{"id":31134,"date":"2026-06-12T14:00:00","date_gmt":"2026-06-12T06:00:00","guid":{"rendered":"https:\/\/cn.hostease.com\/blog\/?p=31134"},"modified":"2026-07-25T16:28:58","modified_gmt":"2026-07-25T08:28:58","slug":"postgresql-performance-tuning-guide","status":"publish","type":"post","link":"https:\/\/cn.hostease.com\/blog\/guides\/postgresql-performance-tuning-guide\/","title":{"rendered":"PostgreSQL \u6027\u80fd\u57fa\u7ebf\u89c4\u5212\uff1a\u4ece\u8d44\u6e90\u5bb9\u91cf\u5230\u7a33\u5b9a\u8fd0\u884c"},"content":{"rendered":"<p><img decoding=\"async\" src=\"https:\/\/cn.hostease.com\/blog\/wp-content\/uploads\/2026\/06\/31134_postgresql-performance-tuning-guide-cover.webp\" alt=\"PostgreSQL \u6027\u80fd\u57fa\u7ebf\u89c4\u5212\" loading=\"lazy\" \/><\/p>\n<h2>\u4e3a\u4ec0\u4e48\u8981\u5148\u5efa\u7acb\u6027\u80fd\u57fa\u7ebf<\/h2>\n<p>\u5982\u4f55\u8ba9 PostgreSQL \u6570\u636e\u5e93\u957f\u671f\u7a33\u5b9a\uff0c\u800c\u4e0d\u662f\u6bcf\u6b21\u53d8\u6162\u540e\u624d\u4e34\u65f6\u6392\u969c\uff1f\u5f88\u591a\u56e2\u961f\u4f1a\u628a\u6027\u80fd\u95ee\u9898\u7406\u89e3\u6210\u201c\u52a0\u7d22\u5f15\u3001\u6269\u5185\u5b58\u3001\u8c03\u53c2\u6570\u201d\uff0c\u4f46\u751f\u4ea7\u73af\u5883\u771f\u6b63\u9700\u8981\u7684\u662f\u4e00\u5957\u53ef\u590d\u67e5\u7684\u6027\u80fd\u57fa\u7ebf\u3002\u57fa\u7ebf\u7684\u4f5c\u7528\u4e0d\u662f\u8ffd\u6c42\u67d0\u4e2a\u6781\u9650\u8dd1\u5206\uff0c\u800c\u662f\u56de\u7b54\u4e09\u4e2a\u95ee\u9898\uff1a\u5f53\u524d\u8d44\u6e90\u8fd8\u80fd\u652f\u6491\u591a\u5c11\u4e1a\u52a1\u589e\u957f\uff0c\u54ea\u4e9b\u6307\u6807\u5df2\u7ecf\u63a5\u8fd1\u98ce\u9669\u533a\u95f4\uff0c\u4e0b\u4e00\u6b21\u6269\u5bb9\u6216\u8fc1\u79fb\u5e94\u8be5\u63d0\u524d\u591a\u4e45\u51c6\u5907\u3002\u672c\u6587\u4f1a\u628a\u91cd\u70b9\u653e\u5728\u5bb9\u91cf\u89c4\u5212\u3001\u8d44\u6e90\u8fb9\u754c\u548c\u65e5\u5e38\u76d1\u63a7\uff0c\u5e2e\u52a9\u4f60\u628a PostgreSQL \u6027\u80fd\u8c03\u4f18\u4ece\u4e00\u6b21\u6027\u64cd\u4f5c\u53d8\u6210\u6301\u7eed\u7ba1\u7406\u3002<\/p>\n<p>\u8fd9\u7bc7\u6587\u7ae0\u4e0e\u6162\u67e5\u8be2\u6392\u969c\u6d41\u7a0b\u4e0d\u540c\u3002\u6162\u67e5\u8be2\u6392\u969c\u901a\u5e38\u4ece\u67d0\u6761 SQL \u5165\u624b\uff0c\u5173\u6ce8\u6267\u884c\u8ba1\u5212\u3001\u7d22\u5f15\u547d\u4e2d\u548c\u5355\u6b21\u8bf7\u6c42\u8017\u65f6\uff1b\u6027\u80fd\u57fa\u7ebf\u89c4\u5212\u5219\u4ece\u6574\u4e2a\u6570\u636e\u5e93\u5b9e\u4f8b\u5165\u624b\uff0c\u5173\u6ce8\u8fde\u63a5\u89c4\u6a21\u3001\u70ed\u6570\u636e\u96c6\u3001\u7f13\u5b58\u547d\u4e2d\u7387\u3001\u78c1\u76d8\u5ef6\u8fdf\u548c\u4e1a\u52a1\u9ad8\u5cf0\u3002\u4e24\u8005\u90fd\u91cd\u8981\uff0c\u4f46\u76ee\u6807\u4e0d\u540c\uff1a\u524d\u8005\u89e3\u51b3\u5df2\u7ecf\u66b4\u9732\u7684\u95ee\u9898\uff0c\u540e\u8005\u51cf\u5c11\u95ee\u9898\u96c6\u4e2d\u7206\u53d1\u7684\u6982\u7387\u3002<\/p>\n<h2>\u5148\u628a\u4e1a\u52a1\u8d1f\u8f7d\u62c6\u6210\u53ef\u91cf\u5316\u753b\u50cf<\/h2>\n<p>\u6027\u80fd\u57fa\u7ebf\u7684\u7b2c\u4e00\u6b65\uff0c\u662f\u628a\u201c\u6570\u636e\u5e93\u538b\u529b\u5927\u201d\u62c6\u6210\u5177\u4f53\u753b\u50cf\u3002\u5efa\u8bae\u81f3\u5c11\u8bb0\u5f55\u56db\u7c7b\u6570\u636e\uff1a\u6bcf\u5206\u949f\u67e5\u8be2\u6570\u3001\u5199\u5165\u4e8b\u52a1\u6570\u3001\u6d3b\u8dc3\u8fde\u63a5\u6570\u548c\u6838\u5fc3\u8868\u7684\u6570\u636e\u589e\u957f\u901f\u5ea6\u3002\u6bd4\u5982\u4e00\u4e2a\u8ba2\u5355\u7cfb\u7edf\u5f53\u524d\u6bcf\u5206\u949f 1800 \u6b21\u8bfb\u67e5\u8be2\u3001260 \u6b21\u5199\u5165\u4e8b\u52a1\uff0c\u8ba2\u5355\u8868\u6bcf\u5929\u65b0\u589e 80 \u4e07\u884c\uff0c\u6d3b\u8dc3\u8fde\u63a5\u5728\u5348\u95f4\u9ad8\u5cf0\u8fbe\u5230 120 \u4e2a\uff1b\u8fd9\u4e9b\u6570\u5b57\u6bd4\u201c\u8bbf\u95ee\u91cf\u53d8\u5927\u4e86\u201d\u66f4\u9002\u5408\u7528\u4e8e\u89c4\u5212\u3002<\/p>\n<p>\u53ef\u4ee5\u5148\u7528 PostgreSQL\uff08\u4e00\u79cd\u5f00\u6e90\u5173\u7cfb\u578b\u6570\u636e\u5e93\uff09\u5185\u7f6e\u89c6\u56fe\u6536\u96c6\u8fde\u63a5\u548c\u4e8b\u52a1\u8d8b\u52bf\uff1a<\/p>\n<pre><code class=\"language-sql\">SELECT datname,\n       numbackends,\n       xact_commit,\n       xact_rollback,\n       blks_read,\n       blks_hit\nFROM pg_stat_database\nWHERE datname = current_database();\n<\/code><\/pre>\n<p>\u5982\u679c\u5df2\u7ecf\u542f\u7528 <code>pg_stat_statements<\/code>\uff0c\u8fd8\u5e94\u628a\u603b\u8017\u65f6\u6700\u9ad8\u7684\u524d 20 \u6761 SQL \u7eb3\u5165\u753b\u50cf\u3002\u8fd9\u91cc\u4e0d\u6025\u7740\u6539 SQL\uff0c\u800c\u662f\u5148\u5224\u65ad\u8d1f\u8f7d\u7c7b\u578b\uff1a\u8bfb\u591a\u5199\u5c11\u3001\u5199\u5165\u5bc6\u96c6\u3001\u62a5\u8868\u5206\u6790\u578b\uff0c\u8fd8\u662f\u9ad8\u5e76\u53d1\u77ed\u4e8b\u52a1\u3002\u4e0d\u540c\u753b\u50cf\u5bf9\u5e94\u7684\u8d44\u6e90\u74f6\u9888\u4e0d\u540c\uff0c\u8bfb\u591a\u5199\u5c11\u66f4\u5bb9\u6613\u53d7\u7f13\u5b58\u547d\u4e2d\u7387\u5f71\u54cd\uff0c\u5199\u5165\u5bc6\u96c6\u66f4\u4f9d\u8d56 WAL\uff08\u9884\u5199\u5f0f\u65e5\u5fd7\uff0c\u5373 Write-Ahead