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The attached is the supporting documentation for the read-only GUC variable changes. Comments? |
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+ Shows the size of a disk block. It is determined by the value + of <literal>BLCKSZ</> when building the server. The default + value is 8192 bytes. Each data file (heap or index) is divided + into disk blocks which may be thought of as the unit of I/O. + A <productname>PostgreSQL</productname> buffer contains exactly + one disk block. A <productname>PostgreSQL</productname> disk page + is an abstraction layered on top of a disk block. Specifically, + while a disk block can be unformatted, a disk page is always a + formatted page. The <varname>shared_buffers</varname> setting is + influenced by <varname>block_size</varname>. See + <xref linkend="runtime-config-resource"> for information. |
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