{"id":38456,"date":"2025-04-24T02:01:47","date_gmt":"2025-04-23T18:01:47","guid":{"rendered":"https:\/\/www.yunshan.net\/blog\/?p=38456"},"modified":"2025-04-24T02:01:47","modified_gmt":"2025-04-23T18:01:47","slug":"prometheus%e7%9a%84%e7%9b%91%e6%8e%a7%e6%95%b0%e6%8d%ae%e6%9b%b4%e6%96%b0%e5%92%8c%e5%88%b7%e6%96%b0%e6%9c%ba%e5%88%b6%e6%98%af%e6%80%8e%e6%a0%b7%e7%9a%84","status":"publish","type":"post","link":"https:\/\/www.yunshan.net\/blog\/archives\/38456.html","title":{"rendered":"Prometheus\u7684\u76d1\u63a7\u6570\u636e\u66f4\u65b0\u548c\u5237\u65b0\u673a\u5236\u662f\u600e\u6837\u7684"},"content":{"rendered":"

\n

\"Prometheus\u7684\u76d1\u63a7\u6570\u636e\u66f4\u65b0\u548c\u5237\u65b0\u673a\u5236\u662f\u600e\u6837\u7684\"<\/p>\n<\/p>\n

Prometheus\u7684\u76d1\u63a7\u6570\u636e\u66f4\u65b0\u673a\u5236\u4e3b\u8981\u6d89\u53ca\u6570\u636e\u7684\u91c7\u96c6\u548c\u5904\u7406\u3002\u4ee5\u4e0b\u662f\u5176\u4e3b\u8981\u7279\u70b9\uff1a<\/p>\n

1. \u6570\u636e\u91c7\u96c6\u65b9\u5f0f<\/strong><\/p>\n

  • Prometheus\u901a\u8fc7Pull\u6a21\u5f0f\u4e3b\u52a8\u4ece\u76d1\u63a7\u76ee\u6807\u4e2d\u6536\u96c6\u6570\u636e\u3002\u5b83\u5b9a\u671f\u8f6e\u8be2\u76ee\u6807\u4e2d\u7684`\/metrics`\u7aef\u70b9\uff0c\u4ece\u4e2d\u83b7\u53d6\u65f6\u95f4\u5e8f\u5217\u6570\u636e\u3002<\/li>\n
  • \u652f\u6301\u4e24\u79cd\u6570\u636e\u91c7\u96c6\u65b9\u5f0f\uff1a<\/li>\n
  • \u4e3b\u52a8\u65b9\u5f0f\uff08PULL\uff09<\/strong>\uff1a\u4f7f\u7528Prometheus\u63d0\u4f9b\u7684\u5b98\u65b9SDK\uff0c\u5229\u7528SDK\u53ef\u4ee5\u81ea\u5b9a\u4e49\u5e76\u5bfc\u51fa\u81ea\u5df1\u7684\u4e1a\u52a1\u6307\u6807\uff08\u6216\u8005\u4f7f\u7528Exporter\uff09\u3002\u4e3b\u52a8\u6a21\u5f0f\u5bf9Server\u7aef\u538b\u529b\u8f83\u5927\u3002<\/li>\n
  • \u88ab\u52a8\u65b9\u5f0f\uff08PUSH\uff09<\/strong>\uff1a\u9002\u7528\u4e8e\u77ed\u65f6\u95f4\u6267\u884c\u7684\u811a\u672c\u4efb\u52a1\u6216\u8005\u4e0d\u597d\u76f4\u63a5Pull\u6307\u6807\u7684\u670d\u52a1\uff08\u8fdb\u7a0b\uff09\uff0cPrometheus\u63d0\u4f9b\u4e86PushGateWay\u7f51\u5173\u7ed9\u6b64\u7c7b\u4efb\u52a1\u5c06\u670d\u52a1\u6307\u6807\u4e3b\u52a8\u63a8\u5230\u7f51\u5173\uff0cPrometheus\u518d\u4ece\u7f51\u5173\u91ccPull\u6307\u6807\u3002<\/li>\n

