{"id":4067,"date":"2024-04-26T08:08:14","date_gmt":"2024-04-26T00:08:14","guid":{"rendered":"https:\/\/xinchewhd.com.cn\/index.php\/%e9%9d%a2%e8%af%95\/%e8%85%be%e8%ae%af%e9%9d%a2%e8%af%95%e9%a2%98%ef%bc%9ajava%e4%b8%ad%e4%bb%80%e4%b9%88%e6%83%85%e5%86%b5%e4%b8%8b%e4%bc%9a%e8%a7%a6%e5%8f%91minor-gc%e5%92%8cfull-gc%ef%bc%9f\/"},"modified":"2024-04-26T08:08:14","modified_gmt":"2024-04-26T00:08:14","slug":"%e8%85%be%e8%ae%af%e9%9d%a2%e8%af%95%e9%a2%98%ef%bc%9ajava%e4%b8%ad%e4%bb%80%e4%b9%88%e6%83%85%e5%86%b5%e4%b8%8b%e4%bc%9a%e8%a7%a6%e5%8f%91minor-gc%e5%92%8cfull-gc%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/xinchewhd.com.cn\/index.php\/%e9%9d%a2%e8%af%95\/%e8%85%be%e8%ae%af%e9%9d%a2%e8%af%95%e9%a2%98%ef%bc%9ajava%e4%b8%ad%e4%bb%80%e4%b9%88%e6%83%85%e5%86%b5%e4%b8%8b%e4%bc%9a%e8%a7%a6%e5%8f%91minor-gc%e5%92%8cfull-gc%ef%bc%9f\/","title":{"rendered":"\u817e\u8baf\u9762\u8bd5\u9898\uff1aJava\u4e2d\u4ec0\u4e48\u60c5\u51b5\u4e0b\u4f1a\u89e6\u53d1Minor GC\u548cFull GC\uff1f"},"content":{"rendered":"
\n

Minor GC<\/span><\/strong>\u548cFull GC<\/strong>\u662fJava\u865a\u62df\u673a\uff08JVM\uff09\u4e2d\u7528\u4e8e\u56de\u6536\u4e0d\u518d\u4f7f\u7528\u5bf9\u8c61\u5185\u5b58\u7684\u4e24\u79cd\u5783\u573e\u56de\u6536\uff08GC\uff09\u8fc7\u7a0b\u3002\u5728\u533a\u5206\u4e0d\u540c\u5783\u573e\u56de\u6536\u65b9\u5f0f\u4e4b\u524d\uff0c\u6211\u4eec\u9700\u8981\u5148\u4e86\u89e3\u4e00\u4e0bJava\u5185\u5b58\u533a\u57df\u7684\u5212\u5206\u3002<\/span>\u5728Java\u5806\u533a\u4e2d\uff0c\u5185\u5b58\u88ab\u5206\u4e3a\u4ee5\u4e0b\u51e0\u4e2a\u90e8\u5206\uff1a<\/span><\/p>\n

    \n
  1. \n

    \u5e74\u8f7b\u4ee3 (Young Generation):<\/span><\/strong> \u8fd9\u90e8\u5206\u5185\u5b58\u7528\u4e8e\u65b0\u751f\u6210\u7684\u5bf9\u8c61\u3002\u5927\u90e8\u5206\u5bf9\u8c61\u90fd\u662f\u671d\u751f\u5915\u6b7b\u7684\uff0c\u56e0\u6b64\u5e74\u8f7b\u4ee3\u7ecf\u5e38\u53d1\u751f\u5783\u573e\u56de\u6536\uff0c\u5373Minor GC\u3002\u5b83\u901a\u5e38\u88ab\u8fdb\u4e00\u6b65\u7ec6\u5206\u4e3a\u4e09\u4e2a\u533a\u57df\uff1a<\/span><\/p>\n<\/li>\n

      \n
    • \n

      Eden\u533a: \u6240\u6709\u65b0\u521b\u5efa\u7684\u5bf9\u8c61\u9996\u5148\u88ab\u5206\u914d\u5230\u8fd9\u91cc\u3002<\/span><\/p>\n<\/li>\n

