{"Entry":{"collection":"guc","key":"max_fsm_pages","name":"max_fsm_pages","aliases":[],"metadata":{"baseline":true,"boot_human":"Not specified","boot_val":null,"category":"Resource Usage","category_zh":"","changed_in":[],"changes":[{"documentation_changed":true,"fields":{},"from":"8.1","status":"changed","to":"8.2"},{"documentation_changed":false,"fields":{},"from":"8.3","status":"removed","to":"8.4"}],"content_hash":"17bce9dcb2de6de8c541155080963678bbbf1380f982c25f8b8a96cc5068f960","context":"","default_changed_in":[],"default_history":[],"editorial":{},"enumvals":[],"first_version":"7.4","group":"Resource Usage","group_slug":"resource","imported_at":"2026-09-27T17:57:31.685235+08:00","intro_commit":{},"key":"max_fsm_pages","last_version":"8.3","max_val":"","min_val":"","name":"max_fsm_pages","position":265,"present_in":["7.4","8.0","8.1","8.2","8.3"],"short_desc":"Sets the maximum number of disk pages for which free space will be tracked in the shared free-space map.","short_desc_zh":"","source_rev":"english-manuals:077eda99e435b4041bede0216ed2920b9016cbf316486ed337fe38dae20b2766","unit":"","vartype":"integer"}},"Definition":{"Collection":"guc","Key":"max_fsm_pages","SourceDatabase":"center","Version":"8.3","SourceTable":"guc","SourceKey":"max_fsm_pages","SourceRevision":"english-manuals:077eda99e435b4041bede0216ed2920b9016cbf316486ed337fe38dae20b2766","Facts":{"boot_val":null,"category":"Free Space Map","context":"","description":"Sets the maximum number of disk pages for which free space will be tracked in the shared free-space map. Six bytes of shared memory are consumed for each page slot. This setting must be at least 16 * max_fsm_relations. The default is chosen by initdb depending on the amount of available memory, and can range from 20k to 200k pages. This parameter can only be set at server start.","doc":{"anchor":"GUC-MAX-FSM-PAGES","file":"runtime-config-resource.html","lang":"en","sha256":"98b3e1ab6318e0ba744b9b869412465634f0a7d46332f869e6ea4c5e3f5dd05d","slug":"8.3"},"documented":true,"enumvals":[],"extra_desc":"","lang":"en","max_val":null,"metadata_version":"","min_val":null,"name":"max_fsm_pages","short_desc":"","source":"english-manual","unit":"","vartype":"integer"},"ManualEvidence":{"doc":{"anchor":"GUC-MAX-FSM-PAGES","file":"runtime-config-resource.html","lang":"en","sha256":"98b3e1ab6318e0ba744b9b869412465634f0a7d46332f869e6ea4c5e3f5dd05d","slug":"8.3"}},"MeasuredEvidence":{"metadata_version":""}},"Text":{"Collection":"guc","Key":"max_fsm_pages","SourceDatabase":"center","Version":"8.3","Locale":"en","Title":"max_fsm_pages","Summary":"Sets the maximum number of disk pages for which free space will be tracked in the shared free-space map. Six bytes of shared memory are consumed for each page slot. This setting must be at least 16 * max_fsm_relations. The default is chosen by initdb depending on the amount of available memory, and can range from 20k to 200k pages. This parameter can only be set at server start.","BodyHTML":"\u003cp\u003eSets the maximum number of disk pages for which free space will be tracked in the shared free-space map. Six bytes of shared memory are consumed for each page slot. This setting must be at least 16 * max_fsm_relations. The default is chosen by initdb depending on the amount of available memory, and can range from 20k to 200k pages. This parameter can only be set at server start.\u003c/p\u003e","SourceRevision":"english-manuals:077eda99e435b4041bede0216ed2920b9016cbf316486ed337fe38dae20b2766","ContentHash":"aad52d68d78d1f5d56a402572183a87ee41746d81fcb73bad2fa07e016ea3039","Payload":{"description":"Sets the maximum number of disk pages for which free space will be tracked in the shared free-space map. Six bytes of shared memory are consumed for each page slot. This setting must be at least 16 * max_fsm_relations. The default is chosen by initdb depending on the amount of available memory, and can range from 20k to 200k pages. This parameter can only be set at server start."}},"RequestedLocale":"zh-Hans","Fallback":true,"Versions":["7.4","8.0","8.1","8.2","8.3"],"Locales":["en"],"Signatures":null,"Spellings":null,"SQLState":null,"Evidence":null}