isolate benchmark

Author: isoos

app/bin/tools/isolate_search_benchmark.dart

@@ -0,0 +1,60 @@
+// Copyright (c) 2025, the Dart project authors.  Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'dart:math';
+
+import 'package:_pub_shared/search/search_form.dart';
+import 'package:pub_dev/search/search_service.dart';
+import 'package:pub_dev/service/entrypoint/_isolate.dart';
+import 'package:pub_dev/service/entrypoint/search_index.dart';
+
+// NOTE: please add more queries to this list, especially if there is a performance bottleneck.
+final queries = [
+  'sdk:dart',
+  'sdk:flutter platform:android',
+  'is:flutter-favorite',
+  'chart',
+  'json',
+  'camera',
+  'android camera',
+  'sql database',
+];
+
+Future<void> main(List<String> args) async {
+  print('Loading...');
+  final primaryRunner = await startSearchIsolate(snapshot: args.first);
+  final reducedRunner = await startSearchIsolate(
+    snapshot: args.first,
+    removeTextContent: true,
+  );
+  print('Loaded.');
+
+  for (var i = 0; i < 5; i++) {
+    await _benchmark(primaryRunner, primaryRunner);
+    await _benchmark(primaryRunner, reducedRunner);
+    print('--');
+  }
+
+  await primaryRunner.close();
+  await reducedRunner.close();
+}
+
+Future<void> _benchmark(IsolateRunner primary, IsolateRunner reduced) async {
+  final index = IsolateSearchIndex(primary, reduced);
+  final sw = Stopwatch()..start();
+  for (var i = 0; i < 10; i++) {
+    final random = Random(i);
+    final items = queries
+        .expand((q) => List.generate(10, (_) => q))
+        .map((q) => ServiceSearchQuery.parse(
+              query: q,
+              tagsPredicate: TagsPredicate.regularSearch(),
+            ))
+        .toList();
+    items.shuffle(random);
+    await Future.wait(items.map((q) async => index.search(q)));
+  }
+  sw.stop();
+  print(sw.elapsedMilliseconds);
+}

app/test/service/entrypoint/search_index_test.dart

@@ -53,10 +53,10 @@ void main() {
           reducedPath,
         );
 
-        reducedRunner = await startSearchIsolate(snapshot: reducedPath);
-
-        await primaryRunner.start(1);
-        await reducedRunner.start(1);
+        reducedRunner = await startSearchIsolate(
+          snapshot: reducedPath,
+          removeTextContent: true,
+        );
 
         // index calling the sendport
         final searchIndex = IsolateSearchIndex(primaryRunner, reducedRunner);