# 鲲鹏镜像站下载毕昇JDK8
wget https://mirrors.huaweicloud.com/kunpeng/archive/compiler/bisheng_jdk/bisheng-jdk-8u442-linux-aarch64.tar.gz

mkdir -p /usr/local/bisheng-jdk
tar -zxvf bisheng-jdk-8u442-linux-aarch64.tar.gz -C /usr/local/bisheng-jdk

vi /etc/profile
# 文末添加以下配置
export JAVA_HOME=/usr/local/bisheng-jdk
export JRE_HOME=$JAVA_HOME/jre
export CLASSPATH=.:$JAVA_HOME/lib:$JRE_HOME/lib
export PATH=$JAVA_HOME/bin:$PATH

# 刷新环境变量
source /etc/profile

java -version

modprobe kae

vi $JAVA_HOME/jre/lib/security/java.security

# 新建JDK优化配置脚本，整合鲲鹏专属参数
export JAVA_OPTS="-XX:+G1Uncommit -XX:MaxHeapFreeRatio=50 -XX:+TieredCompilation -XX:ReservedCodeCacheSize=240M -XX:+UseCompactObjectHeaders"

mkdir -p /home/test/jdk-demo
cd /home/test/jdk-demo
vim KaeSpeedTest.java

# 编译代码
javac KaeSpeedTest.java
# 启用鲲鹏优化参数运行程序
java $JAVA_OPTS KaeSpeedTest

profiler.sh -d 30 -f cpu_flame.html $(pgrep java)

jcmd $(pgrep java) VM.native_memory detail.diff

grep Uncommit /var/log/jvm/gc.log

import java.security.MessageDigest;
import java.security.Security;
import java.util.Arrays;

/**
 * 鲲鹏毕昇JDK性能测试类
 * 核心功能：1.验证KAE硬件加解密加速 2.模拟内存压力测试 3.统计性能指标
 * 适配架构：鲲鹏AArch64
 * 运行环境：毕昇JDK8
 */
public class KaeSpeedTest {
    // 循环测试次数，模拟高并发场景
    private static final int LOOP_COUNT = 100000;
    // 测试数据
    private static final String TEST_DATA = "Kunpeng-Bisheng-JDK-Optimize-Test-2026";

    public static void main(String[] args) {
        // 1. 打印鲲鹏JDK环境信息
        printEnvInfo();

        // 2. 检测KAE硬件加速是否生效
        boolean kaeEnable = checkKaeProvider();
        System.out.println("鲲鹏KAE硬件加速状态：" + (kaeEnable ? "已开启" : "未开启"));

        // 3. 国密SM3算法性能测试
        long sm3Cost = testSM3Encrypt();
        System.out.println("SM3加密10万次总耗时：" + sm3Cost + "ms");

        // 4. 内存压力测试，触发G1弹性回收
        testMemoryPressure();

        System.out.println("鲲鹏毕昇JDK性能测试完成！");
    }

    /**
     * 打印鲲鹏架构与JDK版本信息
     */
    private static void printEnvInfo() {
        String arch = System.getProperty("os.arch");
        String vendor = System.getProperty("java.vendor");
        String version = System.getProperty("java.version");
        System.out.println("系统架构：" + arch);
        System.out.println("JDK厂商：" + vendor);
        System.out.println("JDK版本：" + version);
    }

    /**
     * 校验KAE硬件加速提供者是否加载成功
     */
    private static boolean checkKaeProvider() {
        return Arrays.asList(Security.getProviders()).stream()
                .anyMatch(provider -> "KAEProvider".equals(provider.getName()));
    }

    /**
     * SM3国密算法加密测试（鲲鹏KAE硬件加速）
     */
    private static long testSM3Encrypt() {
        long start = System.currentTimeMillis();
        try {
            // 初始化SM3国密算法实例
            MessageDigest md = MessageDigest.getInstance("SM3");
            byte[] data = TEST_DATA.getBytes();
            for (int i = 0; i < LOOP_COUNT; i++) {
                md.update(data);
                md.digest();
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
        return System.currentTimeMillis() - start;
    }

    /**
     * 内存压力测试，创建大量临时对象，触发GC与弹性内存回收
     */
    private static void testMemoryPressure() {
        for (int i = 0; i < 50; i++) {
            // 创建1000个大字节数组，模拟业务内存占用
            byte[][] tempData = new byte[1000][1024];
            try {
                Thread.sleep(100);
            } catch (InterruptedException e) {
                Thread.currentThread().interrupt();
            }
        }
        System.gc();
        System.out.println("内存压力测试完成，触发主动GC");
    }
}