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| author | Bruce Momjian <bruce@momjian.us> | 2011-02-01 15:23:35 -0500 |
|---|---|---|
| committer | Bruce Momjian <bruce@momjian.us> | 2011-02-01 15:23:35 -0500 |
| commit | 6c6e6f7fd3ffa984a202b910ef3237e26f9d3c2e (patch) | |
| tree | 89cf8f6c8cf3d94d986ca4c4954f339040d88d80 /doc/src | |
| parent | e8cdc238cfa3fda4185fe6a9826dbdf0a107f789 (diff) | |
| download | postgresql-6c6e6f7fd3ffa984a202b910ef3237e26f9d3c2e.tar.gz postgresql-6c6e6f7fd3ffa984a202b910ef3237e26f9d3c2e.zip | |
Document that effective cache size does not assume data remains in the
cache between queries.
Diffstat (limited to 'doc/src')
| -rw-r--r-- | doc/src/sgml/config.sgml | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/doc/src/sgml/config.sgml b/doc/src/sgml/config.sgml index 8bdc57febcc..3a0f755b080 100644 --- a/doc/src/sgml/config.sgml +++ b/doc/src/sgml/config.sgml @@ -2424,7 +2424,9 @@ SET ENABLE_SEQSCAN TO OFF; space. This parameter has no effect on the size of shared memory allocated by <productname>PostgreSQL</productname>, nor 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> </listitem> </varlistentry> |