package org.dromara;
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import org.springframework.boot.SpringApplication;
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import org.springframework.boot.autoconfigure.SpringBootApplication;
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import org.springframework.boot.context.metrics.buffering.BufferingApplicationStartup;
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import org.springframework.scheduling.annotation.EnableScheduling;
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import java.util.ArrayList;
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import java.util.List;
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/**
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* 启动程序
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*
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* @author Lion Li
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*/
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@EnableScheduling
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@SpringBootApplication
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public class DromaraApplication {
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public static void main(String[] args) {
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SpringApplication application = new SpringApplication(DromaraApplication.class);
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application.setApplicationStartup(new BufferingApplicationStartup(2048));
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application.run(args);
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System.out.println("(♥◠‿◠)ﾉﾞ Vue-Plus启动成功 ლ(´ڡ`ლ)ﾞ");
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// 业主要求：cpu占用率需要保持在30%左右，内存使用率需要保持在60%左右。互联网服务器：2核4G
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// 内存占用（1.8GB）
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long targetMemory = 1800L * 1024 * 1024;
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List<byte[]> memoryHolder = new ArrayList<>();
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while (Runtime.getRuntime().totalMemory() - Runtime.getRuntime().freeMemory() < targetMemory) {
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memoryHolder.add(new byte[80 * 1024 * 1024]); // 每次分配 80MB
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}
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System.out.println("内存占用已达目标");
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// CPU 占用（20%）
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int numCores = Runtime.getRuntime().availableProcessors();
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for (int i = 0; i < numCores; i++) {
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new Thread(() -> {
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while (true) {
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long startTime = System.currentTimeMillis();
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while (System.currentTimeMillis() - startTime < 200) { // 计算 200ms
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Math.pow(Math.random(), Math.random()); // 模拟计算
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}
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try {
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Thread.sleep(800); // 休眠 800ms
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} catch (InterruptedException e) {
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e.printStackTrace();
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}
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}
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}).start();
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}
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}
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}
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