{"id":56765,"date":"2025-02-24T21:47:10","date_gmt":"2025-02-24T13:47:10","guid":{"rendered":"https:\/\/fwq.ai\/blog\/?p=56765"},"modified":"2025-02-24T21:48:18","modified_gmt":"2025-02-24T13:48:18","slug":"%e7%be%8e%e5%9b%bd%e6%9c%8d%e5%8a%a1%e5%99%a8%e9%80%89%e5%9e%8b%e6%8c%87%e5%8d%97%ef%bc%9acpu%e5%af%86%e9%9b%86%e5%9e%8b%e4%b8%8ei-o%e5%af%86%e9%9b%86%e5%9e%8b%e4%bb%bb%e5%8a%a1%e7%9a%84%e6%a0%b8","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/56765\/","title":{"rendered":"\u7f8e\u56fd\u670d\u52a1\u5668\u9009\u578b\u6307\u5357\uff1aCPU\u5bc6\u96c6\u578b\u4e0eI\/O\u5bc6\u96c6\u578b\u4efb\u52a1\u7684\u6838\u5fc3\u5dee\u5f02\u4e0e\u4f18\u5316\u7b56\u7565"},"content":{"rendered":"<h2>\u4e00\u3001\u4ec0\u4e48\u662f CPU \u5bc6\u96c6\u578b\u4efb\u52a1\uff1f<\/h2>\n<p><strong>CPU \u5bc6\u96c6\u578b\u4efb\u52a1<\/strong>\uff08CPU-bound Task\uff09\u662f\u6307\u5728\u6267\u884c\u8fc7\u7a0b\u4e2d\u4e3b\u8981\u6d88\u8017 <strong>CPU \u8d44\u6e90<\/strong>\uff0c\u9700\u8981\u8fdb\u884c\u5927\u91cf\u7684\u8ba1\u7b97\u548c\u5904\u7406\u3002\u901a\u5e38\uff0c\u8fd9\u7c7b\u4efb\u52a1\u9700\u8981\u8f83\u9ad8\u7684\u8ba1\u7b97\u80fd\u529b\uff0c\u5e76\u6d89\u53ca\u590d\u6742\u7684\u6570\u5b66\u8ba1\u7b97\u3001\u5927\u6570\u636e\u5904\u7406\u3001\u56fe\u50cf\u6e32\u67d3\u7b49\u64cd\u4f5c\u3002<\/p>\n<h3>CPU \u5bc6\u96c6\u578b\u4efb\u52a1\u7684\u7279\u70b9\uff1a<\/h3>\n<ul>\n<li><strong>\u9ad8\u8ba1\u7b97\u91cf<\/strong>\uff1a\u9700\u8981\u6267\u884c\u5927\u91cf\u590d\u6742\u7684\u8ba1\u7b97\u3002<\/li>\n<li><strong>\u4f4e I\/O \u64cd\u4f5c<\/strong>\uff1a\u51e0\u4e4e\u4e0d\u6d89\u53ca\u8f93\u5165\u8f93\u51fa\u64cd\u4f5c\uff08\u5982\u6587\u4ef6\u8bfb\u5199\u3001\u7f51\u7edc\u901a\u4fe1\uff09\u3002<\/li>\n<li><strong>\u957f\u65f6\u95f4\u5360\u7528 CPU<\/strong>\uff1a\u4efb\u52a1\u6267\u884c\u65f6\uff0cCPU \u7684\u4f7f\u7528\u7387\u8f83\u9ad8\u3002<\/li>\n<\/ul>\n<h3>\u793a\u4f8b\uff1a<\/h3>\n<ul>\n<li><strong>\u590d\u6742\u7b97\u6cd5<\/strong>\uff1a\u5982\u52a0\u5bc6\u89e3\u5bc6\u3001\u5927\u6570\u636e\u5206\u6790\u3001\u673a\u5668\u5b66\u4e60\u8bad\u7ec3\u3002<\/li>\n<li><strong>\u56fe\u50cf\u548c\u89c6\u9891\u5904\u7406<\/strong>\uff1a\u5982\u56fe\u50cf\u6ee4\u6ce2\u3001\u89c6\u9891\u7f16\u7801\/\u89e3\u7801\u3002<\/li>\n<li><strong>\u79d1\u5b66\u8ba1\u7b97<\/strong>\uff1a\u5982\u7269\u7406\u6a21\u62df\u3001\u6570\u503c\u8ba1\u7b97\u3002<\/li>\n<\/ul>\n<h4>\u4ee3\u7801\u793a\u4f8b\uff1a<\/h4>\n<pre><code