    2. \u6570\u636e\u7c7b\u578b<\/strong><\/p>\n

  • Prometheus\u652f\u6301\u56db\u79cd\u4e3b\u8981\u7684metric\u7c7b\u578b\uff0c\u6bcf\u79cd\u7c7b\u578b\u9002\u7528\u4e8e\u4e0d\u540c\u7684\u76d1\u63a7\u573a\u666f\uff1a<\/li>\n
  • Counter\uff08\u8ba1\u6570\u5668\uff09<\/strong>\uff1a\u53ea\u80fd\u9012\u589e\u7684\u8ba1\u6570\u5668\uff0c\u7528\u4e8e\u8bb0\u5f55\u4e8b\u4ef6\u7684\u7d2f\u8ba1\u6b21\u6570\uff0c\u4f8b\u5982HTTP\u8bf7\u6c42\u603b\u6570\u3002\u8ba1\u6570\u5668\u7684\u503c\u4e0d\u4f1a\u51cf\u5c11\uff0c\u9664\u975e\u7cfb\u7edf\u91cd\u542f\u6216\u88ab\u660e\u786e\u91cd\u7f6e\uff0c\u5982`http_requests_total`\u8868\u793a\u7d2f\u8ba1\u7684HTTP\u8bf7\u6c42\u6b21\u6570\u3002<\/li>\n
  • Gauge\uff08\u4eea\u8868\uff09<\/strong>\uff1a\u53ef\u4ee5\u589e\u51cf\u7684\u6307\u6807\uff0c\u7528\u4e8e\u8868\u793a\u77ac\u65f6\u503c\uff0c\u4f8b\u5982\u5f53\u524d\u5185\u5b58\u4f7f\u7528\u91cf\u6216CPU\u5229\u7528\u7387\u3002\u4eea\u8868\u7684\u503c\u53ef\u4ee5\u4e0a\u4e0b\u6ce2\u52a8\uff0c\u9002\u5408\u7528\u4e8e\u76d1\u63a7\u8d44\u6e90\u4f7f\u7528\u60c5\u51b5\uff0c\u5982`memory_usage_bytes`\u8868\u793a\u5f53\u524d\u5185\u5b58\u4f7f\u7528\u91cf\u3002<\/li>\n
  • Histogram\uff08\u76f4\u65b9\u56fe\uff09<\/strong>\uff1a\u7528\u4e8e\u6d4b\u91cf\u4e8b\u4ef6\u7684\u5206\u5e03\u60c5\u51b5\uff0c\u4f8b\u5982\u8bf7\u6c42\u5ef6\u8fdf\u3002\u76f4\u65b9\u56fe\u4f1a\u5c06\u6d4b\u91cf\u503c\u5206\u5e03\u5728\u9884\u5148\u5b9a\u4e49\u7684\u6876\uff08buckets\uff09\u4e2d\uff0c\u5e76\u8bb0\u5f55\u6bcf\u4e2a\u6876\u5185\u7684\u4e8b\u4ef6\u6570\u91cf\uff0c\u5982`http_request_duration_seconds`\u8868\u793aHTTP\u8bf7\u6c42\u7684\u54cd\u5e94\u65f6\u95f4\u5206\u5e03\u3002<\/li>\n
  • Summary\uff08\u6458\u8981\uff09<\/strong>\uff1a\u7c7b\u4f3c\u4e8e\u76f4\u65b9\u56fe\uff0c\u7528\u4e8e\u7edf\u8ba1\u4e8b\u4ef6\u7684\u5206\u5e03\u60c5\u51b5\u548c\u603b\u6570\uff0c\u540c\u65f6\u63d0\u4f9b\u5206\u4f4d\u6570\u8ba1\u7b97\u3002\u4e0e\u76f4\u65b9\u56fe\u4e0d\u540c\uff0c\u6458\u8981\u662f\u5728\u5ba2\u6237\u7aef\u8fdb\u884c\u5206\u4f4d\u6570\u8ba1\u7b97\uff0c\u56e0\u6b64\u66f4\u52a0\u9002\u5408\u4f4e\u5ef6\u8fdf\u573a\u666f\uff0c\u5982`rpc_duration_seconds`\u8868\u793aRPC\u8c03\u7528\u7684\u6301\u7eed\u65f6\u95f4\u5206\u5e03\u3002<\/li>\n