Logging\uff0c\u6570\u636e\u5e93\u7528\u4e8e\u4fdd\u8bc1\u6301\u4e45\u6027\u7684\u65e5\u5fd7\u673a\u5236\uff09\u5237\u76d8\u80fd\u529b\uff0c\u9ad8\u5e76\u53d1\u77ed\u4e8b\u52a1\u5219\u8981\u91cd\u70b9\u770b\u8fde\u63a5\u6c60\u548c\u4e0a\u4e0b\u6587\u5207\u6362\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/cn.hostease.com\/blog\/wp-content\/uploads\/2026\/07\/31134_postgresql-performance-baseline-workload.webp\" alt=\"\u6570\u636e\u5e93\u8d1f\u8f7d\u753b\u50cf\" loading=\"lazy\" \/><\/p>\n<h2>\u7528\u8fde\u63a5\u89c4\u6a21\u8bc4\u4f30\u5185\u5b58\u548c\u8fdb\u7a0b\u538b\u529b<\/h2>\n<p>PostgreSQL \u4e3a\u6bcf\u4e2a\u5ba2\u6237\u7aef\u8fde\u63a5\u5206\u914d\u72ec\u7acb\u540e\u7aef\u8fdb\u7a0b\uff0c\u6bcf\u4e2a\u8fde\u63a5\u901a\u5e38\u4f1a\u5e26\u6765\u6570 MB \u5230\u5341\u51e0 MB \u7684\u5185\u5b58\u5f00\u9500\u3002\u8fde\u63a5\u6570\u4e0d\u662f\u8d8a\u9ad8\u8d8a\u597d\uff0c\u5982\u679c\u5e94\u7528\u628a 500 \u4e2a Web \u8fde\u63a5\u76f4\u63a5\u6253\u5230\u6570\u636e\u5e93\uff0cCPU \u53ef\u80fd\u5927\u91cf\u6d88\u8017\u5728\u8fdb\u7a0b\u8c03\u5ea6\u548c\u9501\u7b49\u5f85\u4e0a\uff0c\u800c\u4e0d\u662f\u5b9e\u9645\u5904\u7406\u67e5\u8be2\u3002\u6027\u80fd\u57fa\u7ebf\u4e2d\u5e94\u8bb0\u5f55\u4e09\u4e2a\u503c\uff1a\u5e73\u65f6\u6d3b\u8dc3\u8fde\u63a5\u6570\u3001\u9ad8\u5cf0\u6d3b\u8dc3\u8fde\u63a5\u6570\u3001\u5f02\u5e38\u5cf0\u503c\u8fde\u63a5\u6570\u3002<\/p>\n<p>\u5bf9\u4e8e\u4e2d\u5c0f\u578b Web \u5e94\u7528\uff0c\u53ef\u4ee5\u628a PgBouncer \u8fd9\u7c7b\u8fde\u63a5\u6c60\u653e\u5728\u5e94\u7528\u548c\u6570\u636e\u5e93\u4e4b\u95f4\uff0c\u628a\u5ba2\u6237\u7aef\u8fde\u63a5\u4e0e\u771f\u5b9e\u6570\u636e\u5e93\u8fde\u63a5\u62c6\u5f00\u3002\u4e00\u4e2a\u4fdd\u5b88\u8d77\u70b9\u662f\u8ba9 <code>default_pool_size<\/code> \u63a5\u8fd1 CPU \u6838\u5fc3\u6570\u7684 2-4 \u500d\uff0c\u518d\u89c2\u5bdf\u6392\u961f\u65f6\u95f4\u548c\u4e8b\u52a1\u8017\u65f6\u3002\u4f8b\u5982 8 \u6838\u670d\u52a1\u5668\u53ef\u4ee5\u5148\u4ece 16-32 \u4e2a\u540e\u7aef\u8fde\u63a5\u5f00\u59cb\uff0c\u800c\u4e0d\u662f\u76f4\u63a5\u628a <code>max_connections<\/code> \u62c9\u5230 300\u3002<\/p>\n<pre><code class=\"language-ini\">pool_mode = transaction\ndefault_pool_size = 24\nmax_client_conn = 200\nreserve_pool_size = 4\n<\/code><\/pre>\n<p>\u8fde\u63a5\u6c60\u4e0a\u7ebf\u540e\uff0c\u57fa\u7ebf\u8981\u540c\u65f6\u8bb0\u5f55\u4e24\u4fa7\u6307\u6807\uff1a\u5e94\u7528\u7b49\u5f85\u8fde\u63a5\u7684\u8017\u65f6\uff0c\u4ee5\u53ca\u6570\u636e\u5e93\u5185\u771f\u5b9e\u6d3b\u8dc3\u8fde\u63a5\u6570\u3002\u5982\u679c SQL \u672c\u8eab\u53ea\u6267\u884c 40 \u6beb\u79d2\uff0c\u4f46\u63a5\u53e3\u603b\u8017\u65f6\u8d85\u8fc7 1 \u79d2\uff0c\u95ee\u9898\u53ef\u80fd\u662f\u8fde\u63a5\u6c60\u6392\u961f\u3001\u4e8b\u52a1\u672a\u53ca\u65f6\u63d0\u4ea4\uff0c\u6216\u5e94\u7528\u5c42\u6301\u6709\u8fde\u63a5\u65f6\u95f4\u8fc7\u957f\u3002\u628a\u8fd9\u4e9b\u6570\u636e\u7eb3\u5165\u57fa\u7ebf\uff0c\u540e\u7eed\u6269\u5bb9\u65f6\u624d\u77e5\u9053\u662f\u5e94\u8be5\u52a0\u6570\u636e\u5e93\u8d44\u6e90\uff0c\u8fd8\u662f\u5148\u4fee\u5e94\u7528\u8fde\u63a5\u7ba1\u7406\u3002<\/p>\n<h2>\u5185\u5b58\u57fa\u7ebf\u5173\u6ce8\u70ed\u6570\u636e\u96c6\u800c\u4e0d\u662f\u5355\u4e2a\u53c2\u6570<\/h2>\n<p>\u5f88\u591a PostgreSQL \u6027\u80fd\u5efa\u8bae\u4f1a\u76f4\u63a5\u7ed9\u51fa <code>shared_buffers<\/code> \u8bbe\u7f6e\u4e3a\u7cfb\u7edf\u5185\u5b58 25%\u3001<code>effective_cache_size<\/code> \u8bbe\u7f6e\u4e3a 50-75% \u8fd9\u7c7b\u7ecf\u9a8c\u503c\u3002\u5b83\u4eec\u53ef\u4ee5\u4f5c\u4e3a\u8d77\u70b9\uff0c\u4f46\u4e0d\u80fd\u66ff\u4ee3\u70ed\u6570\u636e\u96c6\u8bc4\u4f30\u3002\u771f\u6b63\u8981\u95ee\u7684\u662f\uff1a\u4e1a\u52a1\u6700\u5e38\u8bbf\u95ee\u7684\u6570\u636e\u548c\u7d22\u5f15\u6709\u591a\u5927\uff0c\u6570\u636e\u5e93\u548c\u64cd\u4f5c\u7cfb\u7edf\u7f13\u5b58\u80fd\u5426\u8986\u76d6\u8fd9\u90e8\u5206\u70ed\u70b9\u3002<\/p>\n<p>\u53ef\u4ee5\u7528\u8868\u548c\u7d22\u5f15\u5927\u5c0f\u5148\u4f30\u7b97\u4e3b\u8981\u5bf9\u8c61\u7684\u4f53\u91cf\uff1a<\/p>\n<pre><code class=\"language-sql\">SELECT relname,\n       pg_size_pretty(pg_total_relation_size(relid)) AS total_size,\n       pg_size_pretty(pg_relation_size(relid)) AS table_size\nFROM pg_catalog.pg_statio_user_tables\nORDER BY pg_total_relation_size(relid) DESC\nLIMIT 10;\n<\/code><\/pre>\n<p>\u5047\u8bbe\u8ba2\u5355\u8868\u548c\u76f8\u5173\u7d22\u5f15\u603b\u8ba1 38GB\uff0c\u800c\u670d\u52a1\u5668\u5185\u5b58\u53ea\u6709 16GB\uff0c\u7f13\u5b58\u547d\u4e2d\u7387\u5728\u9ad8\u5cf0\u671f\u4ece 99% \u964d\u5230 94%\uff0c\u5c31\u4e0d\u80fd\u53ea\u9760\u8c03\u5927 <code>work_mem<\/code> \u89e3\u51b3\u3002\u66f4\u5408\u7406\u7684\u52a8\u4f5c\u53ef\u80fd\u662f\u6e05\u7406\u5386\u53f2\u6570\u636e\u3001\u62c6\u5206\u51b7\u70ed\u8868\u3001\u589e\u52a0\u5185\u5b58\uff0c\u6216\u628a\u62a5\u8868\u67e5\u8be2\u8fc1\u79fb\u5230\u53ea\u8bfb\u526f\u672c\u3002\u5bf9\u4e8e\u8fd0\u884c\u5728 <a href=\"https:\/\/cn.hostease.com\/blog\/vps\/\">VPS\uff08\u865a\u62df\u4e13\u7528\u670d\u52a1\u5668\uff09<\/a> \u6216<a href=\"https:\/\/cn.hostease.com\/blog\/server\/\">\u72ec\u7acb\u670d\u52a1\u5668<\/a>\u4e0a\u7684\u6570\u636e\u5e93\uff0c\u5185\u5b58\u57fa\u7ebf\u8fd8\u5e94\u4fdd\u7559 20-30% \u7ed9\u64cd\u4f5c\u7cfb\u7edf\u6587\u4ef6\u7f13\u5b58\u548c\u540e\u53f0\u4efb\u52a1\uff0c\u907f\u514d\u5cf0\u503c\u65f6\u89e6\u53d1 swap\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/cn.hostease.com\/blog\/wp-content\/uploads\/2026\/07\/31134_postgresql-performance-baseline-memory.webp\" alt=\"\u5185\u5b58\u4e0e\u7f13\u5b58\u57fa\u7ebf\" loading=\"lazy\" \/><\/p>\n<h2>\u78c1\u76d8 