diff --git a/tests/segment.php b/tests/segment.php
index a2dd520..b367d89 100644
--- a/tests/segment.php
+++ b/tests/segment.php
@@ -8,6 +8,11 @@
 	The requests are randomly picked from the array of routes.
 */
 
+// if there's a flag, reset the opcache
+if (in_array('-f', $argv)) {
+	opcache_reset();
+}
+
 require_once 'tools.php';
 
 $r = new SegmentRouter();
diff --git a/tests/simple.php b/tests/simple.php
index 6e66916..72f3aa8 100644
--- a/tests/simple.php
+++ b/tests/simple.php
@@ -1,5 +1,18 @@
 <?php
 
+/*
+	This test file puts the SimpleRouter to the test by running a million lookups on a handful
+	of routes. The routes are read from two files, blog.txt and github.txt, and added to two separate
+	routers and two separate arrays. The lookups are then run in two separate loops, one for each router.
+	Each lookup is timed and the memory usage is also printed out at regular intervals.
+	The requests are randomly picked from the array of routes.
+*/
+
+// if there's a flag, reset the opcache
+if (in_array('-f', $argv)) {
+	opcache_reset();
+}
+
 require_once 'tools.php';
 require_once __DIR__ . '/../SimpleRouter.php';
 
@@ -17,13 +30,15 @@ sRunIterations(10000, $github);
 sRunIterations(100000, $github);
 sRunIterations(1000000, $github);
 
-// Big test
-SimpleRouter::clearRoutes();
-$big = sReadAndAddRoutes('big.txt');
-echoTitle("Starting big lookups");
-sRunIterations(10000, $big);
-sRunIterations(100000, $big);
-sRunIterations(1000000, $big);
+// Big test; since simplerouter is so much slower, we'll only run the big test if the -b flag is passed
+if (in_array('-b', $argv)) {
+	SimpleRouter::clearRoutes();
+	$big = sReadAndAddRoutes('big.txt');
+	echoTitle("Starting big lookups");
+	sRunIterations(10000, $big);
+	sRunIterations(100000, $big);
+	sRunIterations(1000000, $big);
+}
 
 function sReadAndAddRoutes(string $file): array
 {
diff --git a/tests/trie.php b/tests/trie.php
index a7b30c3..3c257d2 100644
--- a/tests/trie.php
+++ b/tests/trie.php
@@ -8,6 +8,11 @@
 	The requests are randomly picked from the array of routes.
 */
 
+// if there's a flag, reset the opcache
+if (in_array('-f', $argv)) {
+	opcache_reset();
+}
+
 require_once 'tools.php';
 
 $r = new TrieRouter();