    • \n

      \u4e24\u4e2aSurvivor\u533a(S0\u548cS1): \u5b58\u6d3b\u4e0b\u6765\u7684\u5bf9\u8c61\u4f1a\u4eceEden\u533a\u79fb\u52a8\u5230\u4e00\u4e2aSurvivor\u533a\uff0c\u7136\u540e\u5728Survivor\u533a\u4e4b\u95f4\u6765\u56de\u590d\u5236\uff0c\u968f\u7740\u6b21\u6570\u7684\u589e\u52a0\uff0c\u6700\u7ec8\u5982\u679c\u5bf9\u8c61\u8fd8\u5b58\u6d3b\uff0c\u5b83\u4eec\u4f1a\u88ab\u79fb\u52a8\u5230\u8001\u5e74\u4ee3\u3002<\/span><\/p>\n<\/li>\n<\/ul>\n

    • \n

      \u8001\u5e74\u4ee3 (Old or Tenured Generation)<\/span><\/strong>: \u5728\u5e74\u8f7b\u4ee3\u4e2d\u7ecf\u8fc7\u4e00\u5b9a\u6570\u91cfMinor GC\u4ecd\u7136\u5b58\u6d3b\u7684\u5bf9\u8c61\u4f1a\u88ab\u79fb\u52a8\u5230\u8001\u5e74\u4ee3\u3002\u8fd9\u90e8\u5206\u5185\u5b58\u7684\u56de\u6536\u9891\u7387\u4f4e\u4e8e\u5e74\u8f7b\u4ee3\uff0c\u56e0\u4e3a\u5047\u8bbe\u8fd9\u91cc\u7684\u5bf9\u8c61\u751f\u547d\u5468\u671f\u8f83\u957f\u3002\u89e6\u53d1\u8001\u5e74\u4ee3\u7684GC\uff0c\u5373Full GC\uff0c\u4f1a\u5bf9\u7cfb\u7edf\u6027\u80fd\u4ea7\u751f\u8f83\u5927\u5f71\u54cd\u3002<\/span><\/p>\n<\/li>\n

    • \n

      \u5143\u7a7a\u95f4 (Metaspace)<\/span><\/strong>: \u5728JDK 8\u53ca\u4ee5\u540e\u7684\u7248\u672c\u4e2d\uff0c\u6c38\u4e45\u4ee3(PermGen)\u5df2\u7ecf\u88ab\u5143\u7a7a\u95f4\u6240\u53d6\u4ee3\u3002\u5143\u7a7a\u95f4\u5e76\u4e0d\u5728\u5806\u5185\u5b58\u4e2d\uff0c\u800c\u662f\u4f7f\u7528\u672c\u5730\u5185\u5b58\u3002JVM\u5c06\u7c7b\u7684\u5143\u6570\u636e\u653e\u7f6e\u5728\u8fd9\u4e2a\u7a7a\u95f4\u91cc\uff0c\u5982\u7c7b\u7684\u5b9a\u4e49\u4fe1\u606f\u7b49\u3002Metaspace\u7684\u5927\u5c0f\u53ea\u53d7\u5230\u7cfb\u7edf\u53ef\u7528\u5185\u5b58\u7684\u9650\u5236\u3002<\/span><\/p>\n<\/li>\n<\/ol>\n

      \u89e6\u53d1Minor GC\u7684\u60c5\u51b5\uff1a<\/span><\/strong><\/h3>\n

      Minor GC\u4e3b\u8981\u53d1\u751f\u5728\u5e74\u8f7b\u4ee3\u3002\u4ee5\u4e0b\u60c5\u51b5\u4f1a\u89e6\u53d1Minor GC\uff1a<\/span><\/p>\n

        \n
      1. \n

        \u5e94\u7528\u7a0b\u5e8f\u65b0\u521b\u5efa\u5bf9\u8c61\uff1a<\/span><\/strong>\u5f53\u5e94\u7528\u7a0b\u5e8f\u7ee7\u7eed\u521b\u5efa\u65b0\u5bf9\u8c61\uff0c\u5e76\u4e14\u5e74\u8f7b\u4ee3\u7684Eden\u533a\u57df\u586b\u6ee1\u65f6\uff0cJVM\u4f1a\u89e6\u53d1Minor GC\u6765\u6e05\u9664\u90a3\u4e9b\u65e0\u6cd5\u8fbe\u5230\u751f\u5b58\u6761\u4ef6\u7684\u5bf9\u8c61\uff08\u901a\u5e38\u662f\u6ca1\u6709\u5f15\u7528\u7684\u5bf9\u8c61\uff09\u3002<\/span><\/p>\n<\/li>\n

