{"Entry":{"collection":"metric","key":"pg_stat_slru-blks_hit","name":"pg_stat_slru.blks_hit","aliases":["blks_hit","pg_stat_slru"],"metadata":{"aliases":["blks_hit","pg_stat_slru"],"category":"pg_stat_slru","content_hash":"4d2047138105bc7064337b26fe52a55bc671e2c90b3c2a7412c9971825de37a7","derived_content_hash":"30bce662cdf9cb1eab073fadfd89d800bc812901d4d85d7d51d331909636053b","imported_at":"2026-09-30T00:40:46.137592+08:00","name":"pg_stat_slru.blks_hit","name_zh":"","slug":"pg_stat_slru-blks_hit","summary":"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)"}},"Definition":{"Collection":"metric","Key":"pg_stat_slru-blks_hit","SourceDatabase":"center","Version":"18","SourceTable":"statistics_metric","SourceKey":"pg_stat_slru-blks_hit","SourceRevision":"555610c24d53e4316da5b7d3fc25c279d96856d5e0e23ee308c328c5fa881d9f","Facts":{"comparison_data":{"field":"blks_hit","sql_type":"bigint","units_mentioned":["blocks"],"view":"pg_stat_slru"},"comparison_hash":"a5c429c924af557d0e79571fdf4b5dcbd7c80a83b9370619b6e02e12530d4b62","description":["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)"],"description_zh":"已经在 SLRU 中的磁盘块被发现的次数，因此不需要读取（这只包括 SLRU 中的命中，不包括操作系统的文件系统缓存中的命中）","description_zh_html":"\u003cp\u003epg_stat_slru.blks_hit 统计字段。\u003c/p\u003e\u003cdl\u003e\u003cdt\u003e视图\u003c/dt\u003e\u003cdd\u003e\u003ccode\u003epg_stat_slru\u003c/code\u003e\u003c/dd\u003e\u003cdt\u003e字段\u003c/dt\u003e\u003cdd\u003e\u003ccode\u003eblks_hit\u003c/code\u003e\u003c/dd\u003e\u003cdt\u003eSQL 类型\u003c/dt\u003e\u003cdd\u003e\u003ccode\u003ebigint\u003c/code\u003e\u003c/dd\u003e\u003c/dl\u003e\u003ch3\u003e同版本中文手册定义\u003c/h3\u003e\u003cp\u003e已经在 SLRU 中的磁盘块被发现的次数，因此不需要读取（这只包括 SLRU 中的命中，不包括操作系统的文件系统缓存中的命中）\u003c/p\u003e\u003cp\u003e\u003ca href=\"/zh/docs/18/monitoring-stats.html#\"\u003e查看完整中文手册与上下文\u003c/a\u003e。\u003c/p\u003e","documented":true,"facts":[{"label":"View","value":"pg_stat_slru"},{"label":"Field","value":"blks_hit"},{"label":"SQL type","value":"bigint"},{"label":"Units named in the field definition","value":"blocks"},{"label":"Reset observation","value":"Time at which these statistics were last reset"}],"facts_zh":[{"label":"视图","value":"pg_stat_slru"},{"label":"字段","value":"blks_hit"},{"label":"SQL 类型","value":"bigint"},{"label":"字段定义记载的单位","value":"blocks"},{"label":"重置条件","value":"这些统计上次重置的时间"}],"field":"blks_hit","manual_html":"","manual_path":"/docs/18/monitoring-stats.html","related":[{"label":"pg_stat_slru columns","url":"/wiki/catalog/pg_stat_slru/?v=18"},{"label":"Statistics collection and reset functions","url":"/docs/18/monitoring-stats.html"}],"release":{"channel":"stable","label":"18.6","major":"18","ref":"https://ftp.postgresql.org/pub/source/v18.6/postgresql-18.6.tar.bz2","revision":"555610c24d53e4316da5b7d3fc25c279d96856d5e0e23ee308c328c5fa881d9f"},"sections":[{"paragraphs":["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."],"title":"View semantics"},{"paragraphs":["Read the same-version statistics collection and view documentation below for reset scope and visibility. 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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."],"title":"View semantics"},{"paragraphs":["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."],"title":"Collection and reset context"},{"code":"SELECT blks_hit FROM pg_catalog.pg_stat_slru;","paragraphs":["Example query; no execution result or measured value is asserted."],"title":"Inspect this field"}],"tables":[]}},"RequestedLocale":"en","Fallback":false,"Versions":["13","14","15","16","17","18","19","20"],"Locales":["en","zh-Hans"],"Signatures":null,"Spellings":null,"SQLState":null,"Evidence":null}