{"id":43512,"date":"2023-07-13T03:43:11","date_gmt":"2024-01-22T15:45:51","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e6%99%ae%e7%bd%97%e7%b1%b3%e4%bf%ae%e6%96%af2-0%e7%9a%84%e5%ad%98%e5%82%a8%ef%bc%88tsdb%ef%bc%89%e7%bb%93%e6%9e%84\/"},"modified":"2024-04-30T13:18:09","modified_gmt":"2024-04-30T05:18:09","slug":"%e6%99%ae%e7%bd%97%e7%b1%b3%e4%bf%ae%e6%96%af2-0%e7%9a%84%e5%ad%98%e5%82%a8%ef%bc%88tsdb%ef%bc%89%e7%bb%93%e6%9e%84","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e6%99%ae%e7%bd%97%e7%b1%b3%e4%bf%ae%e6%96%af2-0%e7%9a%84%e5%ad%98%e5%82%a8%ef%bc%88tsdb%ef%bc%89%e7%bb%93%e6%9e%84\/","title":{"rendered":"\u666e\u7f57\u7c73\u4fee\u65af2.0\u7684\u5b58\u50a8\uff08TSDB\uff09\u7ed3\u6784"},"content":{"rendered":"<p>\u6211\u5c06\u89e3\u91caPrometheus 2.0\u6700\u5f15\u4eba\u6ce8\u76ee\u7684\u4fee\u6539\u2014\u2014\u91cd\u5199\u4e86\u5b58\u50a8prometheus\/tsdb\u7684\u7ed3\u6784\uff0c\u8bf4\u660e\u4e86\u6709\u4f55\u53d8\u5316\u3002<\/p>\n<h2>\u8bf7\u7528\u4e2d\u6587\u8fdb\u884c\u603b\u7ed3\u3002<\/h2>\n<p>(This is a paraphrase of &#8220;\u8981\u7d04&#8221; in Chinese.)<\/p>\n<p>\u5728 Prometheus 2.0 \u4e2d\uff0c\u5b58\u50a8\u7cfb\u7edf\u5b8c\u5168\u91cd\u5199\uff0c\u5bf9\u4ee5\u5f80\u7684\u95ee\u9898\u8fdb\u884c\u4e86\u6539\u8fdb\uff0c\u6781\u5927\u5730\u63d0\u5347\u4e86\u6027\u80fd\u3002<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u5927\u91cf\u306e\u30d5\u30a1\u30a4\u30eb\u304c\u3067\u304d\u308b\u3053\u3068\u306b\u3088\u308b\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306e\u554f\u984c<\/ul>\n<\/li>\n<\/ul>\n<p>\u6642\u9593\u306e\u7bc4\u56f2\u3054\u3068\u306b block \u3068\u3044\u3046\u5358\u4f4d\u3067\u307e\u3068\u3081\u3066\u7ba1\u7406\u3055\u308c\u308b\u3088\u3046\u306b\u306a\u3063\u305f<\/p>\n<p>\u30e1\u30e2\u30ea\u7ba1\u7406\u306e\u554f\u984c<\/p>\n<p>mmap \u306b\u3088\u3063\u3066\u30ab\u30fc\u30cd\u30eb\u5074\u306e\u30ad\u30e3\u30c3\u30b7\u30e5\u7ba1\u7406\u306b\u306a\u3063\u305f<\/p>\n<p>\u6b6f\u629c\u30c7\u30fc\u30bf\u306b\u3088\u308b\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u306e\u554f\u984c<\/p>\n<p>\u8ee2\u7f6e\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u304c\u5c0e\u5165\u3055\u308c\u305f<\/p>\n<p>\u6211\u4eec\u6bd4\u8f83\u4e86 Prometheus v1.6.3 \u548c v2.0.0 \u5728\u8fd0\u884c\u4e86 24 \u5c0f\u65f6\u540e\u7684\u6570\u636e\uff0c\u786e\u8ba4\u4e86\u5b98\u65b9\u516c\u544a\u6240\u8bf4\u7684\uff0c\u65e0\u8bba\u662fCPU\u8fd8\u662f\u5185\u5b58\u6027\u80fd\u90fd\u6709\u663e\u8457\u63d0\u5347\u3002<\/p>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d532f37434c4406ccee55\/5-0.png\" alt=\"image.png\" \/><\/div>\n<h2>\u8fc7\u53bb (Storage v2) \u9762\u4e34\u7684\u95ee\u9898<\/h2>\n<p>\u4e4b\u524d\u7684 Prometheus \u5b58\u50a8\u5728\u5185\u90e8\u88ab\u79f0\u4e3a\u5b58\u50a8v2\uff0c\u5b83\u4ee5\u65f6\u95f4\u5e8f\u5217\u4e3a\u5355\u4f4d\u521b\u5efa\u6587\u4ef6\uff0c\u5e76\u901a\u8fc7 Level DB \u7ba1\u7406\u7d22\u5f15\u3002\u6bcf\u4e2a\u65f6\u95f4\u5e8f\u5217\u6839\u636e\u552f\u4e00\u7684\u6807\u7b7e\u7ec4\u5408\u8fdb\u884c\u521b\u5efa\uff0c\u4f8b\u5982 node_cpu { instance = &#8220;x&#8221;\uff0ccpu = &#8220;cpu0&#8221; } \u548c node_cpu { instance = &#8220;x&#8221;\uff0ccpu = &#8220;cpu1&#8221; } \u5c06\u6210\u4e3a\u4e0d\u540c\u7684\u65f6\u95f4\u5e8f\u5217\uff08\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0ccpu \u6807\u7b7e\u4e0d\u540c\uff09\u3002<\/p>\n<p>\u6570\u636e\u6587\u4ef6\u7684\u7ed3\u6784\u5982\u4e0b\u6240\u793a\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"nb\">.