wal_writer_flush_after
Specifies how often the WAL writer flushes WAL, in volume terms. If the last flush happened less than wal_writer_delay ago and less than wal_writer_flush_after worth of WAL has been produced since, then WAL is only written to the operating system, not flushed to disk. If wal_writer_flush_after is set to 0 then WAL data is always flushed immediately. If this value is specified without units, it is taken as WAL blocks, that is XLOG_BLCKSZ bytes, typically 8kB. The default is 1MB. This parameter can only be set in the postgresql.conf file or on the server command line.
英文手册覆盖始于 PostgreSQL 7.4. 来源历史与运行验证各自保留独立版本边界。
当前阅读 PG 18·选择有来源记录的版本
此版本暂无所选语言的定义，以下显示原始英文内容。
- boot val
- 128
- category
- Write-Ahead Log / Settings
- context
- sighup
- documented
- true
- enumvals
- 未知
- extra desc
- 未知
- lang
- en
- max val
- 2147483647
- metadata version
- 18
- min val
- 0
- name
- wal_writer_flush_after
- short desc
- Amount of WAL written out by WAL writer that triggers a flush.
- source
- pg-settings-source-snapshot
- unit
- 8kB
- vartype
- integer
版本定义 PG 18
Specifies how often the WAL writer flushes WAL, in volume terms. If the last flush happened less than wal_writer_delay ago and less than wal_writer_flush_after worth of WAL has been produced since, then WAL is only written to the operating system, not flushed to disk. If wal_writer_flush_after is set to 0 then WAL data is always flushed immediately. If this value is specified without units, it is taken as WAL blocks, that is XLOG_BLCKSZ bytes, typically 8kB. The default is 1MB. This parameter can only be set in the postgresql.conf file or on the server command line.
比较版本
来源引用
定义来源
center · PostgreSQL 18 · english-manuals:9be7df02ae9b86756db021f8a82d459bb56d00444f9ea25c3e0100ccdc02419c
正文语言: en · english-manuals:9be7df02ae9b86756db021f8a82d459bb56d00444f9ea25c3e0100ccdc02419c