Add benchmark for SecureRandom and ThreadLocalRandom

turms-server-common/src/test/java/benchmark/im/turms/server/common/infra/reflect/SetAccessible.java

@@ -39,7 +39,6 @@
  *
  * @author James Chen
  */
-
 @Fork(value = 2, jvmArgsAppend = "--add-opens=java.base/java.lang=ALL-UNNAMED")
 @Warmup(iterations = 5, time = 1)
 @Measurement(iterations = 5, time = 2)

turms-server-common/src/test/java/benchmark/java/Random.java

@@ -0,0 +1,82 @@
+/*
+ * Copyright (C) 2019 The Turms Project
+ * https://github.com/turms-im/turms
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package benchmark.java;
+
+import java.security.NoSuchAlgorithmException;
+import java.security.SecureRandom;
+import java.util.concurrent.ThreadLocalRandom;
+import java.util.concurrent.TimeUnit;
+
+import org.openjdk.jmh.annotations.Benchmark;
+import org.openjdk.jmh.annotations.BenchmarkMode;
+import org.openjdk.jmh.annotations.Fork;
+import org.openjdk.jmh.annotations.Measurement;
+import org.openjdk.jmh.annotations.Mode;
+import org.openjdk.jmh.annotations.OutputTimeUnit;
+import org.openjdk.jmh.annotations.Scope;
+import org.openjdk.jmh.annotations.State;
+import org.openjdk.jmh.annotations.Warmup;
+
+/**
+ * Reference:
+ * <p>
+ * JMH version: 1.37
+ * <p>
+ * VM version: JDK 21, OpenJDK 64-Bit Server VM, 21+35-LTS
+ * <p>
+ * Random.secureRandom_nextBytes avgt 10 1292.702 ± 158.306 ns/op
+ * <p>
+ * Random.threadLocalRandom_nextBytes avgt 10 34.875 ± 3.729 ns/op
+ *
+ * @author James Chen
+ */
+@Fork(value = 2)
+@Warmup(iterations = 5, time = 1)
+@Measurement(iterations = 5, time = 2)
+@BenchmarkMode(Mode.AverageTime)
+@OutputTimeUnit(TimeUnit.NANOSECONDS)
+@State(Scope.Benchmark)
+public class Random {
+
+    private static final SecureRandom SECURE_RANDOM;
+
+    static {
+        try {
+            SECURE_RANDOM = SecureRandom.getInstance("DRBG");
+        } catch (NoSuchAlgorithmException e) {
+            throw new RuntimeException(e);
+        }
+    }
+
+    @Benchmark
+    public void threadLocalRandom_nextBytes() {
+        byte[] bytes = new byte[16];
+        // Note we don't cache "ThreadLocalRandom.current()" on purpose
+        // because most use cases of Turms will call "ThreadLocalRandom.current()"
+        // without cache to generate random values.
+        ThreadLocalRandom.current()
+                .nextBytes(bytes);
+    }
+
+    @Benchmark
+    public void secureRandom_nextBytes() {
+        byte[] bytes = new byte[16];
+        SECURE_RANDOM.nextBytes(bytes);
+    }
+
+}