<\/span>\r\n\u251c\u2500\u2500 00 <span class=\"c\"># time series \u306e fingerprint (SHA 256) \u306e\u5148\u982d 2 \u6587\u5b57\u304c\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u540d<\/span>\r\n\u2502\u00a0\u00a0 \u251c\u2500\u2500 000011da572e51.db <span class=\"c\"># time series \u3054\u3068\u306e\u30c7\u30fc\u30bf\u30d5\u30a1\u30a4\u30eb\u3002\u30d5\u30a1\u30a4\u30eb\u540d\u306f fingerprint \u306e\u5148\u982d 2 \u6587\u5b57\u76ee\u79fb\u884c<\/span>\r\n\u2502\u00a0\u00a0 \u251c\u2500\u2500 00002c17915cc5.db\r\n\u2502\u00a0\u00a0 \u251c\u2500\u2500 0000b1da572e51.db\r\n\u2502\u00a0\u00a0 \u251c\u2500\u2500 ....\r\n\u2502\u00a0\u00a0 \u2514\u2500\u2500 fffffd7fd348a0.db\r\n\u251c\u2500\u2500 01\r\n\u251c\u2500\u2500 .....\r\n\u251c\u2500\u2500 ff <span class=\"c\"># 00 ~ ff \u307e\u3067\u306e\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u304c\u5fc5\u8981\u306b\u5fdc\u3058\u3066\u4f5c\u3089\u308c\u308b<\/span>\r\n\u2502\u00a0\u00a0 \u251c\u2500\u2500 ....\r\n\u2502\u00a0\u00a0 \u2514\u2500\u2500 ffff6136313c3f.db\r\n\u251c\u2500\u2500 archived_fingerprint_to_timerange <span class=\"c\"># level DB \u306e index<\/span>\r\n\u251c\u2500\u2500 archived_fingerprint_to_metric    <span class=\"c\"># level DB \u306e index<\/span>\r\n\u251c\u2500\u2500 labelname_to_labelvalues          <span class=\"c\"># level DB \u306e index<\/span>\r\n\u251c\u2500\u2500 labelpair_to_fingerprints         <span class=\"c\"># level DB \u306e index<\/span>\r\n\u2514\u2500\u2500 heads.db <span class=\"c\"># head \u30c7\u30fc\u30bf<\/span>\r\n<\/code><\/pre>\n<p>Storage v2\u5b58\u5728\u4ee5\u4e0b\u95ee\u9898\u3002<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">Time Series \u3054\u3068\u306b\u30d5\u30a1\u30a4\u30eb\u304c\u3067\u304d\u308b\u305f\u3081\u5927\u91cf\u306e\u5c0f\u3055\u3044\u30d5\u30a1\u30a4\u30eb\u304c\u3067\u304d\u308b<\/ul>\n<\/li>\n<\/ul>\n<p>inode \u306e\u9650\u754c\u306e\u554f\u984c<br \/>\nSSD \u306e Write amplification \u306b\u3088\u308b\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u4f4e\u4e0b<br \/>\nretention \u671f\u9593\u3092\u904e\u304e\u305f\u30c7\u30fc\u30bf\u306e\u524a\u9664\u306e CPU \u8ca0\u8377\u304c\u9ad8\u3044<\/p>\n<p>\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u306e\u554f\u984c<\/p>\n<p>Kubernetes \u306e\u3088\u3046\u306a\u74b0\u5883\u3067\u306f Pod \u304c\u983b\u7e41\u306b\u518d\u4f5c\u6210\u3055\u308c\u975e\u30a2\u30af\u30c6\u30a3\u30d6\u306a time series \u304c\u591a\u304f\u3067\u304d\u3066\u3057\u307e\u3046<br \/>\n\u3053\u306e\u554f\u984c\u306f Churn \u3068\u547c\u3070\u308c\u3066\u3044\u308b<br \/>\n\u53c2\u8003: https:\/\/qiita.com\/kkohtaka\/items\/7e99e9eaadbbad6cbb2b<\/p>\n<p>\u30e1\u30e2\u30ea\u7ba1\u7406\u306e\u554f\u984c<\/p>\n<p>\u30c1\u30e3\u30f3\u30af\u3092\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3068\u3057\u3066\u7ba1\u7406\u3057\u3066\u3044\u308b\u306e\u3067 GC \u306e\u3088\u3046\u306a\u51e6\u7406\u304c\u5fc5\u8981<\/p>\n<h2>\u914d\u7f6e\u6700\u65b0\u7684Prometheus\/TSDB<\/h2>\n<p>\u5728\u65b0\u7684Prometheus \/ TSDB\u4e2d\uff0c\u5f15\u5165\u4e86\u201cblock\u201d\u7684\u6982\u5ff5\uff0c\u7528\u4e8e\u5c06\u65f6\u95f4\u5e8f\u5217\u6570\u636e\u6309\u7167\u4e00\u5b9a\u7684\u65f6\u95f4\u95f4\u9694\u8fdb\u884c\u5206\u7ec4\u548c\u5904\u7406\u3002\u5728\u6bcf\u4e2ablock\u4e2d\uff0c\u6709\u4e00\u4e2a\u540d\u4e3a\u201cchunks\u201d\u7684\u76ee\u5f55\uff0c\u5176\u4e2d\u5305\u542b\u5b9e\u9645\u5b58\u50a8\u65f6\u95f4\u5e8f\u5217\u6570\u636e\u7684\u6587\u4ef6\uff08\u4f8b\u5982000001\uff09\u3002\u8fd9\u4e9b\u6587\u4ef6\u4ee5512 