{"id":3985,"date":"2025-07-28T21:10:48","date_gmt":"2025-07-28T13:10:48","guid":{"rendered":"https:\/\/www.laixuexila.com\/?p=3985"},"modified":"2025-07-28T21:10:48","modified_gmt":"2025-07-28T13:10:48","slug":"%e7%ba%bf%e7%a8%8b%e6%b1%a0%e5%8f%82%e6%95%b0%e5%a6%82%e4%bd%95%e8%b0%83%e4%bc%98","status":"publish","type":"post","link":"https:\/\/www.laixuexila.com\/index.php\/2025\/07\/28\/%e7%ba%bf%e7%a8%8b%e6%b1%a0%e5%8f%82%e6%95%b0%e5%a6%82%e4%bd%95%e8%b0%83%e4%bc%98\/","title":{"rendered":"\u7ebf\u7a0b\u6c60\u53c2\u6570\u5982\u4f55\u8c03\u4f18"},"content":{"rendered":"\n<p>\u7ebf\u7a0b\u6c60\u53c2\u6570\u8c03\u4f18\u662f\u63d0\u5347\u591a\u7ebf\u7a0b\u5e94\u7528\u6027\u80fd\u7684\u5173\u952e\u73af\u8282\uff0c\u5408\u7406\u914d\u7f6e\u7ebf\u7a0b\u6c60\u80fd\u6709\u6548\u907f\u514d\u8d44\u6e90\u6d6a\u8d39\u548c\u7ebf\u7a0b\u8fc7\u5ea6\u7ade\u4e89\u3002\u4e0b\u9762\u6211\u4ece\u6838\u5fc3\u53c2\u6570\u5165\u624b\uff0c\u7ed3\u5408\u5b9e\u9645\u573a\u666f\u548c\u8c03\u4f18\u601d\u8def\uff0c\u7ed9\u4f60\u5168\u9762\u8be6\u7ec6\u7684\u6307\u5bfc\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e00\u3001\u7ebf\u7a0b\u6c60\u5173\u952e\u53c2\u6570\u53ca\u542b\u4e49<\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u53c2\u6570\u540d<\/th><th>\u542b\u4e49<\/th><th>\u5178\u578b\u9ed8\u8ba4\u503c\/\u8bf4\u660e<\/th><\/tr><\/thead><tbody><tr><td><code>corePoolSize<\/code><\/td><td>\u6838\u5fc3\u7ebf\u7a0b\u6570\uff0c\u7ebf\u7a0b\u6c60\u7ef4\u62a4\u7684\u6700\u5c0f\u7ebf\u7a0b\u6570<\/td><td>\u53d6\u51b3\u4e8eCPU\u6838\u6570\u548c\u4efb\u52a1\u7c7b\u578b<\/td><\/tr><tr><td><code>maximumPoolSize<\/code><\/td><td>\u6700\u5927\u7ebf\u7a0b\u6570\uff0c\u7ebf\u7a0b\u6c60\u5141\u8bb8\u521b\u5efa\u7684\u6700\u5927\u7ebf\u7a0b\u6570\u91cf<\/td><td>\u2265 <code>corePoolSize<\/code><\/td><\/tr><tr><td><code>keepAliveTime<\/code><\/td><td>\u975e\u6838\u5fc3\u7ebf\u7a0b\u95f2\u7f6e\u591a\u4e45\u540e\u88ab\u56de\u6536<\/td><td>\u9ed8\u8ba4\u4e3a60\u79d2<\/td><\/tr><tr><td><code>TimeUnit<\/code><\/td><td><code>keepAliveTime<\/code> \u7684\u65f6\u95f4\u5355\u4f4d<\/td><td>\u79d2\u3001\u6beb\u79d2\u7b49<\/td><\/tr><tr><td><code>workQueue<\/code><\/td><td>\u4efb\u52a1\u961f\u5217\uff0c\u5b58\u653e\u7b49\u5f85\u6267\u884c\u7684\u4efb\u52a1<\/td><td>\u963b\u585e\u961f\u5217\uff0c\u5982 <code>LinkedBlockingQueue<\/code><\/td><\/tr><tr><td><code>threadFactory<\/code><\/td><td>\u7ebf\u7a0b\u5de5\u5382\uff0c\u8d1f\u8d23\u521b\u5efa\u7ebf\u7a0b<\/td><td>\u9ed8\u8ba4\u5de5\u5382<\/td><\/tr><tr><td><code>RejectedExecutionHandler<\/code><\/td><td>\u62d2\u7edd\u7b56\u7565\uff0c\u4efb\u52a1\u65e0\u6cd5\u5904\u7406\u65f6\u7684\u5904\u7406\u7b56\u7565<\/td><td>AbortPolicy\u3001CallerRunsPolicy\u7b49<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e8c\u3001\u8c03\u4f18\u6b65\u9aa4\u53ca\u601d\u8def<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">1. \u8bc4\u4f30\u4efb\u52a1\u7c7b\u578b<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u8ba1\u7b97\u5bc6\u96c6\u578b\u4efb\u52a1<\/strong>\uff1aCPU \u6d88\u8017\u8f83\u9ad8\uff0c\u901a\u5e38\u5efa\u8bae\u7ebf\u7a0b\u6570 \u2248 CPU \u6838\u6570\uff08<code>Runtime.getRuntime().availableProcessors()<\/code>\uff09\u3002<\/li>\n\n\n\n<li><strong>IO\u5bc6\u96c6\u578b\u4efb\u52a1<\/strong>\uff1a\u7ebf\u7a0b\u5927\u90e8\u5206\u65f6\u95f4\u5728\u7b49\u5f85IO\uff0c\u7ebf\u7a0b\u6570\u53ef\u4ee5\u5927\u4e8eCPU\u6838\u6570\uff0c\u4e00\u822c <code>corePoolSize \u2248 CPU\u6838\u6570 * (1 + \u963b\u585e\u65f6\u95f4\/\u8ba1\u7b97\u65f6\u95f4)<\/code>\u3002<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">2. \u8bbe\u5b9a\u6838\u5fc3\u7ebf\u7a0b\u6570 <code>corePoolSize<\/code><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u8ba1\u7b97\u5bc6\u96c6\u578b<\/strong>\uff1a<code>corePoolSize = CPU\u6838\u6570<\/code> \u662f\u5408\u7406\u8d77\u70b9\u3002<\/li>\n\n\n\n<li><strong>IO\u5bc6\u96c6\u578b<\/strong>\uff1a\u53ef\u9002\u5f53\u589e\u5927\uff0c\u59822-3\u500d CPU\u6838\u6570\u3002<\/li>\n\n\n\n<li>\u4fdd\u6301\u6838\u5fc3\u7ebf\u7a0b\u6570\u80fd\u591f\u6ee1\u8db3\u5e73\u5747\u8d1f\u8f7d\u3002<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">3. \u8bbe\u5b9a\u6700\u5927\u7ebf\u7a0b\u6570 <code>maximumPoolSize<\/code><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u6700\u5927\u7ebf\u7a0b\u6570 > \u6838\u5fc3\u7ebf\u7a0b\u6570\uff0c\u907f\u514d\u77ed\u65f6\u9ad8\u5cf0\u4efb\u52a1\u5835\u585e\u3002<\/li>\n\n\n\n<li>\u907f\u514d\u8bbe\u7f6e\u8fc7\u5927\uff0c\u5bfc\u81f4\u9891\u7e41\u7ebf\u7a0b\u5207\u6362\u548c\u4e0a\u4e0b\u6587\u5f00\u9500\u3002<\/li>\n\n\n\n<li>\u4e00\u822c\u63a8\u8350\u6700\u5927\u7ebf\u7a0b\u6570 \u2264 2~3\u500d\u6838\u5fc3\u7ebf\u7a0b\u6570\u3002<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">4. \u914d\u7f6e\u4efb\u52a1\u961f\u5217 <code>workQueue<\/code><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u65e0\u754c\u961f\u5217\uff08LinkedBlockingQueue\uff09<\/strong>\uff1a\u5bb9\u6613\u9020\u6210\u4efb\u52a1\u5806\u79ef\uff0c\u7ebf\u7a0b\u6570\u4fdd\u6301\u5728\u6838\u5fc3\u7ebf\u7a0b\u6570\uff0c\u9002\u5408\u4efb\u52a1\u91cf\u7a33\u5b9a\u3001\u5904\u7406\u901f\u5ea6\u5feb\u573a\u666f\u3002<\/li>\n\n\n\n<li><strong>\u6709\u754c\u961f\u5217\uff08ArrayBlockingQueue\uff09<\/strong>\uff1a\u9632\u6b62\u4efb\u52a1\u65e0\u9650\u5806\u79ef\uff0c\u89e6\u53d1\u62d2\u7edd\u7b56\u7565\uff0c\u9002\u5408\u9ad8\u8d1f\u8f7d\u7cfb\u7edf\u3002<\/li>\n\n\n\n<li><strong>SynchronousQueue<\/strong>\uff1a\u4e0d\u5b58\u50a8\u4efb\u52a1\uff0c\u9002\u5408\u7f13\u5b58\u7ebf\u7a0b\u6c60\uff0c\u7ebf\u7a0b\u6570\u52a8\u6001\u53d8\u5316\u3002<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">5. \u8bbe\u7f6e\u7ebf\u7a0b\u5b58\u6d3b\u65f6\u95f4 <code>keepAliveTime<\/code><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u63a7\u5236\u975e\u6838\u5fc3\u7ebf\u7a0b\u7a7a\u95f2\u591a\u4e45\u540e\u9500\u6bc1\uff0c\u51cf\u5c11\u8d44\u6e90\u5360\u7528\u3002<\/li>\n\n\n\n<li>\u5bf9\u4e8e\u77ed\u4efb\u52a1\uff0c\u7f29\u77ed\u65f6\u95f4\uff0c\u5feb\u901f\u56de\u6536\u7ebf\u7a0b\u3002<\/li>\n\n\n\n<li>\u957f\u4efb\u52a1\u6216\u9ad8\u5cf0\u65f6\u6bb5\uff0c\u53ef\u9002\u5f53\u5ef6\u957f\u3002<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">6. \u9009\u62e9\u62d2\u7edd\u7b56\u7565 <code>RejectedExecutionHandler<\/code><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>AbortPolicy<\/code>\uff08\u9ed8\u8ba4\uff09\uff1a\u629b\u5f02\u5e38\uff0c\u5feb\u901f\u66b4\u9732\u95ee\u9898\u3002<\/li>\n\n\n\n<li><code>CallerRunsPolicy<\/code>\uff1a\u7531\u8c03\u7528\u8005\u7ebf\u7a0b\u6267\u884c\uff0c\u51cf\u7f13\u65b0\u4efb\u52a1\u63d0\u4ea4\u901f\u5ea6\u3002<\/li>\n\n\n\n<li>\u5176\u4ed6\u7b56\u7565\uff1a\u4e22\u5f03\u4efb\u52a1\u6216\u4e22\u5f03\u6700\u65e7\u4efb\u52a1\uff0c\u89c6\u4e1a\u52a1\u9700\u6c42\u9009\u7528\u3002<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e09\u3001\u5b9e\u6218\u8c03\u4f18\u5efa\u8bae<\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u573a\u666f<\/th><th>\u5efa\u8bae\u914d\u7f6e<\/th><th>\u5907\u6ce8<\/th><\/tr><\/thead><tbody><tr><td>CPU\u5bc6\u96c6\u578b\u8ba1\u7b97\u4efb\u52a1<\/td><td><code>corePoolSize = CPU\u6838\u6570<\/code><br><code>maxPoolSize = corePoolSize<\/code><br>\u65e0\u754c\u961f\u5217<\/td><td>\u7ebf\u7a0b\u6570\u4e0d\u8981\u8d85\u8fc7\u6838\u6570\uff0c\u907f\u514d\u4e0a\u4e0b\u6587\u5207\u6362<\/td><\/tr><tr><td>IO\u5bc6\u96c6\u578b\u4efb\u52a1<\/td><td><code>corePoolSize = CPU\u6838\u6570 * 2<\/code><br><code>maxPoolSize = CPU\u6838\u6570 * 4<\/code><br>\u6709\u754c\u961f\u5217<\/td><td>\u63d0\u9ad8\u5e76\u53d1\uff0c\u9632\u6b62\u961f\u5217\u65e0\u9650\u589e\u957f<\/td><\/tr><tr><td>\u77ed\u4efb\u52a1\u9ad8\u9891\u6267\u884c<\/td><td>\u5c0f\u961f\u5217\uff0c\u77ed <code>keepAliveTime<\/code><\/td><td>\u53ca\u65f6\u56de\u6536\u7ebf\u7a0b\uff0c\u964d\u4f4e\u8d44\u6e90\u5360\u7528<\/td><\/tr><tr><td>\u9ad8\u8d1f\u8f7d\u7cfb\u7edf<\/td><td>\u6709\u754c\u961f\u5217+\u5408\u7406\u62d2\u7edd\u7b56\u7565<\/td><td>\u9632\u6b62OOM\uff0c\u4fdd\u8bc1\u7cfb\u7edf\u7a33\u5b9a<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u56db\u3001\u76d1\u63a7\u4e0e\u4f18\u5316\u6280\u5de7<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u76d1\u63a7\u7ebf\u7a0b\u6c60\u6307\u6807<\/strong>\uff1a\u6d3b\u8dc3\u7ebf\u7a0b\u6570\u3001\u961f\u5217\u957f\u5ea6\u3001\u4efb\u52a1\u5b8c\u6210\u6570\u3001\u62d2\u7edd\u4efb\u52a1\u6570\u3002<\/li>\n\n\n\n<li><strong>\u7ebf\u7a0b\u6c60\u9971\u548c\u544a\u8b66<\/strong>\uff1a\u62d2\u7edd\u4efb\u52a1\u9891\u7e41\u53d1\u751f\u65f6\u8c03\u6574\u7ebf\u7a0b\u6c60\u6216\u4e1a\u52a1\u903b\u8f91\u3002<\/li>\n\n\n\n<li><strong>\u65e5\u5fd7\u5206\u6790<\/strong>\uff1a\u7ebf\u7a0b\u6c60\u4efb\u52a1\u6267\u884c\u65f6\u95f4\u6ce2\u52a8\uff0c\u5b9a\u4f4d\u6027\u80fd\u74f6\u9888\u3002<\/li>\n\n\n\n<li><strong>\u7ed3\u5408 JVM \u548c\u7cfb\u7edf\u8d44\u6e90\u76d1\u63a7<\/strong>\uff1a\u907f\u514d\u7ebf\u7a0b\u6570\u8d85\u8fc7\u7cfb\u7edf\u627f\u8f7d\u80fd\u529b\u3002<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e94\u3001\u4ee3\u7801\u793a\u4f8b<\/h2>\n\n\n\n<pre class=\"wp-block-code\"><code>int cpuCount = Runtime.getRuntime().availableProcessors();\n\nThreadPoolExecutor executor = new ThreadPoolExecutor(\n    cpuCount,              \/\/ corePoolSize\n    cpuCount * 2,          \/\/ maximumPoolSize\n    60L,                   \/\/ keepAliveTime\n    TimeUnit.SECONDS,\n    new ArrayBlockingQueue&lt;&gt;(100),  \/\/ \u6709\u754c\u961f\u5217\uff0c\u9632\u6b62\u5806\u79ef\n    Executors.defaultThreadFactory(),\n    new ThreadPoolExecutor.CallerRunsPolicy() \/\/ \u4efb\u52a1\u6ee1\u4e86\u7531\u4e3b\u7ebf\u7a0b\u6267\u884c\uff0c\u51cf\u7f13\u538b\u529b\n);<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u516d\u3001\u53c2\u8003\u8d44\u6599<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/docs.oracle.com\/javase\/8\/docs\/api\/java\/util\/concurrent\/ThreadPoolExecutor.html\">Java\u5b98\u65b9\u6587\u6863 &#8211; ThreadPoolExecutor<\/a><\/li>\n\n\n\n<li>\u300aJava\u5e76\u53d1\u7f16\u7a0b\u5b9e\u6218\u300b7\u7ae0\u7ebf\u7a0b\u6c60\u8be6\u89e3<\/li>\n\n\n\n<li><a href=\"https:\/\/developer.aliyun.com\/article\/684849\">\u963f\u91cc\u5df4\u5df4Java\u5f00\u53d1\u624b\u518c-\u7ebf\u7a0b\u6c60\u914d\u7f6e<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/juejin.cn\/post\/6844904174695365646\">\u6df1\u5165\u6d45\u51faJava\u7ebf\u7a0b\u6c60\u8c03\u4f18<\/a><\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p>\u66f4\u591a\u8be6\u7ec6\u5185\u5bb9\u8bf7\u5173\u6ce8\u5176\u4ed6\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u7ebf\u7a0b\u6c60\u53c2\u6570\u8c03\u4f18\u662f\u63d0\u5347\u591a\u7ebf\u7a0b\u5e94\u7528\u6027\u80fd\u7684\u5173\u952e\u73af\u8282\uff0c\u5408\u7406\u914d\u7f6e\u7ebf\u7a0b\u6c60\u80fd\u6709\u6548\u907f\u514d\u8d44\u6e90\u6d6a\u8d39\u548c\u7ebf\u7a0b\u8fc7\u5ea6\u7ade\u4e89\u3002\u4e0b\u9762\u6211\u4ece\u6838\u5fc3\u53c2\u6570 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":3986,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[86,68],"tags":[],"class_list":["post-3985","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-java-","category-java"],"_links":{"self":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/3985","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/comments?post=3985"}],"version-history":[{"count":1,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/3985\/revisions"}],"predecessor-version":[{"id":3987,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/3985\/revisions\/3987"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/media\/3986"}],"wp:attachment":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/media?parent=3985"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/categories?post=3985"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/tags?post=3985"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}