    3. \u6570\u636e\u8fc7\u6ee4\u673a\u5236<\/strong><\/p>\n

  • Prometheus\u63d0\u4f9b\u4e86keep\u6216drop\u673a\u5236\uff0c\u5982\u679c\u8bbe\u7f6e\u4e86keep\u673a\u5236\uff0c\u5219\u4f1a\u4fdd\u7559\u6240\u6709\u5339\u914d\u6807\u7b7e\u7684\u6570\u636e\uff1b\u5982\u679c\u8bbe\u7f6e\u4e86drop\u673a\u5236\uff0c\u5219\u4f1a\u4e22\u5f03\u5339\u914d\u6807\u7b7e\u7684\u6570\u636e\uff0c\u4ece\u800c\u5b8c\u6210\u6570\u636e\u8fc7\u6ee4\u3002<\/li>\n

    \u76d1\u63a7\u6570\u636e\u5237\u65b0\u673a\u5236<\/h2>\n

    Prometheus\u7684\u76d1\u63a7\u6570\u636e\u5237\u65b0\u673a\u5236\u4e3b\u8981\u6d89\u53ca\u6570\u636e\u7684\u5b58\u50a8\u548c\u67e5\u8be2\u3002\u4ee5\u4e0b\u662f\u5176\u4e3b\u8981\u7279\u70b9\uff1a<\/p>\n

    1. \u6570\u636e\u5b58\u50a8\u65b9\u5f0f<\/strong><\/p>\n

  • Prometheus\u5c06\u6700\u8fd1\u7684\u6570\u636e\u4fdd\u5b58\u5728\u5185\u5b58\u4e2d\uff0c\u8fd9\u6837\u67e5\u8be2\u6700\u8fd1\u7684\u6570\u636e\u4f1a\u53d8\u5f97\u975e\u5e38\u5feb\uff0c\u7136\u540e\u901a\u8fc7\u4e00\u4e2acompactor\u5b9a\u65f6\u5c06\u6570\u636e\u6253\u5305\u5230\u78c1\u76d8\u3002\u6570\u636e\u5728\u5185\u5b58\u4e2d\u6700\u5c11\u4fdd\u75592\u4e2a\u5c0f\u65f6\uff08`storage.tsdb.min\n
  • block – duration`\uff09\u3002\u4e3a\u4e86\u9632\u6b62\u7a0b\u5e8f\u5d29\u6e83\u5bfc\u81f4\u6570\u636e\u4e22\u5931\uff0c\u5b9e\u73b0\u4e86WAL\uff08write – ahead – log\uff09\u673a\u5236\uff0c\u542f\u52a8\u65f6\u4f1a\u4ee5\u5199\u5165\u65e5\u5fd7\uff08WAL\uff09\u7684\u65b9\u5f0f\u6765\u5b9e\u73b0\u91cd\u64ad\uff0c\u4ece\u800c\u6062\u590d\u6570\u636e\u3002<\/li>\n<\/li>\n
  • \u5728Prometheus\u5185\u90e8\uff0cchunk\u662f\u7528\u6765\u5b58\u50a8\u538b\u7f29\u540e\u7684\u6837\u672csample\u6570\u636e\u7684\u6700\u5c0f\u5355\u4f4d\u3002chunk\u7684\u5927\u5c0f1KB\uff0c\u6bcf\u4e2achunk\u53ef\u4ee5\u5b58\u50a8\u6700\u591a120\u4e2a\u6837\u672c\uff0c\u5f53chunk\u5b58\u6ee1120\u4e2a\u6837\u672c\u6216\u8d85\u8fc7\u4e86chunkRange\u7684\u65f6\u95f4\u8303\u56f4\uff08\u9ed8\u8ba4\u60c5\u51b5\u4e3a2h\uff09\uff0c\u5c31\u4f1a\u5199\u5230\u65b0\u7684chunk\u91cc\u3002<\/li>\n
  • Prometheus\u4ee5\u6bcf2\u4e2a\u5c0f\u65f6\u4e3a\u4e00\u4e2a\u65f6\u95f4\u7a97\u53e3\uff0c\u5373\u5c062\u5c0f\u65f6\u5185\u4ea7\u751f\u7684\u6570\u636e\u5b58\u50a8\u5728\u4e00\u4e2ablock\u4e2d\uff0c\u76d1\u63a7\u6570\u636e\u4f1a\u4ee5\u65f6\u95f4\u6bb5\u7684\u5f62\u5f0f\u88ab\u62c6\u5206\u6210\u4e0d\u540c\u7684block\u3002block\u4f1a\u538b\u7f29\u3001\u5408\u5e76\u6210\u5386\u53f2\u6570\u636e\u5757\u3001\u968f\u7740\u538b\u7f29\u5408\u5e76\u4f1a\u51cf\u5c11block\u7684\u4e2a\u6570\u3002\u6bcf\u4e2ablock\u90fd\u62e5\u6709\u5168\u5c40\u552f\u4e00\u7684UUID\uff0c\u6bcf\u4e2ablock\u90fd\u6709\u81ea\u5df1\u5355\u72ec\u7684\u76ee\u5f55\uff0c\u91cc\u9762\u5305\u542b\u8be5\u65f6\u95f4\u7a97\u53e3\u5185\u6240\u6709\u7684chunk\u3001Index\u3001tombstones\u3001meta.json\u7b49\u5185\u5bb9\u3002<\/li>\n