      2. \n

        Survivor\u7a7a\u95f4\u4e0d\u8db3\uff1a<\/span><\/strong>\u5728Eden\u533a\u8fdb\u884c\u8fc7Minor GC\u540e\uff0c\u5b58\u6d3b\u4e0b\u6765\u7684\u5bf9\u8c61\u4f1a\u88ab\u79fb\u52a8\u5230Survivor\u7a7a\u95f4\uff08S0\u548cS1\uff09\u3002\u5982\u679cSurvivor\u7a7a\u95f4\u5bb9\u7eb3\u4e0d\u4e0b\u8fd9\u4e9b\u5b58\u6d3b\u7684\u5bf9\u8c61\uff0c\u4e00\u4e9b\u5bf9\u8c61\u53ef\u80fd\u4f1a\u76f4\u63a5\u664b\u5347\u81f3\u8001\u5e74\u4ee3\uff0c\u5982\u679c\u8fde\u7eed\u591a\u6b21GC\u540e\u4ecd\u7136\u5b58\u6d3b\u7684\u5bf9\u8c61\u4e5f\u4f1a\u88ab\u79fb\u52a8\u5230\u8001\u5e74\u4ee3\u3002<\/span><\/p>\n<\/li>\n<\/ol>\n

        \u89e6\u53d1Full GC\u7684\u60c5\u51b5\uff1a<\/span><\/strong><\/h3>\n

        Full GC\u662f\u4e00\u4e2a\u66f4\u5168\u9762\u7684\u5783\u573e\u56de\u6536\u8fc7\u7a0b\uff0c\u5b83\u5305\u62ec\u4e86\u5bf9\u5e74\u8f7b\u4ee3\u3001\u8001\u5e74\u4ee3\u548c\u5143\u7a7a\u95f4\uff08\u6216\u6c38\u4e45\u4ee3\uff09\u7684\u6e05\u7406\u3002\u4ee5\u4e0b\u60c5\u51b5\u5e38\u89c1\u89e6\u53d1Full GC\uff1a<\/span><\/p>\n

          \n
        1. \n

          \u8001\u5e74\u4ee3\u7a7a\u95f4\u4e0d\u8db3<\/span>\uff1a<\/span><\/strong>\u5f53\u8001\u5e74\u4ee3\u51e0\u4e4e\u6ee1\u65f6\uff0cJVM\u4f1a\u5c1d\u8bd5\u8fdb\u884cFull GC\u6765\u6e05\u7406\u8001\u5e74\u4ee3\u4e2d\u7684\u65e0\u7528\u5bf9\u8c61\u3002<\/span><\/p>\n<\/li>\n

        2. \n

          \u65b9\u6cd5\u533a\u6216\u5143\u7a7a\u95f4\u4e0d\u8db3\uff1a<\/span><\/strong>\u5982\u679c\u8fd0\u884c\u65f6\u5e38\u91cf\u6c60\u9700\u8981\u66f4\u591a\u7684\u5185\u5b58\uff0c\u800c\u65b9\u6cd5\u533a\u6216\u5143\u7a7a\u95f4\u65e0\u6cd5\u63d0\u4f9b\u65f6\uff0c\u4f1a\u89e6\u53d1Full GC\u5c1d\u8bd5\u56de\u6536\u8fd9\u4e9b\u533a\u57df\u7684\u5185\u5b58\u3002<\/span><\/p>\n<\/li>\n

        3. \n

          System.gc()\u8c03\u7528\uff1a<\/span><\/strong>\u5982\u679c\u7cfb\u7edf\u4ee3\u7801\u4e2d\u8c03\u7528\u4e86System.gc()\uff0c\u800cJVM\u53c2\u6570\u6ca1\u6709\u8bbe\u7f6e\u5ffd\u7565\u663e\u5f0fGC\u8c03\u7528\uff0c\u5219JVM\u53ef\u80fd\u6267\u884cFull GC\u3002<\/span><\/p>\n<\/li>\n

