{"id":11358,"date":"2023-11-28T22:02:06","date_gmt":"2023-11-28T14:02:06","guid":{"rendered":"https:\/\/wx.kaifamiao.info\/?p=11358"},"modified":"2023-12-09T09:58:07","modified_gmt":"2023-12-09T01:58:07","slug":"jvm-zhong-safepoint-shi-shen-me","status":"publish","type":"post","link":"http:\/\/wx.kaifamiao.info\/index.php\/2023\/11\/28\/jvm-zhong-safepoint-shi-shen-me\/","title":{"rendered":"JVM \u4e2d safepoint \u662f\u4ec0\u4e48\uff1f"},"content":{"rendered":"

Safepoint\uff08\u5b89\u5168\u70b9\uff09\u662fJava\u865a\u62df\u673a\u4e2d\u7684\u4e00\u79cd\u673a\u5236\uff0c\u7528\u4e8e\u786e\u4fdd\u7ebf\u7a0b\u5728\u7279\u5b9a\u7684\u4f4d\u7f6e\uff08\u5b89\u5168\u70b9\uff09\u505c\u987f\uff0c\u4ee5\u4fbf\u8fdb\u884c\u4e00\u4e9b\u5173\u952e\u7684\u64cd\u4f5c\uff0c\u5982\u5783\u573e\u56de\u6536\u3001\u7ebf\u7a0b\u6808\u7684\u5b89\u5168\u68c0\u67e5\u3001\u7ebf\u7a0b\u6302\u8d77\u7b49\u3002\u5728\u8fd9\u4e9b\u5b89\u5168\u70b9\u4e0a\uff0c\u865a\u62df\u673a\u53ef\u4ee5\u786e\u4fdd\u7ebf\u7a0b\u7684\u4e00\u81f4\u6027\uff0c\u5373\u7ebf\u7a0b\u7684\u72b6\u6001\u662f\u53ef\u9760\u7684\uff0c\u4e0d\u4f1a\u53d1\u751f\u4e0d\u4e00\u81f4\u7684\u60c5\u51b5\u3002<\/p>\n

\u5728JVM\u4e2d\uff0c\u5b89\u5168\u70b9\u7684\u5b9e\u73b0\u901a\u5e38\u6709\u4e24\u79cd\u65b9\u5f0f\uff1a<\/p>\n

    \n
  1. \n\u4e3b\u52a8\u5f0f\u62a2\u65ad\uff08Polling\uff09\uff1a<\/strong><\/p>\n
      \n
    • \u5728\u4e3b\u52a8\u5f0f\u62a2\u65ad\u4e2d\uff0c\u7ebf\u7a0b\u5728\u7279\u5b9a\u7684\u5730\u65b9\u4e3b\u52a8\u68c0\u67e5\u662f\u5426\u9700\u8981\u505c\u987f\u3002\u8fd9\u901a\u5e38\u901a\u8fc7\u5728\u4ee3\u7801\u4e2d\u63d2\u5165\u8f6e\u8be2\u68c0\u67e5\u70b9\u6765\u5b9e\u73b0\u3002\u5982\u679c\u68c0\u67e5\u5230\u9700\u8981\u505c\u987f\uff0c\u7ebf\u7a0b\u5c31\u4f1a\u4e3b\u52a8\u653e\u5f03CPU\uff0c\u5e76\u7b49\u5f85\u5783\u573e\u56de\u6536\u7b49\u64cd\u4f5c\u5b8c\u6210\u540e\u518d\u7ee7\u7eed\u6267\u884c\u3002<\/li>\n<\/ul>\n<\/li>\n
    • \n\u88ab\u52a8\u5f0f\u62a2\u65ad\uff08Trap\uff09\uff1a<\/strong><\/p>\n
        \n
      • \u5728\u88ab\u52a8\u5f0f\u62a2\u65ad\u4e2d\uff0c\u7ebf\u7a0b\u4e0d\u4e3b\u52a8\u68c0\u67e5\u662f\u5426\u9700\u8981\u505c\u987f\uff0c\u800c\u662f\u7531\u64cd\u4f5c\u7cfb\u7edf\u6216\u5176\u4ed6\u63a7\u5236\u7ebf\u7a0b\u8d1f\u8d23\u901a\u77e5\u3002\u5f53\u9700\u8981\u8fdb\u884c\u5783\u573e\u56de\u6536\u7b49\u64cd\u4f5c\u65f6\uff0c\u63a7\u5236\u7ebf\u7a0b\u5411\u6240\u6709\u7ebf\u7a0b\u53d1\u9001\u4fe1\u53f7\uff0c\u901a\u77e5\u5b83\u4eec\u5728\u5b89\u5168\u70b9\u505c\u987f\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n

