Обсуждение: pgsql: Document that effective cache size does not assume data remains

Document that effective cache size does not assume data remains in the
cache between queries.

Branch
------
master

Details
-------
http://git.postgresql.org/gitweb?p=postgresql.git;a=commitdiff;h=6c6e6f7fd3ffa984a202b910ef3237e26f9d3c2e

Modified Files
--------------
doc/src/sgml/config.sgml |    4 +++-
1 files changed, 3 insertions(+), 1 deletions(-)