MB\u4e3a\u5355\u4f4d\u8fdb\u884c\u5206\u5272\u5e76\u8fdb\u884c\u7ba1\u7406\u3002<\/p>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d532f37434c4406ccee55\/14-0.png\" alt=\"undefined\" \/><\/div>\n<h3>\u963b\u6321<\/h3>\n<p>\u533a\u5757\u4ee5\u76ee\u5f55\u7684\u5f62\u5f0f\u8fdb\u884c\u7ba1\u7406\uff0c\u4fdd\u7559\u7740\u4e00\u5b9a\u65f6\u95f4\u8303\u56f4\u7684\u65f6\u95f4\u5e8f\u5217\u3002\u6bcf\u4e2a\u65f6\u95f4\u8303\u56f4\u5185\u4f1a\u751f\u6210\u591a\u4e2a\u76ee\u5f55\uff0c\u5e76\u5728\u540e\u9762\u7684\u538b\u7f29\u5904\u7406\u4e2d\u81ea\u52a8\u5730\u5c06\u5176\u5408\u5e76\u6210\u8f83\u5927\u7684\u533a\u5757\uff0c\u5728\u4e00\u5b9a\u7684\u65f6\u95f4\u5468\u671f\u5185\u3002\u7531\u4e8e\u6bcf\u4e2a\u533a\u5757\u90fd\u5177\u6709\u7d22\u5f15\u548c\u5143\u6570\u636e\uff0c\u56e0\u6b64\u53ef\u4ee5\u5c06\u6bcf\u4e2a\u533a\u5757\u89c6\u4e3a\u4e00\u4e2a\u5c0f\u578b\u6570\u636e\u5e93\u3002\u76ee\u5f55\u540d\u79f0\u91c7\u7528\u4e86\u53ef\u6392\u5e8f\u7684 ULID\uff08Universally Unique Lexicographically Sortable Identifier\uff09\u4f5c\u4e3a\u552f\u4e00\u6807\u8bc6\u7b26\u3002\u8be5\u533a\u5757\u7531\u4ee5\u4e0b\u6587\u4ef6\u7ec4\u6210\u3002<\/p>\n<div>\n<div class=\"post-table\">\u30d5\u30a1\u30a4\u30eb\u7528\u9014chunks\/Time Series \u304c\u4fdd\u5b58\u3055\u308c\u3066\u3044\u308b\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u3002512 MB \u3054\u3068\u306b\u5206\u5272\u3002\u53c2\u8003: <a href=\"https:\/\/github.com\/prometheus\/tsdb\/blob\/master\/Documentation\/format\/chunks.md\" target=\"_blank\" rel=\"nofollow noopener\">Chunks Disk Format<\/a>index\u30e9\u30d9\u30eb\u3068 Time Series \u306e\u8ee2\u7f6e\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u3002\u53c2\u8003: <a href=\"https:\/\/github.com\/prometheus\/tsdb\/blob\/master\/Documentation\/format\/index.md\" target=\"_blank\" rel=\"nofollow noopener\">Index Disk Format<\/a>meta.json\u30e1\u30bf\u30c7\u30fc\u30bf\u3002\u30d6\u30ed\u30c3\u30af\u306e\u4fdd\u6301\u30c7\u30fc\u30bf\u306e\u958b\u59cb\u6642\u9593\u3001\u7d42\u4e86\u6642\u9593\u306a\u3069\u304c\u8a18\u9332\u3055\u308c\u3066\u3044\u308b\u3002tombstones\u524a\u9664\u6e08\u307f\u30c7\u30fc\u30bf\u306e\u60c5\u5831\u3002\u53c2\u8003: <a href=\"https:\/\/github.com\/prometheus\/tsdb\/blob\/master\/Documentation\/format\/tombstones.md\" target=\"_blank\" rel=\"nofollow noopener\">Tombstones Disk Format<\/a><\/div>\n<\/div>\n<pre class=\"post-pre\"><code><span class=\"p\">{<\/span>\r\n    <span class=\"nl\">\"version\"<\/span><span class=\"p\">:<\/span> <span class=\"mi\">1<\/span><span class=\"p\">,<\/span>\r\n    <span class=\"nl\">\"ulid\"<\/span><span class=\"p\">:<\/span> <span class=\"s2\">\"01BZ033BRP0EQBFW51QKD1TT9Y\"<\/span><span class=\"p\">,<\/span>\r\n    <span class=\"nl\">\"minTime\"<\/span><span class=\"p\">:<\/span> <span class=\"mi\">1510718400000<\/span><span class=\"p\">,<\/span> <span class=\"err\">#<\/span> <span class=\"err\">\u4fdd\u6301\u30c7\u30fc\u30bf\u306e\u958b\u59cb\u6642\u9593<\/span>\r\n    <span class=\"nl\">\"maxTime\"<\/span><span class=\"p\">:<\/span> <span class=\"mi\">1510747200000<\/span><span class=\"p\">,<\/span> <span class=\"err\">#<\/span> <span class=\"err\">\u4fdd\u6301\u30c7\u30fc\u30bf\u306e\u7d42\u4e86\u6642\u9593<\/span>\r\n    <span class=\"nl\">\"stats\"<\/span><span class=\"p\">:<\/span> <span class=\"p\">{<\/span>\r\n        <span class=\"nl\">\"numSamples\"<\/span><span class=\"p\">:<\/span> <span class=\"mi\">21396291<\/span><span class=\"p\">,<\/span>\r\n        <span class=\"nl\">\"numSeries\"<\/span><span class=\"p\">:<\/span> <span class=\"mi\">176339<\/span><span class=\"p\">,<\/span>\r\n        <span class=\"nl\">\"numChunks\"<\/span><span class=\"p\">:<\/span> <span