[pgpool-committers: 7410] pgpool: Doc: add explanation about the shared memory required by shared

[Tatsuo Ishii]

Doc: add explanation about the shared memory required by shared relation cache.

Add description to "Memory requirement" section so that in Pgpool-II
4.1 and after require additional shared memory for shared relation
cache.

Branch
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V4_2_STABLE

Details
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https://git.postgresql.org/gitweb?p=pgpool2.git;a=commitdiff;h=dfdd63d0959b574c7d0c95b84279dce09f8f0f96

Modified Files
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doc.ja/src/sgml/performance.sgml | 4 ++++
doc/src/sgml/performance.sgml    | 7 +++++++
2 files changed, 11 insertions(+)