        4. \n

          \u5927\u5bf9\u8c61\u76f4\u63a5\u5206\u914d\u5728\u8001\u5e74\u4ee3\uff1a<\/span><\/strong>\u5bf9\u4e8e\u8f83\u5927\u7684\u5bf9\u8c61\uff0cJVM\u53ef\u80fd\u76f4\u63a5\u5728\u8001\u5e74\u4ee3\u5206\u914d\u5185\u5b58\uff0c\u5982\u679c\u8001\u5e74\u4ee3\u7a7a\u95f4\u4e0d\u8db3\uff0c\u53ef\u80fd\u89e6\u53d1Full GC\u3002<\/span><\/p>\n<\/li>\n

        5. \n

          JVM\u5185\u90e8\u8bca\u65ad\uff1a<\/span><\/strong>JVM\u8fdb\u884c\u67d0\u4e9b\u5185\u90e8\u8bca\u65ad\u4efb\u52a1\u65f6\uff0c\u5982\u679c\u53d1\u73b0\u7a7a\u95f4\u4e0d\u8db3\uff0c\u53ef\u80fd\u4e5f\u4f1a\u89e6\u53d1Full GC\u3002<\/span><\/p>\n<\/li>\n

        6. \n

          \u5e74\u8f7b\u4ee3\u664b\u5347\u7b56\u7565\uff1a<\/span><\/strong>JVM\u4e2d\u6709\u914d\u7f6e\u53c2\u6570\u51b3\u5b9a\u4e86\u5bf9\u8c61\u4ece\u5e74\u8f7b\u4ee3\u664b\u5347\u5230\u8001\u5e74\u4ee3\u7684\u9608\u503c\uff0c\u5982\u679c\u8d85\u8fc7\u8fd9\u4e2a\u9608\u503c\uff0c\u4f1a\u89e6\u53d1Full GC\u3002<\/span><\/p>\n<\/li>\n

        7. \n

          \u5176\u4ed6\u56e0\u7d20\uff1a<\/span><\/strong>\u6bd4\u5982\u8001\u5e74\u4ee3\u4e2d\u5927\u91cf\u788e\u7247\u5316\u5bfc\u81f4\u65e0\u6cd5\u627e\u5230\u8db3\u591f\u7684\u8fde\u7eed\u7a7a\u95f4\u6765\u5206\u914d\u5927\u5bf9\u8c61\uff0c\u5373\u4f7f\u603b\u4f53\u4e0a\u6709\u7a7a\u95f4\u3002<\/span><\/p>\n<\/li>\n<\/ol>\n

          \u6bcf\u79cd\u5783\u573e\u56de\u6536\u5668\u90fd\u6709\u81ea\u5df1\u7684\u7b56\u7565\u548c\u573a\u666f\uff0c\u4f8b\u5982G1 GC\u65e8\u5728\u901a\u8fc7\u9002\u65f6\u7684Mixed GC\u6765\u907f\u514dFull GC\u7684\u957f\u65f6\u95f4\u505c\u987f\uff0c\u800cZGC\u548cShenandoah\u5219\u91c7\u7528\u66f4\u5148\u8fdb\u7684\u5e76\u53d1\u6536\u96c6\u6280\u672f\u6765\u6700\u5c0f\u5316STW\uff08Stop-The-World\uff09\u4e8b\u4ef6\u3002<\/span><\/p>\n

          \u4e86\u89e3\u4f55\u65f6\u4f1a\u89e6\u53d1Minor GC\u548cFull GC\u5bf9\u4e8e\u6027\u80fd\u4f18\u5316\u548c\u7cfb\u7edf\u7a33\u5b9a\u6027\u975e\u5e38\u91cd\u8981\uff0c\u56e0\u6b64\u5f00\u53d1\u4eba\u5458\u548c\u6027\u80fd\u8c03\u4f18\u5de5\u7a0b\u5e08\u7ecf\u5e38\u9700\u8981\u76d1\u63a7GC\u65e5\u5fd7\u548c\u4f7f\u7528\u5404\u79cd\u76d1\u63a7\u5de5\u5177\u6765\u5206\u6790\u5783\u573e\u56de\u6536\u884c\u4e3a\u3002<\/span><\/span><\/p>\n

          <\/mp-style-type><\/p>\n

          \n

          \u672c\u7bc7\u6587\u7ae0\u6765\u6e90\u4e8e\u5fae\u4fe1\u516c\u4f17\u53f7: \u4e92\u8054\u7f51\u9762\u8bd5\u5c0f\u5e2e\u624b <\/p>\n<\/blockquote>\n<\/div>\n","raw":"","protected":false},"excerpt":{"rendered":"