class=\"mi\">325936<\/span>\r\n    <span class=\"p\">},<\/span>\r\n    <span class=\"nl\">\"compaction\"<\/span><span class=\"p\">:<\/span> <span class=\"p\">{<\/span>\r\n        <span class=\"nl\">\"level\"<\/span><span class=\"p\">:<\/span> <span class=\"mi\">3<\/span><span class=\"p\">,<\/span> <span class=\"err\">#<\/span> <span class=\"err\">\u30b3\u30f3\u30d1\u30af\u30b7\u30e7\u30f3\u306e\u30ec\u30d9\u30eb<\/span>\r\n        <span class=\"nl\">\"sources\"<\/span><span class=\"p\">:<\/span> <span class=\"p\">[<\/span> <span class=\"err\">#<\/span> <span class=\"err\">\u30b3\u30f3\u30d1\u30af\u30b7\u30e7\u30f3\u3057\u305f\u5143\u306e\u30c7\u30a3\u30ec\u30af\u30c8\u30ea<\/span>\r\n            <span class=\"s2\">\"01BYZ7MCSVJHG5D17M4YZF0JD1\"<\/span><span class=\"p\">,<\/span>\r\n            <span class=\"s2\">\"01BYZEG4434G74SCPWJGQ2TDEQ\"<\/span><span class=\"p\">,<\/span>\r\n            <span class=\"s2\">\"01BYZNBVBAJ34NWT3CWRFNB43Z\"<\/span><span class=\"p\">,<\/span>\r\n            <span class=\"s2\">\"01BYZW7JJ2YQVKM1WX08FDQ7ZN\"<\/span>\r\n        <span class=\"p\">]<\/span>\r\n    <span class=\"p\">}<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<h3>\u9884\u5199\u65e5\u5fd7 (Write Ahead Log)<\/h3>\n<p>\u4ec5\u5199\u5165\u6700\u65b0\u6570\u636e\uff0c\u56e0\u6b64\u4f5c\u4e3a\u9996\u8981\u5904\u7406\uff0c\u5e76\u5b9a\u671f\u5728Write Ahead Log\uff08WAL\uff09\u76ee\u5f55\u4e2d\u6301\u4e45\u5316\u5b58\u50a8\u3002<\/p>\n<p>\u7ecf\u8fc7\u4e00\u6bb5\u65f6\u95f4\uff08\u57282.0.0\u65f6\u70b9\u7684\u5b9e\u73b0\u4e2d\u4e3a3\u4e2a\u5c0f\u65f6\uff09\uff0c\u5b83\u5c06\u8f6c\u53d8\u4e3ablock\u72b6\u6001\u3002<\/p>\n<h2>\u4f7f\u7528mmap\u8fdb\u884c\u7f13\u5b58\u7ba1\u7406<\/h2>\n<p>\u65b0\u7684TSDB\u4f7f\u7528mmap\u7cfb\u7edf\u8c03\u7528\u5c06\u65f6\u95f4\u5e8f\u5217\u7684\u6570\u636e\u6587\u4ef6\u6620\u5c04\u5230\u5185\u5b58\u4e2d\u7684\u5b57\u8282\u5207\u7247\u3002\u7531\u4e8e\u4f7f\u7528mmap\u8fdb\u884c\u6620\u5c04\uff0c\u6587\u4ef6\u7f13\u5b58\u7ba1\u7406\u5c06\u901a\u8fc7\u5185\u6838\u900f\u660e\u5904\u7406\u3002\u7531\u4e8e\u5185\u6838\u4f1a\u6839\u636e\u9700\u8981\u91ca\u653e\u7f13\u5b58\uff0c\u56e0\u6b64prometheus\u4e0d\u518d\u9700\u8981\u5360\u7528\u5185\u5b58\u6765\u8fdb\u884c\u7f13\u5b58\u7ba1\u7406\uff0c\u800c\u4e0d\u518d\u9700\u8981\u901a\u8fc7storage.local.target-heap-size\u8fdb\u884c\u5185\u5b58\u5927\u5c0f\u8c03\u4f18\u3002<\/p>\n<p>\u7d22\u5f15\u662f\u6807\u7b7e\u548c\u5757\u5f15\u7528\u7684\u8f6c\u7f6e\u7d22\u5f15\uff0c\u5176\u4e2d\u5757\u5f15\u7528\u7531\u6587\u4ef6\u504f\u79fb\u91cf\uff0832\u4f4d\uff09+\u5e8f\u5217\uff0832\u4f4d\uff09\u6784\u6210\uff0c\u4ee5\u4fbf\u76f4\u63a5\u4ece\u5185\u5b58\u4e2d\u8bbf\u95ee\u3002<\/p>\n<p>\u53c2\u8003\uff1aChunk \u7684\u683c\u5f0f<\/p>\n<pre class=\"post-pre\"><code>\u250c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u252c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2510\r\n\u2502 magic(0x85BD40DD) &lt;4 byte&gt;             \u2502 version(1) &lt;1 byte&gt;  \u2502\r\n\u251c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2534\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2524\r\n\u2502 \u250c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u252c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u252c\u2500\u2500\u2500\u2500\u2500\u2500\u252c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2510 \u2502\r\n\u2502 \u2502 len &lt;uvarint&gt; \u2502 encoding &lt;1 byte&gt; \u2502 data \u2502 CRC32 &lt;4 byte&gt; \u2502 \u2502\r\n\u2502 \u2514\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2534\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2534\u2500\u2500\u2500\u2500\u2500\u2500\u2534\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2518 \u2502\r\n\u2514\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2518\r\n<\/code><\/pre>\n<p>\u4ee5\u4e0b\u662f\u5c06 Prometheus v1.6.3 \u548c v2.0.0 \u5728 24 \u5c0f\u65f6\u5185\u4f7f\u7528\u7684 CPU \u548c\u5185\u5b58\uff08RSS\uff09\u8fdb\u884c\u6bd4\u8f83\u7684\u7ed3\u679c\u3002\u5b83\u4eec\u90fd\u5728 Kubernetes \u4e0a\u8fd0\u884c\uff0c\u5e76\u4e14\u914d\u7f6e\u5982\u76ee\u6807\u7b49\u5747\u76f8\u540c\u3002\u4e24\u8005\u7684\u6027\u80fd\u90fd\u6709\u5927\u5e45\u63d0\u5347\u3002\u7531\u4e8ev1.6.3\u4f7f\u7528\u5806\u5185\u5b58\u7ba1\u7406\u7f13\u5b58\uff0c\u5bfc\u81f4\u5185\u5b58\u4f7f\u7528\u91cf\uff08RSS\uff09\u9010\u6e10\u589e\u52a0\uff0c\u800cv2.0.0\u7531\u4e8e\u4f7f\u7528mmap\u7531\u5185\u6838\u8fdb\u884c\u7ba1\u7406\uff0c\u56e0\u6b64\u53ef\u4ee5\u770b\u51fa\u5185\u5b58\u5927\u5c0f\u57fa\u672c\u4fdd\u6301\u4e0d\u53d8\u3002<\/p>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d532f37434c4406ccee55\/28-0.png\" alt=\"image.png\" \/><\/div>\n<h2>\u6570\u636e\u538b\u7f29<\/h2>\n<p>\u4e3a\u4e86\u63d0\u9ad8\u67e5\u8be2\u7684\u6548\u7387\uff0c\u6570\u636e\u5757\u5728\u4e00\u5b9a\u65f6\u95f4\u95f4\u9694\u5185\u901a\u8fc7\u538b\u7f29\u5904\u7406\u5e76\u5408\u5e76\u6210\u8f83\u5927\u7684\u5757\u3002\u538b\u7f29\u7ea7\u522b\u88ab\u4f5c\u4e3aTSDB\u7684\u9009\u9879\u4ee5\u6570\u7ec4\u5f62\u5f0f\u4f20\u9012\uff0c\u5e76\u4e14\u5728Prometheus 2.0.0\u7684\u5b9e\u73b0\u4e2d\uff0c\u9ed8\u8ba4\u4e3a\u6bcf2\u5c0f\u65f6\u589e\u52a03\u500d\u3002\u8fd9\u4e2a\u521d\u59cb\u503c\uff082\u5c0f\u65f6\uff09\u53ef\u4ee5\u901a\u8fc7&#8211;storage.tsdb.max-block-duration\u6765\u6307\u5b9a\u3002\u6700\u5927\u65f6\u95f4\u9ed8\u8ba4\u4e3a\u4fdd\u7559\u671f\u768410%\uff0c\u53ef\u4ee5\u901a\u8fc7&#8211;storage.tsdb.max-block-duration\u6765\u6307\u5b9a\u3002<\/p>\n<pre class=\"post-pre\"><code># 3 \u500d\u305a\u3064 10 \u6bb5\u968e\u5897\u3048\u3066\u3044\u304f\r\nrngs := tsdb.ExponentialBlockRanges(int64(time.Duration(opts.MinBlockDuration).Seconds()*1000), 10, 3)\r\n\r\n# \u79d2\u5358\u4f4d\u306e\u7d50\u679c\r\n[7200000 21600000 64800000 194400000 583200000 1749600000 5248800000 15746400000 47239200000 141717600000]\r\n\r\n# \u6642\u9593\u306b\u76f4\u3057\u305f\u3082\u306e\r\n[2h, 6h, 18h, 2d6h, 6d18h 20d6h, 60d18h, 182d6h, 546d18h, 1640d6h]\r\n<\/code><\/pre>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d532f37434c4406ccee55\/32-0.png\" alt=\"undefined\" \/><\/div>\n<p>\u5728\u56fe\u4e2d\uff0c\u5904\u7406\u4f1a\u50cf\u4e0a\u8ff0\u63cf\u8ff0\u7684\u90a3\u6837\u8fdb\u884c\u3002\u5728\u538b\u7f29\u7684\u4e0b\u4e00\u4e2a\u7ea7\u522b\u7684\u65f6\u95f4\u6bb5\uff082\u5c0f\u65f6\u30016\u5c0f\u65f6\u300118\u5c0f\u65f6\uff0c\u5448\u6307\u6570\u589e\u957f\uff09\u5185\uff0c\u5c06\u5757\u5206\u7ec4\u5e76\u8fdb\u884c\u538b\u7f29\u3002<\/p>\n<p>\u5728 Prometheus 2.0.0 \u7248\u672c\u4e2d\uff0c\u5f53\u8fdb\u884c\u538b\u7f29\u65f6\uff0c\u4f1a\u5148\u5bf9\u65f6\u95f4\u7a97\u53e3\u8fdb\u884c\u5bf9\u9f50\uff0c\u5e76\u5c06\u8fd9\u4e2a\u65f6\u95f4\u7a97\u53e3\u8fdb\u884c\u5206\u7ec4\u3002\u56e0\u6b64\u4e0d\u4ec5\u4ec5\u662f\u7b80\u5355\u5730\u5c06 2 \u5c0f\u65f6 * 3 \u5757\u538b\u7f29\u4e3a 6 \u5c0f\u65f6\uff0c\u8fd8\u53ef\u80fd\u5b58\u5728\u591a\u79cd\u7ec4\u5408\u7684\u5206\u7ec4\u65b9\u5f0f\u3002\u6839\u636e\u538b\u7f29\u5904\u7406\u7684\u6d4b\u8bd5\u4ee3\u7801 compact_test.go\uff0c\u7f16\u5199\u6d4b\u8bd5\u6848\u4f8b\u5982\u4e0b\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"n\">compactor<\/span><span class=\"p\">,<\/span> <span