    2. \u6570\u636e\u67e5\u8be2<\/strong><\/p>\n

  • Prometheus\u652f\u6301PromQL\u67e5\u8be2\u8bed\u8a00\uff0c\u53ef\u4ee5\u5b8c\u6210\u975e\u5e38\u590d\u6742\u7684\u67e5\u8be2\u548c\u5206\u6790\uff0c\u5bf9\u56fe\u8868\u5c55\u793a\u548c\u544a\u8b66\u975e\u5e38\u6709\u610f\u4e49\u3002\u53ef\u4ee5\u5728Prometheus\u7684WebUI\u4e0a\u901a\u8fc7PromQL\uff0c\u53ef\u89c6\u5316\u67e5\u8be2\u6307\u6807\uff0c\u4e5f\u53ef\u4ee5\u5f88\u65b9\u4fbf\u5730\u63a5\u5165\u7b2c\u4e09\u65b9\u7684\u53ef\u89c6\u5316\u5de5\u5177Grafana\u8fdb\u884c\u67e5\u8be2\u3002<\/li>\n

    3. \u6570\u636e\u5237\u65b0\u5468\u671f\u76f8\u5173\u914d\u7f6e<\/strong><\/p>\n

    \u4f8b\u5982\u5728OceanBase\u7684\u6587\u6863\u4e2d\u63d0\u5230`prometheus_sync_interval`\uff0c\u8fd9\u662fPrometheus\u76d1\u63a7\u6570\u636e\u7684\u5237\u65b0\u5468\u671f\uff0c\u9ed8\u8ba4\u4e3a1\u5206\u949f\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

