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Commitfd195a0

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Document CFS functions and GUCs
1 parent8c9990b commitfd195a0

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2 files changed

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2 files changed

+291
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‎doc/src/sgml/config.sgml

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@@ -1184,7 +1184,7 @@ include_dir 'conf.d'
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aliases for <literal>md5</> and <literal>plain</>, respectively. Setting
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this parameter to <literal>scram</> will encrypt the password with
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SCRAM-SHA-256.
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</para>
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</para>
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</listitem>
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</varlistentry>
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@@ -7489,6 +7489,105 @@ dynamic_library_path = 'C:\tools\postgresql;H:\my_project\lib;$libdir'
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</sect2>
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</sect1>
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<sect1 id="runtime-config-cfs">
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<title>Date Compression</title>
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<variablelist>
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<varlistentry id="guc-cfs-gc" xreflabel="cfs-gc">
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<term><varname>cfs_gc</varname> (<type>boolean</type>)
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<indexterm>
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<primary><varname>cfs_gc</> configuration parameter</primary>
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</indexterm>
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</term>
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<listitem>
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<para>
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Control background garbage collection of compressed pages.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry id="guc-cfs-encryption" xreflabel="cfs-encryption">
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<term><varname>cfs_encryption</varname> (<type>boolean</type>)
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<indexterm>
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<primary><varname>cfs_encryption</> configuration parameter</primary>
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</indexterm>
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</term>
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<listitem>
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<para>
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Control encryption of compressed pages.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry id="guc-cfs-gc-workers" xreflabel="cfs-gc-workers">
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<term><varname>cfs_gc_workers</varname> (<type>integer</type>)
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<indexterm>
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<primary><varname>cfs_gc_workers</> configuration parameter</primary>
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</indexterm>
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</term>
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<listitem>
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<para>
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Number of CFS background garbage collection workers.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry id="guc-cfs-level" xreflabel="cfs-level">
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<term><varname>cfs_gc_workers</varname> (<type>integer</type>)
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<indexterm>
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<primary><varname>cfs_level</> configuration parameter</primary>
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</indexterm>
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</term>
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<listitem>
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<para>
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CFS compression level: 0 - no compression, 1 - maximal speed,
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other possible values depend on the specific algorithm.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry id="guc-cfs-gc-threshold" xreflabel="cfs-gc-threshold">
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<term><varname>cfs_gc_threshold</varname> (<type>integer</type>)
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<indexterm>
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<primary><varname>cfs_gc_threshold</> configuration parameter</primary>
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</indexterm>
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</term>
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<listitem>
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<para>
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Minimum percent of garbage blocks in the file prior to garbage collection.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry id="guc-cfs-gc-period" xreflabel="cfs-gc-period">
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<term><varname>cfs_gc_period</varname> (<type>integer</type>)
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<indexterm>
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<primary><varname>cfs_gc_period</> configuration parameter</primary>
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</indexterm>
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</term>
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<listitem>
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<para>
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Time to sleep between GC runs in milliseconds.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry id="guc-cfs-gc-delay" xreflabel="cfs-gc-delay">
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<term><varname>cfs_gc_delay</varname> (<type>integer</type>)
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<indexterm>
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<primary><varname>cfs_gc_delay</> configuration parameter</primary>
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</indexterm>
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</term>
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<listitem>
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<para>
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Delay in milliseconds between files defragmentation.
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</para>
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</listitem>
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</varlistentry>
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</variablelist>
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</sect1>
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<sect1 id="runtime-config-error-handling">
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<title>Error Handling</title>
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