I\/O \u57fa\u7ebf\u51b3\u5b9a\u5199\u5165\u9ad8\u5cf0\u80fd\u5426\u625b\u4f4f<\/h2>\n<p>\u6570\u636e\u5e93\u7a33\u5b9a\u6027\u5f88\u5927\u7a0b\u5ea6\u53d6\u51b3\u4e8e\u78c1\u76d8 I\/O\u3002\u8bfb\u67e5\u8be2\u6162\u53ef\u80fd\u7531\u7f13\u5b58\u4e0d\u8db3\u9020\u6210\uff0c\u5199\u5165\u6162\u5219\u5e38\u5e38\u548c WAL \u5237\u76d8\u3001\u68c0\u67e5\u70b9\u3001\u968f\u673a\u5199\u5ef6\u8fdf\u6709\u5173\u3002\u6027\u80fd\u57fa\u7ebf\u91cc\u81f3\u5c11\u8981\u8bb0\u5f55\u5e73\u5747\u8bfb\u5199\u5ef6\u8fdf\u300195 \u5206\u4f4d\u5ef6\u8fdf\u3001\u68c0\u67e5\u70b9\u9891\u7387\u548c\u78c1\u76d8\u961f\u5217\u957f\u5ea6\u3002\u53ea\u770b\u78c1\u76d8\u4f7f\u7528\u7387\u4e0d\u8db3\u4ee5\u5224\u65ad\u98ce\u9669\uff0c\u56e0\u4e3a 40% \u4f7f\u7528\u7387\u4e5f\u53ef\u80fd\u4f34\u968f\u5f88\u9ad8\u7684\u968f\u673a\u5199\u5ef6\u8fdf\u3002<\/p>\n<p>\u5728 PostgreSQL \u5185\u90e8\uff0c\u53ef\u4ee5\u5173\u6ce8\u68c0\u67e5\u70b9\u548c\u7f13\u51b2\u533a\u5199\u5165\u60c5\u51b5\uff1a<\/p>\n<pre><code class=\"language-sql\">SELECT checkpoints_timed,\n       checkpoints_req,\n       checkpoint_write_time,\n       buffers_checkpoint,\n       buffers_backend\nFROM pg_stat_bgwriter;\n<\/code><\/pre>\n<p>\u5982\u679c <code>checkpoints_req<\/code> \u589e\u957f\u5f88\u5feb\uff0c\u8bf4\u660e\u68c0\u67e5\u70b9\u7ecf\u5e38\u88ab WAL \u7a7a\u95f4\u63d0\u524d\u89e6\u53d1\uff0c\u5199\u5165\u9ad8\u5cf0\u53ef\u80fd\u51fa\u73b0\u660e\u663e\u6296\u52a8\u3002\u53ef\u4ee5\u8bc4\u4f30 <code>max_wal_size<\/code>\u3001<code>checkpoint_timeout<\/code> \u548c <code>checkpoint_completion_target<\/code>\uff0c\u4f46\u6bcf\u6b21\u53ea\u6539\u4e00\u4e2a\u53d8\u91cf\uff0c\u5e76\u4fdd\u7559\u53d8\u66f4\u524d\u540e 24 \u5c0f\u65f6\u7684 I\/O \u6570\u636e\u3002\u5bf9\u4e8e\u8ba2\u5355\u3001\u65e5\u5fd7\u3001\u6d88\u606f\u8fd9\u7c7b\u6301\u7eed\u5199\u5165\u573a\u666f\uff0cSSD \u6216 NVMe \u5b58\u50a8\u7684\u968f\u673a\u5199\u80fd\u529b\u5f80\u5f80\u6bd4 CPU \u4e3b\u9891\u66f4\u5173\u952e\u3002<\/p>\n<h2>\u628a\u76d1\u63a7\u9608\u503c\u5199\u6210\u53ef\u6267\u884c\u89c4\u5219<\/h2>\n<p>\u57fa\u7ebf\u5982\u679c\u53ea\u505c\u7559\u5728\u6587\u6863\u91cc\uff0c\u5f88\u5feb\u4f1a\u5931\u6548\u3002\u5efa\u8bae\u628a\u5173\u952e\u6307\u6807\u5199\u6210\u76d1\u63a7\u9608\u503c\uff0c\u5e76\u6309\u544a\u8b66\u7ea7\u522b\u62c6\u5206\u3002\u4f8b\u5982\u7f13\u5b58\u547d\u4e2d\u7387\u8fde\u7eed 10 \u5206\u949f\u4f4e\u4e8e 98% \u4f5c\u4e3a\u89c2\u5bdf\u544a\u8b66\uff0c\u4f4e\u4e8e 