    Prometheus\u7684\u76d1\u63a7\u6570\u636e\u66f4\u65b0\u673a\u5236\u4e3b\u8981\u6d89\u53ca\u6570\u636e\u7684\u91c7\u96c6\u548c\u5904\u7406\u3002\u4ee5\u4e0b\u662f\u5176\u4e3b\u8981\u7279\u70b9\uff1a 1. \u6570\u636e\u91c7\u96c6\u65b9\u5f0f Prometheus\u901a\u8fc7Pull\u6a21\u5f0f\u4e3b\u52a8\u4ece\u76d1\u63a7\u76ee\u6807\u4e2d\u6536\u96c6\u6570\u636e\u3002\u5b83\u5b9a\u671f\u8f6e\u8be2\u76ee\u6807\u4e2d\u7684`\/metrics`\u7aef\u70b9\uff0c\u4ece\u4e2d\u83b7\u53d6\u65f6\u95f4\u5e8f\u5217\u6570\u636e\u3002 \u652f\u6301\u4e24\u79cd\u6570\u636e\u91c7\u96c6\u65b9\u5f0f\uff1a \u4e3b\u52a8\u65b9\u5f0f\uff08PULL\uff09\uff1a\u4f7f\u7528Prometheus\u63d0\u4f9b\u7684\u5b98\u65b9SDK\uff0c\u5229\u7528SDK\u53ef\u4ee5\u81ea\u5b9a\u4e49\u5e76\u5bfc\u51fa\u81ea\u5df1\u7684\u4e1a\u52a1\u6307\u6807\uff08\u6216\u8005\u4f7f\u7528Exporter\uff09\u3002\u4e3b\u52a8\u6a21\u5f0f\u5bf9Server\u7aef\u538b\u529b\u8f83\u5927\u3002 \u88ab\u52a8\u65b9\u5f0f\uff08PUSH\uff09\uff1a\u9002\u7528\u4e8e\u77ed\u65f6\u95f4\u6267\u884c\u7684\u811a\u672c\u4efb\u52a1\u6216\u8005\u4e0d\u597d\u76f4\u63a5Pull\u6307\u6807\u7684\u670d\u52a1\uff08\u8fdb\u7a0b\uff09\uff0cPrometheus\u63d0\u4f9b\u4e86PushGateWay\u7f51\u5173\u7ed9\u6b64\u7c7b\u4efb\u52a1\u5c06\u670d\u52a1\u6307\u6807\u4e3b\u52a8\u63a8\u5230\u7f51\u5173\uff0cPrometheus\u518d\u4ece\u7f51\u5173\u91ccPull\u6307\u6807\u3002 2. \u6570\u636e\u7c7b\u578b Prometheus\u652f\u6301\u56db\u79cd\u4e3b\u8981\u7684metric\u7c7b\u578b\uff0c\u6bcf\u79cd\u7c7b\u578b\u9002\u7528\u4e8e\u4e0d\u540c\u7684\u76d1\u63a7\u573a\u666f\uff1a Counter\uff08\u8ba1\u6570\u5668\uff09\uff1a\u53ea\u80fd\u9012\u589e\u7684\u8ba1\u6570\u5668\uff0c\u7528\u4e8e\u8bb0\u5f55\u4e8b\u4ef6\u7684\u7d2f\u8ba1\u6b21\u6570\uff0c\u4f8b\u5982HTTP\u8bf7\u6c42\u603b\u6570\u3002\u8ba1\u6570\u5668\u7684\u503c\u4e0d\u4f1a\u51cf\u5c11\uff0c\u9664\u975e\u7cfb\u7edf\u91cd\u542f\u6216\u88ab\u660e\u786e\u91cd\u7f6e\uff0c\u5982`http_requests_total`\u8868\u793a\u7d2f\u8ba1\u7684HTTP\u8bf7\u6c42\u6b21\u6570\u3002 Gauge\uff08\u4eea\u8868\uff09\uff1a\u53ef\u4ee5\u589e\u51cf\u7684\u6307\u6807\uff0c\u7528\u4e8e\u8868\u793a\u77ac\u65f6\u503c\uff0c\u4f8b\u5982\u5f53\u524d\u5185\u5b58\u4f7f\u7528\u91cf\u6216CPU\u5229\u7528\u7387\u3002\u4eea\u8868\u7684\u503c\u53ef\u4ee5\u4e0a\u4e0b\u6ce2\u52a8\uff0c\u9002\u5408\u7528\u4e8e\u76d1\u63a7\u8d44\u6e90\u4f7f\u7528\u60c5\u51b5\uff0c\u5982`memory_usage_bytes`\u8868\u793a\u5f53\u524d\u5185\u5b58\u4f7f\u7528\u91cf\u3002 Histogram\uff08\u76f4\u65b9\u56fe\uff09\uff1a\u7528\u4e8e\u6d4b\u91cf\u4e8b\u4ef6\u7684\u5206\u5e03\u60c5\u51b5\uff0c\u4f8b\u5982\u8bf7\u6c42\u5ef6\u8fdf\u3002\u76f4\u65b9\u56fe\u4f1a\u5c06\u6d4b\u91cf\u503c\u5206\u5e03\u5728\u9884\u5148\u5b9a\u4e49\u7684\u6876\uff08buckets\uff09\u4e2d\uff0c\u5e76\u8bb0\u5f55\u6bcf\u4e2a\u6876\u5185\u7684\u4e8b\u4ef6\u6570\u91cf\uff0c\u5982`http_request_duration_seconds`\u8868\u793aHTTP\u8bf7\u6c42\u7684\u54cd\u5e94\u65f6\u95f4\u5206\u5e03\u3002 