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Clarify documentation references to pg_stat_get_blocks_fetched and

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pg_stat_get_blocks_hit, per suggestion from Robert Haas.
This commit is contained in:
Bruce Momjian 2009-04-09 22:32:02 +00:00
parent f9578e179a
commit f4af189db3
1 changed files with 3 additions and 3 deletions
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6
doc/src/sgml/monitoring.sgml
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@ -1,4 +1,4 @@
<!-- $PostgreSQL: pgsql/doc/src/sgml/monitoring.sgml,v 1.66 2009/03/28 00:10:23 tgl Exp $ -->
<!-- $PostgreSQL: pgsql/doc/src/sgml/monitoring.sgml,v 1.67 2009/04/09 22:32:02 momjian Exp $ -->
<chapter id="monitoring">
<title>Monitoring Database Activity</title>
@ -924,8 +924,8 @@ postgres: <replaceable>user</> <replaceable>database</> <replaceable>host</> <re
<note>
<para>
<function>blocks_fetched</function> minus
<function>blocks_hit</function> gives the number of kernel
<function>pg_stat_get_blocks_fetched</function> minus
<function>pg_stat_get_blocks_hit</function> gives the number of kernel
<function>read()</> calls issued for the table, index, or
database; but the actual number of physical reads is usually
lower due to kernel-level buffering.