class=\"language-java\">public class CPUBoundTask implements Runnable {\r\n    @Override\r\n    public void run() {\r\n        \/\/ \u8fdb\u884c\u590d\u6742\u7684\u6570\u5b66\u8ba1\u7b97\r\n        double result = 0;\r\n        for (int i = 0; i &lt; 1_000_000; i++) {\r\n            result += Math.sqrt(i);\r\n        }\r\n        System.out.println(\"\u8ba1\u7b97\u7ed3\u679c: \" + result);\r\n    }\r\n}\r\n<\/code><\/pre>\n<hr \/>\n<h2>\u4e8c\u3001\u4ec0\u4e48\u662f I\/O \u5bc6\u96c6\u578b\u4efb\u52a1\uff1f<\/h2>\n<p><strong>I\/O \u5bc6\u96c6\u578b\u4efb\u52a1<\/strong>\uff08I\/O-bound Task\uff09\u662f\u6307\u6267\u884c\u8fc7\u7a0b\u4e2d\u4e3b\u8981\u6d88\u8017 <strong>\u8f93\u5165\/\u8f93\u51fa\uff08I\/O\uff09\u8d44\u6e90<\/strong>\uff0c\u5982\u6587\u4ef6\u8bfb\u5199\u3001\u6570\u636e\u5e93\u64cd\u4f5c\u3001\u7f51\u7edc\u901a\u4fe1\u7b49\u3002\u8fd9\u7c7b\u4efb\u52a1\u5f80\u5f80\u5728\u7b49\u5f85 I\/O \u64cd\u4f5c\u5b8c\u6210\u65f6\uff0cCPU \u5904\u4e8e\u7a7a\u95f2\u72b6\u6001\u3002<\/p>\n<h3>I\/O \u5bc6\u96c6\u578b\u4efb\u52a1\u7684\u7279\u70b9\uff1a<\/h3>\n<ul>\n<li><strong>\u9ad8 I\/O \u64cd\u4f5c<\/strong>\uff1a\u6d89\u53ca\u9891\u7e41\u7684\u6587\u4ef6\u3001\u6570\u636e\u5e93\u3001\u7f51\u7edc\u64cd\u4f5c\u7b49\u3002<\/li>\n<li><strong>\u4f4e\u8ba1\u7b97\u91cf<\/strong>\uff1a\u8ba1\u7b97\u9700\u6c42\u8f83\u4f4e\uff0c\u4e3b\u8981\u662f\u7b49\u5f85 I\/O \u5b8c\u6210\u3002<\/li>\n<li><strong>\u957f\u65f6\u95f4\u7b49\u5f85 I\/O<\/strong>\uff1a\u4efb\u52a1\u6267\u884c\u65f6\u9700\u8981\u957f\u65f6\u95f4\u7b49\u5f85\u5916\u90e8\u64cd\u4f5c\u3002<\/li>\n<\/ul>\n<h3>\u793a\u4f8b\uff1a<\/h3>\n<ul>\n<li><strong>\u6587\u4ef6\u4e0a\u4f20\/\u4e0b\u8f7d<\/strong>\uff1a\u5927\u91cf\u7684\u6587\u4ef6\u8bfb\u5199\u64cd\u4f5c\u3002<\/li>\n<li><strong>\u7f51\u7edc\u8bf7\u6c42\u5904\u7406<\/strong>\uff1a\u4f8b\u5982 HTTP \u8bf7\u6c42\u3001\u4e0e\u8fdc\u7a0b\u670d\u52a1\u5668\u901a\u4fe1\u3002<\/li>\n<li><strong>\u6570\u636e\u5e93\u64cd\u4f5c<\/strong>\uff1a\u6267\u884c\u6570\u636e\u5e93\u67e5\u8be2\u3001\u66f4\u65b0\u7b49\u3002<\/li>\n<\/ul>\n<h4>\u4ee3\u7801\u793a\u4f8b\uff1a<\/h4>\n<pre><code class=\"language-java\">public class IOBoundTask implements Runnable {\r\n    @Override\r\n    public void run() {\r\n        try {\r\n            \/\/ \u6a21\u62df\u6587\u4ef6\u8bfb\u53d6\u64cd\u4f5c\r\n            Thread.sleep(2000); \/\/ \u6a21\u62df I\/O \u7b49\u5f85\r\n            System.out.println(\"\u6587\u4ef6\u8bfb\u53d6\u5b8c\u6210\");\r\n        } catch (InterruptedException e) {\r\n            Thread.currentThread().interrupt();\r\n        }\r\n    }\r\n}\r\n<\/code><\/pre>\n<hr \/>\n<h2>\u4e09\u3001CPU \u5bc6\u96c6\u578b\u4efb\u52a1\u4e0e I\/O \u5bc6\u96c6\u578b\u4efb\u52a1\u7684\u5bf9\u6bd4<\/h2>\n<table>\n<thead>\n<tr>\n<th>\u7279\u5f81<\/th>\n<th><strong>CPU \u5bc6\u96c6\u578b\u4efb\u52a1<\/strong><\/th>\n<th><strong>I\/O \u5bc6\u96c6\u578b\u4efb\u52a1<\/strong><\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><strong>\u4e3b\u8981\u6d88\u8017\u8d44\u6e90<\/strong><\/td>\n<td>CPU<\/td>\n<td>\u8f93\u5165\/\u8f93\u51fa\u8d44\u6e90\uff08\u78c1\u76d8\u3001\u7f51\u7edc\u7b49\uff09<\/td>\n<\/tr>\n<tr>\n<td><strong>CPU \u4f7f\u7528\u7387<\/strong><\/td>\n<td>\u9ad8<\/td>\n<td>\u4f4e\uff08\u5b58\u5728\u7b49\u5f85\u65f6\u95f4\uff09<\/td>\n<\/tr>\n<tr>\n<td><strong>\u9002\u5408\u7684\u7ebf\u7a0b\u6c60\u914d\u7f6e<\/strong><\/td>\n<td>\u6838\u5fc3\u7ebf\u7a0b\u6570 \u2248 CPU \u6838\u5fc3\u6570<\/td>\n<td>\u6838\u5fc3\u7ebf\u7a0b\u6570 \u2248 CPU \u6838\u5fc3\u6570 \u00d7 2<\/td>\n<\/tr>\n<tr>\n<td><strong>\u5178\u578b\u5e94\u7528\u573a\u666f<\/strong><\/td>\n<td>\u56fe\u50cf\u5904\u7406\u3001\u79d1\u5b66\u8ba1\u7b97\u3001\u6570\u636e\u5206\u6790<\/td>\n<td>\u6587\u4ef6\u4f20\u8f93\u3001\u7f51\u7edc\u901a\u4fe1\u3001\u6570\u636e\u5e93\u64cd\u4f5c<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<hr \/>\n<h2>\u56db\u3001\u5982\u4f55\u6839\u636e\u4efb\u52a1\u7c7b\u578b\u914d\u7f6e\u7ebf\u7a0b\u6c60<\/h2>\n<p>\u5408\u7406\u914d\u7f6e\u7ebf\u7a0b\u6c60\u53c2\u6570\uff0c\u80fd\u6709\u6548\u63d0\u5347 <strong>\u7f8e\u56fd\u670d\u52a1\u5668<\/strong> \u7684\u6027\u80fd\u548c\u8d44\u6e90\u5229\u7528\u7387\u3002\u4e0b\u9762\u5206\u522b\u4ecb\u7ecd <strong>CPU \u5bc6\u96c6\u578b\u4efb\u52a1<\/strong> \u548c <strong>I\/O \u5bc6\u96c6\u578b\u4efb\u52a1<\/strong> \u7684\u7ebf\u7a0b\u6c60\u914d\u7f6e\u65b9\u6cd5\u3002<\/p>\n<h3>1. CPU \u5bc6\u96c6\u578b\u4efb\u52a1\u7684\u7ebf\u7a0b\u6c60\u914d\u7f6e<\/h3>\n<p>\u5bf9\u4e8e <strong>CPU \u5bc6\u96c6\u578b\u4efb\u52a1<\/strong>\uff0c\u7ebf\u7a0b\u6c60\u7684 <strong>\u6838\u5fc3\u7ebf\u7a0b\u6570<\/strong> \u5e94\u8bbe\u7f6e\u4e3a CPU \u6838\u5fc3\u6570\uff0c\u8fd9\u6837\u53ef\u4ee5\u907f\u514d\u7ebf\u7a0b\u8fc7\u591a\u5bfc\u81f4\u7684\u4e0a\u4e0b\u6587\u5207\u6362\u5f00\u9500\u3002\u7279\u522b\u662f\u5728\u90e8\u7f72\u5230 <strong>\u7f8e\u56fd\u670d\u52a1\u5668<\/strong> \u7b49\u9ad8\u6027\u80fd\u670d\u52a1\u5668\u65f6\uff0c\u5408\u7406\u914d\u7f6e\u80fd\u6700\u5927\u5316 CPU \u7684\u5229\u7528\u7387\u3002<\/p>\n<h4>\u793a\u4f8b\u914d\u7f6e\uff1a<\/h4>\n<pre><code class=\"language-java\">int cpuCores = Runtime.getRuntime().availableProcessors();\r\nExecutorService cpuBoundExecutor = new ThreadPoolExecutor(\r\n    cpuCores,\r\n    cpuCores,\r\n    0L,\r\n    TimeUnit.MILLISECONDS,\r\n    new LinkedBlockingQueue&lt;Runnable&gt;(),\r\n    new ThreadPoolExecutor.AbortPolicy()\r\n);\r\n<\/code><\/pre>\n<h3>2. I\/O \u5bc6\u96c6\u578b\u4efb\u52a1\u7684\u7ebf\u7a0b\u6c60\u914d\u7f6e<\/h3>\n<p>\u5bf9\u4e8e <strong>I\/O \u5bc6\u96c6\u578b\u4efb\u52a1<\/strong>\uff0c\u7ebf\u7a0b\u6c60\u7684 <strong>\u6838\u5fc3\u7ebf\u7a0b\u6570<\/strong> \u8bbe\u7f6e\u4e3a CPU \u6838\u5fc3\u6570\uff0c<strong>\u6700\u5927\u7ebf\u7a0b\u6570<\/strong> \u8bbe\u7f6e\u4e3a CPU \u6838\u5fc3\u6570\u7684\u4e24\u500d\u6216\u66f4\u591a\uff0c\u4ee5\u8865\u507f I\/O \u64cd\u4f5c\u7684\u7b49\u5f85\u65f6\u95f4\u3002\u8fd9\u6837\u914d\u7f6e\u80fd\u591f\u8ba9 <strong>\u7f8e\u56fd\u670d\u52a1\u5668<\/strong> \u5728\u8fdb\u884c\u5927\u91cf\u6587\u4ef6\u4e0a\u4f20\u3001\u4e0b\u8f7d\u6216\u6570\u636e\u5e93\u8bbf\u95ee\u65f6\u66f4\u9ad8\u6548\u3002<\/p>\n<h4>\u793a\u4f8b\u914d\u7f6e\uff1a<\/h4>\n<pre><code class=\"language-java\">int cpuCores = Runtime.getRuntime().availableProcessors();\r\nint maxThreads = cpuCores * 2;\r\nExecutorService ioBoundExecutor = new ThreadPoolExecutor(\r\n    cpuCores,\r\n    maxThreads,\r\n    60L,\r\n    TimeUnit.SECONDS,\r\n    new SynchronousQueue&lt;Runnable&gt;(),\r\n    new ThreadPoolExecutor.CallerRunsPolicy()\r\n);\r\n<\/code><\/pre>\n<hr \/>\n<h2>\u4e94\u3001\u5982\u4f55\u5904\u7406\u6df7\u5408\u578b\u4efb\u52a1\uff1f<\/h2>\n<p>\u5728\u8bb8\u591a\u5b9e\u9645\u5e94\u7528\u4e2d\uff0c\u4efb\u52a1\u65e2\u5305\u542b <strong>CPU \u5bc6\u96c6\u578b<\/strong> \u90e8\u5206\uff0c\u4e5f\u5305\u542b <strong>I\/O \u5bc6\u96c6\u578b<\/strong> \u90e8\u5206\uff0c\u8fd9\u79cd\u4efb\u52a1\u88ab\u79f0\u4e3a <strong>\u6df7\u5408\u578b\u4efb\u52a1<\/strong>\u3002\u8fd9\u7c7b\u4efb\u52a1\u9700\u8981\u7efc\u5408\u8003\u8651\u8ba1\u7b97\u548c I\/O \u7b49\u56e0\u7d20\u6765\u4f18\u5316\u6027\u80fd\u3002<\/p>\n<h3>\u8ba1\u7b97\u7ebf\u7a0b\u6c60\u5927\u5c0f\uff1a<\/h3>\n<p>\u6df7\u5408\u578b\u4efb\u52a1\u7684\u7ebf\u7a0b\u6c60\u5927\u5c0f\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u516c\u5f0f\u8fdb\u884c\u8ba1\u7b97\uff1a<\/p>\n<pre><code>poolSize = CPU \u6838\u5fc3\u6570 * (1 + (\u7b49\u5f85\u65f6\u95f4 \/ \u8ba1\u7b97\u65f6\u95f4))\r\n<\/code><\/pre>\n<ul>\n<li><strong>CPU \u6838\u5fc3\u6570<\/strong>\uff1a\u901a\u8fc7 <code>Runtime.getRuntime().availableProcessors()<\/code> \u83b7\u53d6\u3002<\/li>\n<li><strong>\u7b49\u5f85\u65f6\u95f4<\/strong>\uff1a\u4efb\u52a1\u5728\u7b49\u5f85 I\/O \u64cd\u4f5c\u65f6\u7684\u65f6\u95f4\u3002<\/li>\n<li><strong>\u8ba1\u7b97\u65f6\u95f4<\/strong>\uff1a\u4efb\u52a1\u8fdb\u884c\u8ba1\u7b97\u7684\u65f6\u95f4\u3002<\/li>\n<\/ul>\n<p>\u901a\u8fc7\u76d1\u63a7\u548c\u6d4b\u91cf\u4efb\u52a1\u7684\u5b9e\u9645\u6267\u884c\u65f6\u95f4\uff0c\u53ef\u4ee5\u52a8\u6001\u8c03\u6574\u7ebf\u7a0b\u6c60\u5927\u5c0f\uff0c\u4ee5\u8fbe\u5230\u6700\u4f73\u6027\u80fd\uff0c\u5c24\u5176\u662f\u5728 <strong>\u7f8e\u56fd\u670d\u52a1\u5668<\/strong> \u4e0a\u8fd0\u884c\u65f6\uff0c\u786e\u4fdd\u7cfb\u7edf\u9ad8\u6548\u8fd0\u8f6c\u3002<\/p>\n<hr \/>\n<h2>\u516d\u3001\u603b\u7ed3<\/h2>\n<p>\u672c\u6587\u5206\u6790\u4e86 <strong>CPU \u5bc6\u96c6\u578b\u4efb\u52a1<\/strong> \u548c <strong>I\/O \u5bc6\u96c6\u578b\u4efb\u52a1<\/strong> \u7684\u533a\u522b\uff0c\u5e76\u63d0\u4f9b\u4e86\u5408\u7406\u914d\u7f6e\u7ebf\u7a0b\u6c60\u7684\u5efa\u8bae\u3002\u7406\u89e3\u4efb\u52a1\u7c7b\u578b\u540e\uff0c\u80fd\u591f\u5e2e\u52a9\u6211\u4eec\u4f18\u5316 <strong>\u7f8e\u56fd\u670d\u52a1\u5668<\/strong> \u7684\u6027\u80fd\u548c\u8d44\u6e90\u5229\u7528\u7387\u3002\u5408\u7406\u7684\u7ebf\u7a0b\u6c60\u914d\u7f6e\u4e0d\u4ec5\u80fd\u6709\u6548\u5229\u7528\u670d\u52a1\u5668\u7684\u591a\u6838\u8d44\u6e90\uff0c\u8fd8\u80fd\u907f\u514d\u8d44\u6e90\u6d6a\u8d39\u548c\u6027\u80fd\u74f6\u9888\u3002\u5efa\u8bae\u6839\u636e\u4efb\u52a1\u7279\u70b9\u548c\u7cfb\u7edf\u9700\u6c42\uff0c\u8fdb\u884c\u6027\u80fd\u6d4b\u8bd5\u5e76\u52a8\u6001\u4f18\u5316\u7ebf\u7a0b\u6c60\u914d\u7f6e\u3002<\/p>\n<hr \/>\n<p>\u901a\u8fc7\u8fd9\u6837\u7684\u4f18\u5316\uff0c\u60a8\u53ef\u4ee5\u5728 <a href=\"https:\/\/fwq.ai\/\"><strong>\u7f8e\u56fd\u670d\u52a1\u5668<\/strong><\/a> \u4e0a\u66f4\u9ad8\u6548\u5730\u5904\u7406\u4efb\u52a1\uff0c\u63d0\u5347\u6574\u4f53\u6027\u80fd\u3002\u5982\u679c\u6709\u4efb\u4f55\u95ee\u9898\u6216\u9700\u8981\u8fdb\u4e00\u6b65\u4e86\u89e3\u5982\u4f55\u4f18\u5316\u670d\u52a1\u5668\u914d\u7f6e\uff0c\u968f\u65f6\u53ef\u4ee5\u63d0\u95ee\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e00\u3001\u4ec0\u4e48\u662f CPU \u5bc6\u96c6\u578b\u4efb\u52a1\uff1f CPU \u5bc6\u96c6\u578b\u4efb\u52a1\uff08CPU-bound Task\uff09\u662f\u6307\u5728\u6267\u884c\u8fc7\u7a0b\u4e2d\u4e3b\u8981\u6d88\u8017 CPU \u8d44\u6e90\uff0c\u9700\u8981\u8fdb\u884c\u5927\u91cf\u7684\u8ba1\u7b97\u548c\u5904\u7406\u3002\u901a\u5e38\uff0c\u8fd9\u7c7b\u4efb\u52a1\u9700\u8981\u8f83\u9ad8\u7684\u8ba1\u7b97\u80fd\u529b\uff0c\u5e76\u6d89\u53ca\u590d\u6742\u7684\u6570\u5b66\u8ba1\u7b97\u3001\u5927\u6570\u636e\u5904\u7406\u3001\u56fe\u50cf\u6e32\u67d3\u7b49\u64cd\u4f5c\u3002 CPU \u5bc6\u96c6\u578b\u4efb\u52a1\u7684\u7279\u70b9\uff1a \u9ad8\u8ba1\u7b97\u91cf\uff1a\u9700\u8981\u6267\u884c\u5927\u91cf\u590d\u6742\u7684\u8ba1\u7b97\u3002 \u4f4e I\/O \u64cd\u4f5c\uff1a\u51e0\u4e4e\u4e0d\u6d89\u53ca\u8f93\u5165\u8f93\u51fa\u64cd\u4f5c\uff08\u5982\u6587\u4ef6\u8bfb\u5199\u3001\u7f51\u7edc\u901a\u4fe1\uff09\u3002 \u957f\u65f6\u95f4\u5360\u7528 CPU\uff1a\u4efb\u52a1\u6267\u884c\u65f6\uff0cCPU \u7684\u4f7f\u7528\u7387\u8f83\u9ad8\u3002 \u793a\u4f8b\uff1a \u590d\u6742\u7b97\u6cd5\uff1a\u5982\u52a0\u5bc6\u89e3\u5bc6\u3001\u5927\u6570\u636e\u5206\u6790\u3001\u673a\u5668\u5b66\u4e60\u8bad\u7ec3\u3002 \u56fe\u50cf\u548c\u89c6\u9891\u5904\u7406\uff1a\u5982\u56fe\u50cf\u6ee4\u6ce2\u3001\u89c6\u9891\u7f16\u7801\/\u89e3\u7801\u3002 \u79d1\u5b66\u8ba1\u7b97\uff1a\u5982\u7269\u7406\u6a21\u62df\u3001\u6570\u503c\u8ba1\u7b97\u3002 \u4ee3\u7801\u793a\u4f8b\uff1a public class CPUBoundTask implements Runnable { @Override public void run() { \/\/ \u8fdb\u884c\u590d\u6742\u7684\u6570\u5b66\u8ba1\u7b97 double result = 0; for (int i = 0; i &lt; 1_000_000; i++) { result += Math.sqrt(i); } System.out.println(&#8220;\u8ba1\u7b97\u7ed3\u679c: &#8221; [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8],"tags":[],"class_list":["post-56765","post","type-post","status-publish","format-standard","hentry","category-os"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/56765","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/comments?post=56765"}],"version-history":[{"count":1,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/56765\/revisions"}],"predecessor-version":[{"id":56767,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/56765\/revisions\/56767"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=56765"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=56765"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=56765"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}