{"Entry":{"collection":"guc","key":"bgwriter_all_maxpages","name":"bgwriter_all_maxpages","aliases":[],"metadata":{"baseline":false,"boot_human":"Not specified","boot_val":null,"category":"Resource Usage","category_zh":"","changed_in":[],"changes":[{"documentation_changed":false,"fields":{},"from":"8.0","status":"added","to":"8.1"},{"documentation_changed":true,"fields":{},"from":"8.1","status":"changed","to":"8.2"},{"documentation_changed":false,"fields":{},"from":"8.2","status":"removed","to":"8.3"}],"content_hash":"22ba2ffee03461afa34f627ad983682af75df87497ef127864143b9e53b17bee","context":"","default_changed_in":[],"default_history":[],"editorial":{},"enumvals":[],"first_version":"8.1","group":"Resource Usage","group_slug":"resource","imported_at":"2026-09-27T17:57:30.868551+08:00","intro_commit":{},"key":"bgwriter_all_maxpages","last_version":"8.2","max_val":"","min_val":"","name":"bgwriter_all_maxpages","position":41,"present_in":["8.1","8.2"],"short_desc":"In each round, no more than this many buffers will be written as a result of the scan of the entire buffer pool.","short_desc_zh":"","source_rev":"english-manuals:a43a6b1ece216dc6b1bc965456c85d6cbe16e8a9e48827032d2481249cb86fb0","unit":"","vartype":"integer"}},"Definition":{"Collection":"guc","Key":"bgwriter_all_maxpages","SourceDatabase":"center","Version":"8.2","SourceTable":"guc","SourceKey":"bgwriter_all_maxpages","SourceRevision":"english-manuals:a43a6b1ece216dc6b1bc965456c85d6cbe16e8a9e48827032d2481249cb86fb0","Facts":{"boot_val":null,"category":"Background Writer","context":"","description":"In each round, no more than this many buffers will be written as a result of the scan of the entire buffer pool. (If this limit is reached, the scan stops, and resumes at the next buffer during the next round.) The default value is five buffers. This parameter can only be set in the postgresql.conf file or on the server command line.","doc":{"anchor":"GUC-BGWRITER-ALL-MAXPAGES","file":"runtime-config-resource.html","lang":"en","sha256":"58e7050a55a788769e3cb0bb328aebf1aeb4d49b4cc7e101c0c375786ccb870c","slug":"8.2"},"documented":true,"enumvals":[],"extra_desc":"","lang":"en","max_val":null,"metadata_version":"","min_val":null,"name":"bgwriter_all_maxpages","short_desc":"","source":"english-manual","unit":"","vartype":"integer"},"ManualEvidence":{"doc":{"anchor":"GUC-BGWRITER-ALL-MAXPAGES","file":"runtime-config-resource.html","lang":"en","sha256":"58e7050a55a788769e3cb0bb328aebf1aeb4d49b4cc7e101c0c375786ccb870c","slug":"8.2"}},"MeasuredEvidence":{"metadata_version":""}},"Text":{"Collection":"guc","Key":"bgwriter_all_maxpages","SourceDatabase":"center","Version":"8.2","Locale":"en","Title":"bgwriter_all_maxpages","Summary":"In each round, no more than this many buffers will be written as a result of the scan of the entire buffer pool. (If this limit is reached, the scan stops, and resumes at the next buffer during the next round.) The default value is five buffers. This parameter can only be set in the postgresql.conf file or on the server command line.","BodyHTML":"\u003cp\u003eIn each round, no more than this many buffers will be written as a result of the scan of the entire buffer pool. (If this limit is reached, the scan stops, and resumes at the next buffer during the next round.) The default value is five buffers. This parameter can only be set in the postgresql.conf file or on the server command line.\u003c/p\u003e","SourceRevision":"english-manuals:a43a6b1ece216dc6b1bc965456c85d6cbe16e8a9e48827032d2481249cb86fb0","ContentHash":"a198a4bf971750f9335b7d4cb5660f45dbe89dec28e0d1405119fa6b8e3c5843","Payload":{"description":"In each round, no more than this many buffers will be written as a result of the scan of the entire buffer pool. (If this limit is reached, the scan stops, and resumes at the next buffer during the next round.) The default value is five buffers. This parameter can only be set in the postgresql.conf file or on the server command line."}},"RequestedLocale":"zh-Hans","Fallback":true,"Versions":["8.1","8.2"],"Locales":["en"],"Signatures":null,"Spellings":null,"SQLState":null,"Evidence":null}