pg_stat_slru.blks_hit \u7edf\u8ba1\u5b57\u6bb5\u3002
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"}, "14": {"view": "pg_stat_slru", "facts": [{"label": "\u89c6\u56fe", "value": "pg_stat_slru"}, {"label": "\u5b57\u6bb5", "value": "blks_hit"}, {"label": "SQL \u7c7b\u578b", "value": "bigint"}, {"label": "\u5b57\u6bb5\u5b9a\u4e49\u8bb0\u8f7d\u7684\u5355\u4f4d", "value": "blocks"}, {"label": "\u91cd\u7f6e\u6761\u4ef6", "value": "\u8fd9\u4e9b\u7edf\u8ba1\u4e0a\u6b21\u91cd\u7f6e\u7684\u65f6\u95f4"}], "field": "blks_hit", "tables": [], "related": [{"url": "/wiki/catalog/pg_stat_slru/?v=14", "label": "pg_stat_slru \u5b57\u6bb5"}, {"url": "/docs/14/monitoring-stats.html", "label": "\u7edf\u8ba1\u6536\u96c6\u4e0e\u91cd\u7f6e\u51fd\u6570"}], "release": {"ref": "https://ftp.postgresql.org/pub/source/v14.24/postgresql-14.24.tar.bz2", "label": "14.24", "major": "14", "channel": "stable", "revision": "a7fa7ed3d558172355f51406097a7bd4f6b473be80f311ef7cda96bf383d8897"}, "sources": [{"url": "/docs/14/monitoring-stats.html#PG-STAT-SLRU-VIEW", "path": "monitoring-stats.html", "label": "PostgreSQL 14 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", "body_sha256": "1d5385c17ef020a9847a86c176c9e622d0c81c79d0c7408fa7fe089100a7b149", "content_hash": "6a877c2c4673bcc60277f2b3f05b3fc29aa06d4e6d12f6cdd6b44c5504ea0c67", "source_database": "center", "source_revision": "555610c24d53e4316da5b7d3fc25c279d96856d5e0e23ee308c328c5fa881d9f"}, "signature": "SELECT blks_hit FROM pg_catalog.pg_stat_slru;", "tables_zh": [], "documented": true, "description": ["\u5df2\u7ecf\u5728 SLRU \u4e2d\u7684\u78c1\u76d8\u5757\u88ab\u53d1\u73b0\u7684\u6b21\u6570\uff0c\u56e0\u6b64\u4e0d\u9700\u8981\u8bfb\u53d6\uff08\u8fd9\u53ea\u5305\u62ec SLRU \u4e2d\u7684\u547d\u4e2d\uff0c\u4e0d\u5305\u62ec\u64cd\u4f5c\u7cfb\u7edf\u7684\u6587\u4ef6\u7cfb\u7edf\u7f13\u5b58\u4e2d\u7684\u547d\u4e2d\uff09"], "manual_html": "", "manual_path": "/docs/18/monitoring-stats.html", "sections_zh": [{"title": "\u89c6\u56fe\u8bed\u4e49", "paragraphs": ["PostgreSQL \u901a\u8fc7 SLRU\uff08\u7b80\u5355\u6700\u8fd1\u6700\u5c11\u4f7f\u7528\uff09\u7f13\u5b58\u8bbf\u95ee\u67d0\u4e9b\u78c1\u76d8\u4fe1\u606f\u3002pg_stat_slru \u89c6\u56fe\u4e3a\u6bcf\u4e2a\u8ddf\u8e2a\u7684 SLRU \u7f13\u5b58\u63d0\u4f9b\u4e00\u884c\uff0c\u663e\u793a\u5176\u7f13\u5b58\u9875\u8bbf\u95ee\u7edf\u8ba1\u3002\u5bf9\u4e8e\u6838\u5fc3\u670d\u52a1\u5668\u4e2d\u7684\u6bcf\u4e2a SLRU \u7f13\u5b58\uff0c\u90fd\u6709\u4e00\u4e2a\u540d\u79f0\u4ee5 _buffers \u4e3a\u540e\u7f00\u7684\u914d\u7f6e\u53c2\u6570\u6765\u63a7\u5236\u5176\u5927\u5c0f\u3002"]}, {"title": "\u91c7\u96c6\u4e0e\u91cd\u7f6e\u8bed\u4e49", "paragraphs": ["\u91cd\u7f6e\u8303\u56f4\u548c\u53ef\u89c1\u6027\u8bf7\u53c2\u9605\u4e0b\u65b9\u540c\u7248\u672c\u7684\u7edf\u8ba1\u4fe1\u606f\u6536\u96c6\u4e0e\u89c6\u56fe\u6587\u6863\u3002\u4e0d\u6839\u636e\u5b57\u6bb5\u540d\u79f0\u63a8\u65ad\u5404\u5b57\u6bb5\u7684\u91cd\u7f6e\u89c4\u5219\u3002"]}, {"code": "SELECT blks_hit FROM