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WAL Buffer auto-tuning

Recorded source states and original language descriptions. Missing version evidence stays unknown.

The source snapshot records transitions for PostgreSQL 8.1–18. The historical matrix records independent cells for 7.4–18. Neither records support for PostgreSQL 19 or 20; newer versions remain unknown. These source claims are distinct from runtime measurements.

Performance

Description

wal_buffers is now auto-tuned by default based on the size of shared_buffers

Selected version: PostgreSQL 18

Yes

20191817161514131211109.69.59.49.39.29.19.08.48.38.28.18.07.4
UnknownUnknownYesYesYesYesYesYesYesYesYesYesYesYesYesYesYesNoNoNoNoNoUnknownUnknown

Compare versions

Original documentation links

Recorded legacy identifiers: 204

Complete source facts and provenance

yaml · center · 1dd22bf9a7f3ec325b894e2836fda535a25529f246a94dd41d6abbfe9997f7fd

{
  "Key": "wal-buffer-auto-tuning",
  "SourceKind": "yaml",
  "SourceDatabase": "center",
  "SourceTable": "featurematrix.yaml",
  "SourceKey": "WAL Buffer auto-tuning",
  "SourceHash": "1dd22bf9a7f3ec325b894e2836fda535a25529f246a94dd41d6abbfe9997f7fd",
  "Name": "WAL Buffer auto-tuning",
  "NameLocale": "en",
  "GroupKey": "performance",
  "GroupName": "Performance",
  "GroupLocale": "en",
  "Ordinal": 53,
  "GroupOrder": 5,
  "Facts": {
    "feature": {
      "description": "wal_buffers is now auto-tuned by default based on the size of shared_buffers",
      "name": "WAL Buffer auto-tuning",
      "versions": {
        "9.1": "Yes"
      }
    },
    "group": "Performance",
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      "min": 8.1
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    },
    {
      "Version": "11",
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      "EvidenceKind": "yaml-transition",
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    },
    {
      "Version": "12",
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    },
    {
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      "EvidenceKind": "yaml-default-no",
      "TransitionVersion": "",
      "Supported": false,
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      "Version": "8.2",
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    },
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      "TransitionVersion": "",
      "Supported": false,
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    },
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      "EvidenceKind": "yaml-default-no",
      "TransitionVersion": "",
      "Supported": false,
      "Original": "No"
    },
    {
      "Version": "9.0",
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      "EvidenceKind": "yaml-default-no",
      "TransitionVersion": "",
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    },
    {
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    },
    {
      "Version": "9.2",
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    },
    {
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      "Original": "Yes"
    },
    {
      "Version": "9.4",
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      "EvidenceKind": "yaml-transition",
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    },
    {
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      "State": "yes",
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      "Original": "Yes"
    }
  ],
  "Texts": [
    {
      "Locale": "en",
      "Title": "WAL Buffer auto-tuning",
      "BodyHTML": "\u003cp\u003ewal_buffers is now auto-tuned by default based on the size of shared_buffers\u003c/p\u003e\n",
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        }
      }
    },
    {
      "Locale": "zh-Hans",
      "Title": "WAL 缓冲区自动调优",
      "BodyHTML": "\u003cp\u003ewal_buffers 现在默认根据 shared_buffers 的大小自动调优\u003c/p\u003e\n",
      "SourceHash": "071091951021357a5f492adb04caed6febf4d315ac2626ca027a48dd8ec01d50",
      "ContentHash": "40c0c1e9d03492a0c01f69c86d89199f3efb6ccacf81056ca579040456b7474d",
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  ],
  "GroupTitles": {
    "en": "Performance",
    "zh-Hans": "性能"
  },
  "LegacyIDs": [
    "204"
  ]
}

Complete source data JSON