class=\"n\">err<\/span> <span class=\"o\">:=<\/span> <span class=\"n\">NewLeveledCompactor<\/span><span class=\"p\">(<\/span><span class=\"no\">nil<\/span><span class=\"p\">,<\/span> <span class=\"no\">nil<\/span><span class=\"p\">,<\/span> <span class=\"p\">[]<\/span><span class=\"kt\">int64<\/span><span class=\"p\">{<\/span>\r\n    <span class=\"m\">7200000<\/span><span class=\"p\">,<\/span>  <span class=\"c\">\/\/ \u30c7\u30d5\u30a9\u30eb\u30c8\u306e\u6642\u9593\u67a0\u306e\u30d6\u30ed\u30c3\u30af\u3092 3 \u30ec\u30d9\u30eb\u5206\u3092\u8a2d\u5b9a<\/span>\r\n    <span class=\"m\">21600000<\/span><span class=\"p\">,<\/span>\r\n    <span class=\"m\">64800000<\/span><span class=\"p\">,<\/span>\r\n<span class=\"p\">},<\/span> <span class=\"no\">nil<\/span><span class=\"p\">)<\/span>\r\n\r\n<span class=\"c\">\/\/ \u4e2d\u7565<\/span>\r\n\r\n<span class=\"p\">{<\/span>\r\n    <span class=\"n\">metas<\/span><span class=\"o\">:<\/span> <span class=\"p\">[]<\/span><span class=\"n\">dirMeta<\/span><span class=\"p\">{<\/span> <span class=\"c\">\/\/ \u30d6\u30ed\u30c3\u30af\u306e\u30e1\u30bf\u60c5\u5831\u306e\u914d\u5217<\/span>\r\n        <span class=\"c\">\/\/             \u958b\u59cb\u6642\u9593        \u7d42\u4e86\u6642\u9593 (2\u6642\u9593\u5f8c)<\/span>\r\n        <span class=\"n\">metaRange<\/span><span class=\"p\">(<\/span><span class=\"s\">\"1\"<\/span><span class=\"p\">,<\/span> <span class=\"m\">1510704000000<\/span><span class=\"p\">,<\/span> <span class=\"m\">1510711200000<\/span><span class=\"p\">,<\/span> <span class=\"no\">nil<\/span><span class=\"p\">),<\/span> <span class=\"c\">\/\/ \u958b\u59cb\u6642\u9593\u304c\u6642\u9593\u67a0 21600000 (6h) \u306e\u500d\u6570<\/span>\r\n        <span class=\"n\">metaRange<\/span><span class=\"p\">(<\/span><span class=\"s\">\"2\"<\/span><span class=\"p\">,<\/span> <span class=\"m\">1510711200000<\/span><span class=\"p\">,<\/span> <span class=\"m\">1510718400000<\/span><span class=\"p\">,<\/span> <span class=\"no\">nil<\/span><span class=\"p\">),<\/span>\r\n        <span class=\"n\">metaRange<\/span><span class=\"p\">(<\/span><span class=\"s\">\"3\"<\/span><span class=\"p\">,<\/span> <span class=\"m\">1510718400000<\/span><span class=\"p\">,<\/span> <span class=\"m\">1510725600000<\/span><span class=\"p\">,<\/span> <span class=\"no\">nil<\/span><span class=\"p\">),<\/span>\r\n        <span class=\"n\">metaRange<\/span><span class=\"p\">(<\/span><span class=\"s\">\"4\"<\/span><span class=\"p\">,<\/span> <span class=\"m\">1510725600000<\/span><span class=\"p\">,<\/span> <span class=\"m\">1510732800000<\/span><span class=\"p\">,<\/span> <span class=\"no\">nil<\/span><span class=\"p\">),<\/span>\r\n    <span class=\"p\">},<\/span>\r\n    <span class=\"c\">\/\/ \u30b3\u30f3\u30d1\u30af\u30c8\u5316\u3055\u308c\u308b\u7d50\u679c<\/span>\r\n    <span class=\"n\">expected<\/span><span class=\"o\">:<\/span> <span class=\"p\">[]<\/span><span class=\"kt\">string<\/span><span class=\"p\">{<\/span><span class=\"s\">\"1\"<\/span><span class=\"p\">,<\/span> <span class=\"s\">\"2\"<\/span><span class=\"p\">,<\/span> <span class=\"s\">\"3\"<\/span><span class=\"p\">},<\/span> <span class=\"c\">\/\/ \u6642\u9593\u67a0\u306e\u500d\u6570\u30d4\u30c3\u30bf\u30ea\u306e\u5834\u5408\u3060\u3051 1, 2, 3 \u304c\u30b3\u30f3\u30d1\u30af\u30c8\u5316\u3055\u308c\u308b\u3002<\/span>\r\n<span class=\"p\">},<\/span>\r\n<span class=\"p\">{<\/span>\r\n    <span class=\"n\">metas<\/span><span class=\"o\">:<\/span> <span class=\"p\">[]<\/span><span class=\"n\">dirMeta<\/span><span class=\"p\">{<\/span>\r\n        <span class=\"n\">metaRange<\/span><span class=\"p\">(<\/span><span class=\"s\">\"1\"<\/span><span class=\"p\">,<\/span> <span class=\"m\">1510704000001<\/span><span class=\"p\">,<\/span> <span class=\"m\">1510711200001<\/span><span class=\"p\">,<\/span> <span class=\"no\">nil<\/span><span class=\"p\">),<\/span> <span class=\"c\">\/\/ \u6642\u9593\u67a0 21600000 \u306e\u500d\u6570\u3092\u8d85\u3048\u3066\u3044\u308b\u5834\u5408<\/span>\r\n        <span class=\"n\">metaRange<\/span><span class=\"p\">(<\/span><span class=\"s\">\"2\"<\/span><span class=\"p\">,<\/span> <span class=\"m\">1510711200001<\/span><span class=\"p\">,<\/span> <span class=\"m\">1510718400001<\/span><span class=\"p\">,<\/span> <span class=\"no\">nil<\/span><span class=\"p\">),<\/span>\r\n        <span class=\"n\">metaRange<\/span><span class=\"p\">(<\/span><span class=\"s\">\"3\"<\/span><span class=\"p\">,<\/span> <span class=\"m\">1510718400001<\/span><span class=\"p\">,<\/span> <span class=\"m\">1510725600001<\/span><span class=\"p\">,<\/span> <span class=\"no\">nil<\/span><span class=\"p\">),<\/span>\r\n        <span class=\"n\">metaRange<\/span><span class=\"p\">(<\/span><span class=\"s\">\"4\"<\/span><span class=\"p\">,<\/span> <span class=\"m\">1510725600001<\/span><span class=\"p\">,<\/span> <span class=\"m\">1510732800001<\/span><span class=\"p\">,<\/span> <span class=\"no\">nil<\/span><span class=\"p\">),<\/span>\r\n    <span class=\"p\">},<\/span>\r\n    <span class=\"n\">expected<\/span><span class=\"o\">:<\/span> <span class=\"p\">[]<\/span><span class=\"kt\">string<\/span><span class=\"p\">{<\/span><span class=\"s\">\"1\"<\/span><span class=\"p\">,<\/span> <span class=\"s\">\"2\"<\/span><span class=\"p\">},<\/span> <span class=\"c\">\/\/ 3 \u306f\u6642\u9593\u67a0\u3092\u306f\u307f\u51fa\u3059\u305f\u3081\u30011, 2 \u3060\u3051\u304c\u30b3\u30f3\u30d1\u30af\u30c8\u5316\u3055\u308c\u308b\u3002<\/span>\r\n<span class=\"p\">},<\/span>\r\n<span class=\"p\">{<\/span>\r\n    <span class=\"n\">metas<\/span><span class=\"o\">:<\/span> <span class=\"p\">[]<\/span><span class=\"n\">dirMeta<\/span><span class=\"p\">{<\/span>\r\n        <span class=\"n\">metaRange<\/span><span class=\"p\">(<\/span><span class=\"s\">\"1\"<\/span><span class=\"p\">,<\/span> <span class=\"m\">1510703999999<\/span><span class=\"p\">,<\/span> <span class=\"m\">1510711199999<\/span><span class=\"p\">,<\/span> <span class=\"no\">nil<\/span><span class=\"p\">),<\/span> <span class=\"c\">\/\/ \u6642\u9593\u67a0 21600000 \u306e\u500d\u6570\u3092\u4e0b\u56de\u308b\u5834\u5408<\/span>\r\n        <span class=\"n\">metaRange<\/span><span class=\"p\">(<\/span><span class=\"s\">\"2\"<\/span><span class=\"p\">,<\/span> <span class=\"m\">1510711199999<\/span><span class=\"p\">,<\/span> <span class=\"m\">1510718399999<\/span><span class=\"p\">,<\/span> <span class=\"no\">nil<\/span><span class=\"p\">),<\/span>\r\n        <span class=\"n\">metaRange<\/span><span class=\"p\">(<\/span><span class=\"s\">\"3\"<\/span><span class=\"p\">,<\/span> <span class=\"m\">1510718399999<\/span><span class=\"p\">,<\/span> <span class=\"m\">1510725599999<\/span><span class=\"p\">,<\/span> <span class=\"no\">nil<\/span><span class=\"p\">),<\/span>\r\n        <span class=\"n\">metaRange<\/span><span class=\"p\">(<\/span><span class=\"s\">\"4\"<\/span><span class=\"p\">,<\/span> <span class=\"m\">1510725599999<\/span><span class=\"p\">,<\/span> <span class=\"m\">1510732799999<\/span><span class=\"p\">,<\/span> <span class=\"no\">nil<\/span><span class=\"p\">),<\/span>\r\n    <span class=\"p\">},<\/span>\r\n    <span class=\"n\">expected<\/span><span class=\"o\">:<\/span> <span class=\"p\">[]<\/span><span class=\"kt\">string<\/span><span class=\"p\">{<\/span><span class=\"s\">\"2\"<\/span><span class=\"p\">,<\/span> <span class=\"s\">\"3\"<\/span><span class=\"p\">},<\/span> <span class=\"c\">\/\/ 1 \u304c\u6642\u9593\u67a0\u3067\u9023\u7d9a\u3057\u306a\u3044\u305f\u3081\u30012, 3 \u304c\u30b3\u30f3\u30d1\u30af\u30c8\u5316\u3055\u308c\u308b<\/span>\r\n<span class=\"p\">},<\/span>\r\n\r\n<span class=\"p\">{<\/span>\r\n    <span class=\"n\">metas<\/span><span class=\"o\">:<\/span> <span class=\"p\">[]<\/span><span class=\"n\">dirMeta<\/span><span class=\"p\">{<\/span>\r\n        <span class=\"n\">metaRange<\/span><span class=\"p\">(<\/span><span class=\"s\">\"1\"<\/span><span class=\"p\">,<\/span> <span class=\"m\">1510718400000<\/span><span class=\"p\">,<\/span> <span class=\"m\">1510725600000<\/span><span class=\"p\">,<\/span> <span class=\"no\">nil<\/span><span class=\"p\">),<\/span> <span class=\"c\">\/\/ \u958b\u59cb\u6642\u9593\u304c\u6642\u9593\u67a0\u306e\u500d\u6570\u3067\u306a\u3044<\/span>\r\n        <span class=\"n\">metaRange<\/span><span class=\"p\">(<\/span><span class=\"s\">\"2\"<\/span><span class=\"p\">,<\/span> <span class=\"m\">1510725600000<\/span><span class=\"p\">,<\/span> <span class=\"m\">1510732800000<\/span><span class=\"p\">,<\/span> <span class=\"no\">nil<\/span><span class=\"p\">),<\/span>\r\n        <span class=\"n\">metaRange<\/span><span class=\"p\">(<\/span><span class=\"s\">\"3\"<\/span><span class=\"p\">,<\/span> <span class=\"m\">1510732800000<\/span><span class=\"p\">,<\/span> <span class=\"m\">1510740000000<\/span><span class=\"p\">,<\/span> <span class=\"no\">nil<\/span><span class=\"p\">),<\/span>\r\n        <span class=\"n\">metaRange<\/span><span class=\"p\">(<\/span><span class=\"s\">\"4\"<\/span><span class=\"p\">,<\/span> <span class=\"m\">1510740000000<\/span><span class=\"p\">,<\/span> <span class=\"m\">1510747200000<\/span><span class=\"p\">,<\/span> <span class=\"no\">nil<\/span><span class=\"p\">),<\/span>\r\n    <span class=\"p\">},<\/span>\r\n    <span class=\"n\">expected<\/span><span class=\"o\">:<\/span> <span class=\"p\">[]<\/span><span class=\"kt\">string<\/span><span class=\"p\">{<\/span><span class=\"s\">\"2\"<\/span><span class=\"p\">,<\/span> <span class=\"s\">\"3\"<\/span><span class=\"p\">,<\/span> <span class=\"s\">\"4\"<\/span><span class=\"p\">},<\/span>  <span class=\"c\">\/\/ \u30a2\u30e9\u30a4\u30f3\u306e\u95a2\u4fc2\u3067 1 \u306f\u30b3\u30f3\u30d1\u30af\u30c8\u5316\u3055\u308c\u306a\u3044<\/span>\r\n<span class=\"p\">},<\/span>\r\n<\/code><\/pre>\n<h2>\u8bf7\u53c2\u8003<\/h2>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">https:\/\/fabxc.org\/blog\/2017-04-10-writing-a-tsdb\/<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">https:\/\/github.com\/prometheus\/tsdb\/tree\/master\/Documentation\/format<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">https:\/\/www.percona.com\/live\/e17\/sites\/default\/files\/slides\/Evolution%20of%20the%20Prometheus%20TSDB%20-%20FileId%20-%20115511.pdf<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>\u6211\u5c06\u89e3\u91caPrometheus 2.0\u6700\u5f15\u4eba\u6ce8\u76ee\u7684\u4fee\u6539\u2014\u2014\u91cd\u5199\u4e86\u5b58\u50a8prometheus\/tsdb\u7684\u7ed3\u6784\uff0c\u8bf4\u660e\u4e86 [&hellip;]<\/p>\n","protected":false},"author":5,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-43512","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - 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