolor = ($bgcolor eq $bgcolor0) ? $bgcolor1 : $bgcolor0;
+    }
+
+    print "</tr>\n";
+}
+
+print "</table>\n";
+