pg_catalog.pg_stat_slru;", "title": "\u67e5\u770b\u6b64\u5b57\u6bb5", "paragraphs": ["\u793a\u4f8b\u67e5\u8be2\uff1b\u4e0d\u8868\u793a\u5df2\u6267\u884c\uff0c\u4e5f\u4e0d\u63d0\u4f9b\u5b9e\u6d4b\u503c\u3002"]}], "source_only": false, "localization": {"status": "complete", "sources": [{"url": "/docs/18/monitoring-stats.html", "method": "same-major semantic node", "sha256": "ff0b10c5fb4b75c247e38b7ad0e8a50fa0b6ebaa25e68c8c67a1ca972bda40b1", "language": "zh", "matched_nodes": ["#MONITORING-STATS/div[29]/div[5]/div[1]/table[0]/tbody[2]/tr[2]/td[0]/p[1]"]}], "language": "zh", "original_text": {"/versions/18/description/0": "Number of times disk blocks were found already in the SLRU, so that a read was not necessary (this only includes hits in the SLRU, not the operating system's file system cache)", "/versions/18/facts/0/label": "View", "/versions/18/facts/1/label": "Field", "/versions/18/facts/2/label": "SQL type", "/versions/18/facts/3/label": "Units named in the field definition", "/versions/18/facts/4/label": "Reset observation", "/versions/18/facts/4/value": "Time at which these statistics were last reset", "/versions/18/related/0/label": "pg_stat_slru columns", "/versions/18/related/1/label": "Statistics collection and reset functions", "/versions/18/sections/0/title": "View semantics", "/versions/18/sections/1/title": "Collection and reset context", "/versions/18/sections/2/title": "Inspect this field", "/versions/18/sections/0/paragraphs/0": "PostgreSQL accesses certain on-disk information via SLRU (simple least-recently-used) caches. The pg_stat_slru view will contain one row for each tracked SLRU cache, showing statistics about access to cached pages.\n\nFor each SLRU cache that's part of the core server, there is a configuration parameter that controls its size, with the suffix _buffers appended.", "/versions/18/sections/1/paragraphs/0": "Read the same-version statistics collection and view documentation below for reset scope and visibility. No per-field reset rule is inferred from the field name.", "/versions/18/sections/2/paragraphs/0": "Example query; no execution result or measured value is asserted."}, "fallback_fields": [], "source_language": "en", "original_snapshot_sha256": "bcff92d624f02d05ce2f9ec5f607019988abd67c0cff29d2834ff312f34a3e1c", "canonical_center_text_hash": "6a877c2c4673bcc60277f2b3f05b3fc29aa06d4e6d12f6cdd6b44c5504ea0c67"}, "description_zh": "\u5df2\u7ecf\u5728 SLRU \u4e2d\u7684\u78c1\u76d8\u5757\u88ab\u53d1\u73b0\u7684\u6b21\u6570\uff0c\u56e0\u6b64\u4e0d\u9700\u8981\u8bfb\u53d6\uff08\u8fd9\u53ea\u5305\u62ec SLRU \u4e2d\u7684\u547d\u4e2d\uff0c\u4e0d\u5305\u62ec\u64cd\u4f5c\u7cfb\u7edf\u7684\u6587\u4ef6\u7cfb\u7edf\u7f13\u5b58\u4e2d\u7684\u547d\u4e2d\uff09", "comparison_data": {"view": "pg_stat_slru", "field": "blks_hit", "sql_type": "bigint", "units_mentioned": ["blocks"]}, "comparison_hash": "a5c429c924af557d0e79571fdf4b5dcbd7c80a83b9370619b6e02e12530d4b62", "manual_language": "zh", "units_mentioned": ["blocks"], "description_zh_html": "pg_stat_slru.blks_hit \u7edf\u8ba1\u5b57\u6bb5\u3002
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