Summary\uff08\u6458\u8981\uff09\uff1a\u7c7b\u4f3c\u4e8e\u76f4\u65b9\u56fe\uff0c\u7528\u4e8e\u7edf\u8ba1\u4e8b\u4ef6\u7684\u5206\u5e03\u60c5\u51b5\u548c\u603b\u6570\uff0c\u540c\u65f6\u63d0\u4f9b\u5206\u4f4d\u6570\u8ba1\u7b97\u3002\u4e0e\u76f4\u65b9\u56fe\u4e0d\u540c\uff0c\u6458\u8981\u662f\u5728\u5ba2\u6237\u7aef\u8fdb\u884c\u5206\u4f4d\u6570\u8ba1\u7b97\uff0c\u56e0\u6b64\u66f4\u52a0\u9002\u5408\u4f4e\u5ef6\u8fdf\u573a\u666f\uff0c\u5982`rpc_duration_seconds`\u8868\u793aRPC\u8c03\u7528\u7684\u6301\u7eed\u65f6\u95f4\u5206\u5e03\u3002 3. \u6570\u636e\u8fc7\u6ee4\u673a\u5236 Prometheus\u63d0\u4f9b\u4e86keep\u6216drop\u673a\u5236\uff0c\u5982\u679c\u8bbe\u7f6e\u4e86keep\u673a\u5236\uff0c\u5219\u4f1a\u4fdd\u7559\u6240\u6709\u5339\u914d\u6807\u7b7e\u7684\u6570\u636e\uff1b\u5982\u679c\u8bbe\u7f6e\u4e86drop\u673a\u5236\uff0c\u5219\u4f1a\u4e22\u5f03\u5339\u914d\u6807\u7b7e\u7684\u6570\u636e\uff0c\u4ece\u800c\u5b8c\u6210\u6570\u636e\u8fc7\u6ee4\u3002 \u76d1\u63a7\u6570\u636e\u5237\u65b0\u673a\u5236 Prometheus\u7684\u76d1\u63a7\u6570\u636e\u5237\u65b0\u673a\u5236\u4e3b\u8981\u6d89\u53ca\u6570\u636e\u7684\u5b58\u50a8\u548c\u67e5\u8be2\u3002\u4ee5\u4e0b\u662f\u5176\u4e3b\u8981\u7279\u70b9\uff1a 1. \u6570\u636e\u5b58\u50a8\u65b9\u5f0f Prometheus\u5c06\u6700\u8fd1\u7684\u6570\u636e\u4fdd\u5b58\u5728\u5185\u5b58\u4e2d\uff0c\u8fd9\u6837\u67e5\u8be2\u6700\u8fd1\u7684\u6570\u636e\u4f1a\u53d8\u5f97\u975e\u5e38\u5feb\uff0c\u7136\u540e\u901a\u8fc7\u4e00\u4e2acompactor\u5b9a\u65f6\u5c06\u6570\u636e\u6253\u5305\u5230\u78c1\u76d8\u3002\u6570\u636e\u5728\u5185\u5b58\u4e2d\u6700\u5c11\u4fdd\u75592\u4e2a\u5c0f\u65f6\uff08`storage.tsdb.min block – duration`\uff09\u3002\u4e3a\u4e86\u9632\u6b62\u7a0b\u5e8f\u5d29\u6e83\u5bfc\u81f4\u6570\u636e\u4e22\u5931\uff0c\u5b9e\u73b0\u4e86WAL\uff08write – ahead – log\uff09\u673a\u5236\uff0c\u542f\u52a8\u65f6\u4f1a\u4ee5\u5199\u5165\u65e5\u5fd7\uff08WAL\uff09\u7684\u65b9\u5f0f\u6765\u5b9e\u73b0\u91cd\u64ad\uff0c\u4ece\u800c\u6062\u590d\u6570\u636e\u3002 \u5728Prometheus\u5185\u90e8\uff0cchunk\u662f\u7528\u6765\u5b58\u50a8\u538b\u7f29\u540e\u7684\u6837\u672csample\u6570\u636e\u7684\u6700\u5c0f\u5355\u4f4d\u3002chunk\u7684\u5927\u5c0f1KB\uff0c\u6bcf\u4e2achunk\u53ef\u4ee5\u5b58\u50a8\u6700\u591a120\u4e2a\u6837\u672c\uff0c\u5f53chunk\u5b58\u6ee1120\u4e2a\u6837\u672c\u6216\u8d85\u8fc7\u4e86chunkRange\u7684\u65f6\u95f4\u8303\u56f4\uff08\u9ed8\u8ba4\u60c5\u51b5\u4e3a2h\uff09\uff0c\u5c31\u4f1a\u5199\u5230\u65b0\u7684chunk\u91cc\u3002 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