95% \u4f5c\u4e3a\u5904\u7406\u544a\u8b66\uff1b\u6d3b\u8dc3\u8fde\u63a5\u8d85\u8fc7\u8fde\u63a5\u6c60\u540e\u7aef\u8fde\u63a5\u6570\u7684 80% \u6301\u7eed 5 \u5206\u949f\uff0c\u9700\u8981\u68c0\u67e5\u5e94\u7528\u8fde\u63a5\u91ca\u653e\uff1b\u78c1\u76d8 95 \u5206\u4f4d\u5199\u5ef6\u8fdf\u8d85\u8fc7 20 \u6beb\u79d2\uff0c\u5219\u8981\u6392\u67e5\u68c0\u67e5\u70b9\u3001\u6279\u91cf\u5199\u5165\u6216\u5e95\u5c42\u5b58\u50a8\u3002<\/p>\n<p>\u5e38\u89c1\u7684\u57fa\u7ebf\u6307\u6807\u53ef\u4ee5\u6309\u4e0b\u9762\u65b9\u5f0f\u6574\u7406\uff1a<\/p>\n<ul>\n<li>\u67e5\u8be2\u4fa7\uff1a\u8bb0\u5f55\u603b\u8017\u65f6\u6700\u9ad8\u7684\u524d 20 \u6761 SQL\uff0c\u5355\u6761 SQL 95 \u5206\u4f4d\u8017\u65f6\u8d85\u8fc7 500 \u6beb\u79d2\u65f6\u8fdb\u5165\u4f18\u5316\u6e05\u5355\u3002<\/li>\n<li>\u8fde\u63a5\u4fa7\uff1a\u9ad8\u5cf0\u6d3b\u8dc3\u8fde\u63a5\u6570\u957f\u671f\u8d85\u8fc7\u6c60\u5927\u5c0f 80% \u65f6\uff0c\u68c0\u67e5\u8fde\u63a5\u6cc4\u6f0f\u3001\u957f\u4e8b\u52a1\u548c\u6c60\u5316\u6a21\u5f0f\u3002<\/li>\n<li>\u5185\u5b58\u4fa7\uff1a\u7f13\u5b58\u547d\u4e2d\u7387\u4f4e\u4e8e 98% \u4e14\u78c1\u76d8\u8bfb\u5ef6\u8fdf\u4e0a\u5347\u65f6\uff0c\u8bc4\u4f30\u70ed\u6570\u636e\u96c6\u548c\u5185\u5b58\u5bb9\u91cf\u3002<\/li>\n<li>\u5199\u5165\u4fa7\uff1a\u68c0\u67e5\u70b9\u63d0\u524d\u89e6\u53d1\u6b21\u6570\u6301\u7eed\u589e\u52a0\u65f6\uff0c\u590d\u6838 WAL \u7a7a\u95f4\u3001\u6279\u91cf\u4efb\u52a1\u548c\u5b58\u50a8\u5ef6\u8fdf\u3002<\/li>\n<li>\u589e\u957f\u4fa7\uff1a\u6838\u5fc3\u8868\u6309\u5468\u7edf\u8ba1\u5bb9\u91cf\u589e\u901f\uff0c\u9884\u8ba1 60 \u5929\u5185\u89e6\u8fbe\u78c1\u76d8 75% \u65f6\u63d0\u524d\u89c4\u5212\u6e05\u7406\u6216\u6269\u5bb9\u3002<\/li>\n<\/ul>\n<p>\u8fd9\u4e9b\u9608\u503c\u4e0d\u662f\u56fa\u5b9a\u7b54\u6848\uff0c\u5e94\u8be5\u7ed3\u5408\u4e1a\u52a1\u5cf0\u503c\u8c03\u6574\u3002\u5916\u8d38\u7ad9\u3001SaaS \u540e\u53f0\u3001\u8bba\u575b\u548c\u8ba2\u5355\u7cfb\u7edf\u7684\u9ad8\u5cf0\u6a21\u5f0f\u4e0d\u540c\uff0c\u540c\u4e00\u4e2a 500 \u6beb\u79d2 SQL \u5728\u540e\u53f0\u62a5\u8868\u91cc\u53ef\u80fd\u53ef\u4ee5\u63a5\u53d7\uff0c\u5728\u652f\u4ed8\u56de\u8c03\u94fe\u8def\u91cc\u5c31\u9700\u8981\u4f18\u5148\u5904\u7406\u3002\u66f4\u591a\u670d\u52a1\u5668\u4fa7\u6392\u67e5\u548c\u8d44\u6e90\u89c4\u5212\u65b9\u6cd5\uff0c\u53ef\u4ee5\u53c2\u8003 <a href=\"https:\/\/cn.hostease.com\/blog\/guides\/dedicated-server-stable-workload-return\/\">\u7a33\u5b9a\u8d1f\u8f7d\u670d\u52a1\u5668\u89c4\u5212\u6307\u5357<\/a>\u3002<\/p>\n<h2>\u90e8\u7f72\u73af\u5883\u4e5f\u8981\u8fdb\u5165\u57fa\u7ebf\u8303\u56f4<\/h2>\n<p>PostgreSQL \u6027\u80fd\u57fa\u7ebf\u4e0d\u53ea\u5c5e\u4e8e\u6570\u636e\u5e93\u672c\u8eab\uff0c\u8fd8\u8981\u8986\u76d6\u8fd0\u884c\u73af\u5883\u3002\u64cd\u4f5c\u7cfb\u7edf\u5c42\u9762\u5efa\u8bae\u8bb0\u5f55\u5185\u6838\u7248\u672c\u3001\u6587\u4ef6\u7cfb\u7edf\u3001swap \u8bbe\u7f6e\u3001\u78c1\u76d8\u6302\u8f7d\u53c2\u6570\u548c\u5907\u4efd\u7a97\u53e3\u3002\u6bd4\u5982 <code>vm.swappiness<\/code> \u53ef\u4ee5\u8bbe\u7f6e\u4e3a 1 \u6216 5\uff0c\u51cf\u5c11\u6570\u636e\u5e93\u5185\u5b58\u88ab\u6362\u51fa\u7684\u6982\u7387\uff1b\u900f\u660e\u5927\u9875\uff08THP\uff09\u5728\u90e8\u5206\u573a\u666f\u4e0b\u4f1a\u5e26\u6765\u5ef6\u8fdf\u6296\u52a8\uff0c\u751f\u4ea7\u6570\u636e\u5e93\u901a\u5e38\u5efa\u8bae\u5173\u95ed\u540e\u518d\u89c2\u5bdf\u3002<\/p>\n<p>\u5982\u679c\u6570\u636e\u5e93\u548c Web \u5e94\u7528\u90e8\u7f72\u5728\u540c\u4e00\u53f0\u670d\u52a1\u5668\u4e0a\uff0c\u8fd8\u8981\u628a Web \u8fdb\u7a0b\u3001\u7f13\u5b58\u670d\u52a1\u3001\u5b9a\u65f6\u4efb\u52a1\u7eb3\u5165\u5bb9\u91cf\u89c4\u5212\u3002\u4e00\u4e2a\u5e38\u89c1\u95ee\u9898\u662f\u767d\u5929\u6570\u636e\u5e93\u8868\u73b0\u6b63\u5e38\uff0c\u51cc\u6668\u5907\u4efd\u6216\u62a5\u8868\u4efb\u52a1\u542f\u52a8\u540e\uff0c\u78c1\u76d8 I\/O \u88ab\u62a2\u5360\uff0c\u7b2c\u4e8c\u5929\u7528\u6237\u770b\u5230\u7684\u662f\u9875\u9762\u6253\u5f00\u6162\u3002\u5efa\u8bae\u628a\u5907\u4efd\u3001\u7edf\u8ba1\u4efb\u52a1\u548c\u7d22\u5f15\u7ef4\u62a4\u653e\u8fdb\u57fa\u7ebf\u8bb0\u5f55\uff0c\u660e\u786e\u5b83\u4eec\u7684\u6267\u884c\u65f6\u95f4\u3001\u6301\u7eed\u65f6\u957f\u548c\u8d44\u6e90\u6d88\u8017\u3002<\/p>\n<p>\u5728\u9009\u62e9\u627f\u8f7d PostgreSQL \u7684\u57fa\u7840\u8bbe\u65bd\u65f6\uff0c\u5efa\u8bae\u4f18\u5148\u786e\u8ba4\u4e09\u70b9\uff1a\u662f\u5426\u6709\u7a33\u5b9a\u7684 SSD\/NVMe \u5b58\u50a8\uff0c\u662f\u5426\u65b9\u4fbf\u6309\u9700\u6269\u5c55\u5185\u5b58\uff0c\u662f\u5426\u80fd\u63d0\u4f9b\u6e05\u6670\u7684\u7f51\u7edc\u548c\u786c\u4ef6\u76d1\u63a7\u3002Hostease \u7684 <a href=\"https:\/\/cn.hostease.com\/blog\/server\/\">\u670d\u52a1\u5668\u680f\u76ee<\/a>\u4e2d\u6709\u4e0d\u5c11\u90e8\u7f72\u548c\u8fd0\u7ef4\u53c2\u8003\uff0c\u4f60\u53ef\u4ee5\u7ed3\u5408\u4e1a\u52a1\u8d1f\u8f7d\u9009\u62e9\u5408\u9002\u7684\u72ec\u670d\uff08[\u72ec\u7acb\u670d\u52a1\u5668](https:\/\/cn.hostease.com\/dedicated-server\/)\uff09\u6216 [VPS](https:\/\/cn.hostease.com\/vps\/)\uff08[\u865a\u62df\u4e13\u7528\u670d\u52a1\u5668](https:\/\/cn.hostease.com\/vps\/)\uff09\u65b9\u6848\u3002<\/p>\n<h2>\u603b\u7ed3\uff1a\u57fa\u7ebf\u6bd4\u4e34\u65f6\u8c03\u53c2\u66f4\u53ef\u9760<\/h2>\n<p>\u603b\u7ed3\u6765\u8bf4\uff0cPostgreSQL \u6027\u80fd\u57fa\u7ebf\u89c4\u5212\u7684\u4ef7\u503c\uff0c\u662f\u628a\u6570\u636e\u5e93\u7a33\u5b9a\u6027\u4ece\u201c\u51ed\u7ecf\u9a8c\u611f\u89c9\u201d\u53d8\u6210\u201c\u7528\u6570\u636e\u5224\u65ad\u201d\u3002\u5efa\u8bae\u5148\u5efa\u7acb\u4e1a\u52a1\u8d1f\u8f7d\u753b\u50cf\uff0c\u518d\u4f9d\u6b21\u786e\u8ba4\u8fde\u63a5\u89c4\u6a21\u3001\u70ed\u6570\u636e\u96c6\u3001\u78c1\u76d8 I\/O\u3001\u76d1\u63a7\u9608\u503c\u548c\u90e8\u7f72\u73af\u5883\u3002\u5b8c\u6210\u7b2c\u4e00\u7248\u57fa\u7ebf\u540e\uff0c\u53ef\u4ee5\u6bcf\u5468\u590d\u67e5\u4e00\u6b21\u5bb9\u91cf\u589e\u957f\uff0c\u6bcf\u6708\u590d\u76d8\u4e00\u6b21\u6162\u67e5\u8be2\u548c\u544a\u8b66\u8bb0\u5f55\u3002\u5982\u679c\u4f60\u9700\u8981\u4e3a\u5373\u5c06\u589e\u957f\u7684\u4e1a\u52a1\u63d0\u524d\u51c6\u5907\u6570\u636e\u5e93\u73af\u5883\uff0c\u53ef\u4ee5\u8003\u8651\u5148\u7528\u5c0f\u89c4\u6a21\u538b\u6d4b\u9a8c\u8bc1\u8d44\u6e90\u8fb9\u754c\uff0c\u518d\u51b3\u5b9a\u662f\u4f18\u5316\u73b0\u6709\u914d\u7f6e\u3001\u62c6\u5206\u8bfb\u5199\u8d1f\u8f7d\uff0c\u8fd8\u662f\u5347\u7ea7\u5230\u66f4\u5408\u9002\u7684\u670d\u52a1\u5668\u65b9\u6848\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u8bb2\u89e3 PostgreSQL \u6027\u80fd\u57fa\u7ebf\u89c4\u5212\u65b9\u6cd5\uff0c\u8986\u76d6\u67e5\u8be2\u753b\u50cf\u3001\u8fde\u63a5\u89c4\u6a21\u3001\u5185\u5b58\u53c2\u6570\u3001I\/O \u6307\u6807\u548c\u76d1\u63a7\u9608\u503c\uff0c\u5e2e\u52a9\u6570\u636e\u5e93\u7a33\u5b9a\u8fd0\u884c\u3002<\/p>\n","protected":false},"author":2,"featured_media":31176,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[3822],"tags":[4402,4607,4606],"class_list":["post-31134","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-guides","tag-postgresql","tag-4607","tag-4606"],"aioseo_notices":[],"jetpack_featured_media_url":"https:\/\/cn.hostease.com\/blog\/wp-content\/uploads\/2026\/06\/31134_postgresql-performance-tuning-guide-cover.webp","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/posts\/31134","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/comments?post=31134"}],"version-history":[{"count":3,"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/posts\/31134\/revisions"}],"predecessor-version":[{"id":32036,"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/posts\/31134\/revisions\/32036"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/media\/31176"}],"wp:attachment":[{"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/media?parent=31134"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/categories?post=31134"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/tags?post=31134"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}