          Minor GC\u548cFull GC\u662fJava\u865a\u62df\u673a\uff08JVM\uff09\u4e2d\u7528\u4e8e\u56de\u6536\u4e0d\u518d\u4f7f\u7528\u5bf9\u8c61\u5185\u5b58\u7684\u4e24\u79cd\u5783\u573e\u56de\u6536\uff08GC\uff09\u8fc7\u7a0b\u3002\u5728\u533a\u5206\u4e0d\u540c\u5783\u573e\u56de\u6536 …<\/p>\n","protected":false},"author":1,"featured_media":4064,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"emotion":"","emotion_color":"","title_style":"","license":"","footnotes":""},"categories":[30],"tags":[],"class_list":["post-4067","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-30"],"post_thumbnail_image":"https:\/\/wp-moto-1258805347.cos.ap-shanghai.myqcloud.com\/2024\/05\/20240524144913887-150x150.jpeg","content_first_image":null,"post_medium_image_300":"https:\/\/wp-moto-1258805347.cos.ap-shanghai.myqcloud.com\/2024\/05\/20240524144913887-300x127.jpeg","post_thumbnail_image_624":"https:\/\/wp-moto-1258805347.cos.ap-shanghai.myqcloud.com\/2024\/05\/20240524144913887-1024x435.jpeg","post_frist_image":null,"post_medium_image":"https:\/\/wp-moto-1258805347.cos.ap-shanghai.myqcloud.com\/2024\/05\/20240524144913887-300x127.jpeg","post_large_image":"https:\/\/wp-moto-1258805347.cos.ap-shanghai.myqcloud.com\/2024\/05\/20240524144913887-1024x435.jpeg","post_full_image":"https:\/\/wp-moto-1258805347.cos.ap-shanghai.myqcloud.com\/2024\/05\/20240524144913887.jpeg","post_all_images":[],"videoAdId":"","listAd":"0","listAdId":"","listAdEvery":6,"total_comments":0,"category_name":"\u9762\u8bd5","post_date":"2024-04-26","like_count":"0","praiseWord":"\u9f13\u52b1","copyright_state":"","excitationAd":"0","rewardedVideoAdId":"","detailAdId":"","detailAd":"0","enterpriseMinapp":"0","audios":[],"postImageUrl":"https:\/\/wp-moto-1258805347.cos.ap-shanghai.myqcloud.com\/2023\/05\/20230519082947553.jpg","avatarurls":[],"related_posts":null,"pageviews":350,"next_post_id":4055,"next_post_title":"\u5b57\u8282\u9762\u8bd5\u9898\uff1aJava\u4e2d\u5982\u679c\u4e24\u4e2a\u5b57\u7b26\u4e32\u5bf9\u8c61\u6709\u76f8\u540c\u7684\u503c\uff0c\u5b83\u4eec\u4f1a\u5b58\u50a8\u5728\u5e38\u91cf\u6c60\u4e2d\u7684\u540c\u4e00\u4e2a\u4f4d\u7f6e\u5417\uff1f","previous_post_id":4071,"previous_post_title":"\u9762\u8bd5\u5b98\uff1a\u7b80\u8981\u8bf4\u4e00\u4e0b\u7ebf\u7a0b\u548c\u534f\u7a0b\u7684\u533a\u522b\uff1f","_links":{"self":[{"href":"https:\/\/xinchewhd.com.cn\/index.php\/wp-json\/wp\/v2\/posts\/4067","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/xinchewhd.com.cn\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/xinchewhd.com.cn\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/xinchewhd.com.cn\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/xinchewhd.com.cn\/index.php\/wp-json\/wp\/v2\/comments?post=4067"}],"version-history":[{"count":0,"href":"https:\/\/xinchewhd.com.cn\/index.php\/wp-json\/wp\/v2\/posts\/4067\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/xinchewhd.com.cn\/index.php\/wp-json\/wp\/v2\/media\/4064"}],"wp:attachment":[{"href":"https:\/\/xinchewhd.com.cn\/index.php\/wp-json\/wp\/v2\/media?parent=4067"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/xinchewhd.com.cn\/index.php\/wp-json\/wp\/v2\/categories?post=4067"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/xinchewhd.com.cn\/index.php\/wp-json\/wp\/v2\/tags?post=4067"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}