diff --git a/cmd/tools/fast/fast.v b/cmd/tools/fast/fast.v
index 82817d264a..d5d4b1baf4 100644
--- a/cmd/tools/fast/fast.v
+++ b/cmd/tools/fast/fast.v
@@ -56,6 +56,10 @@ fn main() {
 		}
 	}
 	println(last_commits)
+	if commits.len == 0 {
+		// Just benchmark the last commit if the tool hasn't been run for too long.
+		// commits = [commit_hash]
+	}
 	println('Commits to benchmark:')
 	println(commits)
 	for i, commit in commits {
@@ -66,10 +70,13 @@ fn main() {
 		exec('git checkout $commit')
 		println('  Building vprod...')
 		exec('v -o $vdir/vprod -prod $vdir/cmd/v')
-		diff1 := measure('$vdir/vprod -cc clang -o v.c $vdir/cmd/v', 'v.c')
+		diff1 := measure('$vdir/vprod -cc clang -o v.c -show-timings $vdir/cmd/v', 'v.c')
 		diff2 := measure('$vdir/vprod -cc clang -o v2 $vdir/cmd/v', 'v2')
 		diff3 := measure('$vdir/vprod -x64 $vdir/cmd/tools/1mil.v', 'x64 1mil')
 		diff4 := measure('$vdir/vprod -cc clang $vdir/examples/hello_world.v', 'hello.v')
+		vc_size := os.file_size('v.c') / 1000
+		// parse/check/cgen
+		parse, check, cgen := measure_steps(vdir)
 		// println('Building V took ${diff}ms')
 		commit_date := exec('git log -n1 --pretty="format:%at" $commit')
 		date := time.unix(commit_date.int())
@@ -84,6 +91,10 @@ fn main() {
 		<td>${diff2}ms</td>
 		<td>${diff3}ms</td>
 		<td>${diff4}ms</td>
+		<td>$vc_size KB</td>
+		<td>${parse}ms</td>
+		<td>${check}ms</td>
+		<td>${cgen}ms</td>
 	</tr>\n' +
 			table.trim_space()
 		out.writeln(table) ?
@@ -130,3 +141,17 @@ fn measure(cmd string, description string) int {
 	}
 	return int(sum / 3)
 }
+
+fn measure_steps(vdir string) (int, int, int) {
+	resp := os.exec('$vdir/vprod -o v.c -show-timings $vdir/cmd/v') or { panic(err) }
+	println('=======')
+	println(resp.output)
+	lines := resp.output.split_into_lines()
+	if lines.len != 3 {
+		return 0, 0, 0
+	}
+	parse := lines[0].before('.').int()
+	check := lines[1].before('.').int()
+	cgen := lines[2].before('.').int()
+	return parse, check, cgen
+}
diff --git a/cmd/tools/fast/header.html b/cmd/tools/fast/header.html
index d6e60afbac..250e9de348 100644
--- a/cmd/tools/fast/header.html
+++ b/cmd/tools/fast/header.html
@@ -52,4 +52,8 @@ Source code: <a target=blank href='https://github.com/vlang/v/blob/master/cmd/to
 		<td style='width:120px'>v -o v</td>
 		<td style='width:130px'>v -x64 1mil.v</td>
 		<td style='width:120px'>v hello.v</td>
+		<td style='width:120px'>v.c size</td>
+		<td style='width:120px'>parse</td>
+		<td style='width:120px'>check</td>
+		<td style='width:120px'>cgen</td>
 	</tr>
diff --git a/vlib/builtin/string.v b/vlib/builtin/string.v
index 17febaa2f7..4c19b305bd 100644
--- a/vlib/builtin/string.v
+++ b/vlib/builtin/string.v
@@ -1403,9 +1403,20 @@ pub fn (s &string) free() {
 	s.is_lit = -98761234
 }
 
+// before returns the contents before `dot` in the string.
+// Example: assert '23:34:45.234'.all_before('.') == '23:34:45'
+pub fn (s string) before(dot string) string {
+	pos := s.index_(dot)
+	if pos == -1 {
+		return s
+	}
+	return s[..pos]
+}
+
 // all_before returns the contents before `dot` in the string.
 // Example: assert '23:34:45.234'.all_before('.') == '23:34:45'
 pub fn (s string) all_before(dot string) string {
+	// TODO remove dup method
 	pos := s.index_(dot)
 	if pos == -1 {
 		return s