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Postgres FD Implementation
Commit 6c6e6f7f authored by Bruce Momjian's avatar Bruce Momjian
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Document that effective cache size does not assume data remains in the 

cache between queries.
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doc/src/sgml/config.sgml
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...@@ -2424,7 +2424,9 @@ SET ENABLE_SEQSCAN TO OFF; ...@@ -2424,7 +2424,9 @@ SET ENABLE_SEQSCAN TO OFF;
space. This parameter has no effect on the size of shared space. This parameter has no effect on the size of shared
memory allocated by <productname>PostgreSQL</productname>, nor memory allocated by <productname>PostgreSQL</productname>, nor
does it reserve kernel disk cache; it is used only for estimation does it reserve kernel disk cache; it is used only for estimation
purposes. The default is 128 megabytes (<literal>128MB</>). purposes. The system also does not assume data remains in
the disk cache between queries. The default is 128 megabytes
(<literal>128MB</>).
</para> </para>
</listitem> </listitem>
</varlistentry> </varlistentry>
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