        \u5e38\u89c1\u7684\u5b89\u5168\u70b9\u5305\u62ec\u65b9\u6cd5\u8c03\u7528\u7ed3\u675f\u3001\u5faa\u73af\u8df3\u8f6c\u3001\u5f02\u5e38\u8df3\u8f6c\u7b49\u3002\u5728\u8fd9\u4e9b\u4f4d\u7f6e\u4e0a\uff0c\u7ebf\u7a0b\u7684\u6267\u884c\u72b6\u6001\u76f8\u5bf9\u8f83\u4e3a\u4e00\u81f4\uff0c\u53ef\u4ee5\u5b89\u5168\u5730\u8fdb\u884c\u4e00\u4e9b\u64cd\u4f5c\u3002<\/p>\n

        Safepoint\u7684\u4f5c\u7528\u4e3b\u8981\u6709\u4ee5\u4e0b\u51e0\u4e2a\u65b9\u9762\uff1a<\/p>\n

          \n
        • \n\u5783\u573e\u56de\u6536\uff1a<\/strong> \u5728\u5b89\u5168\u70b9\u4e0a\u505c\u987f\u7ebf\u7a0b\uff0c\u786e\u4fdd\u5783\u573e\u56de\u6536\u5668\u53ef\u4ee5\u5b89\u5168\u5730\u6267\u884c\u3002\u8fd9\u6837\uff0c\u5783\u573e\u56de\u6536\u5668\u4e0d\u9700\u8981\u8003\u8651\u7ebf\u7a0b\u7684\u8fd0\u884c\u72b6\u6001\uff0c\u53ef\u4ee5\u66f4\u8f7b\u677e\u5730\u8fdb\u884c\u5185\u5b58\u56de\u6536\u3002\n<\/li>\n
        • \n\u7ebf\u7a0b\u6808\u5b89\u5168\u68c0\u67e5\uff1a<\/strong> \u5728\u5b89\u5168\u70b9\u4e0a\uff0c\u53ef\u4ee5\u786e\u4fdd\u7ebf\u7a0b\u7684\u6808\u72b6\u6001\u662f\u4e00\u81f4\u7684\uff0c\u4ee5\u4fbf\u8fdb\u884c\u6808\u5e27\u7684\u5b89\u5168\u68c0\u67e5\u548c\u5904\u7406\u3002\n<\/li>\n
        • \n\u7ebf\u7a0b\u6302\u8d77\u548c\u6062\u590d\uff1a<\/strong> \u5728\u67d0\u4e9b\u60c5\u51b5\u4e0b\uff0c\u9700\u8981\u505c\u987f\u7ebf\u7a0b\u4ee5\u8fdb\u884c\u4e00\u4e9b\u64cd\u4f5c\uff0c\u4f8b\u5982\u7ebf\u7a0b\u7684\u6302\u8d77\u548c\u6062\u590d\u3002\n<\/li>\n<\/ul>\n

          Safepoint\u673a\u5236\u662fJava\u865a\u62df\u673a\u4fdd\u8bc1\u5404\u79cd\u64cd\u4f5c\u7684\u53ef\u9760\u6027\u548c\u4e00\u81f4\u6027\u7684\u5173\u952e\u673a\u5236\u4e4b\u4e00\u3002\u5728\u591a\u7ebf\u7a0b\u73af\u5883\u4e0b\uff0c\u786e\u4fdd\u7ebf\u7a0b\u5728\u5b89\u5168\u70b9\u4e0a\u505c\u987f\u662f\u975e\u5e38\u91cd\u8981\u7684\uff0c\u4ee5\u907f\u514d\u56e0\u4e3a\u7ebf\u7a0b\u72b6\u6001\u7684\u4e0d\u4e00\u81f4\u6027\u5bfc\u81f4\u7684\u5404\u79cd\u95ee\u9898\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

          Safepoint\uff08\u5b89\u5168\u70b9\uff09\u662fJava\u865a\u62df\u673a\u4e2d\u7684\u4e00\u79cd\u673a\u5236\uff0c\u7528\u4e8e\u786e\u4fdd\u7ebf\u7a0b\u5728\u7279\u5b9a\u7684\u4f4d\u7f6e\uff08\u5b89\u5168\u70b9\uff09\u505c\u987f\uff0c\u4ee5\u4fbf\u8fdb\u884c\u4e00\u4e9b […]<\/p>\n","protected":false},"author":9,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[119],"tags":[],"class_list":["post-11358","post","type-post","status-publish","format-standard","hentry","category-jvm"],"_links":{"self":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/11358","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/users\/9"}],"replies":[{"embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/comments?post=11358"}],"version-history":[{"count":2,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/11358\/revisions"}],"predecessor-version":[{"id":17035,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/11358\/revisions\/17035"}],"wp:attachment":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/media?parent=11358"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/categories?post=11358"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/tags?post=11358"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}