From dfdd63d0959b574c7d0c95b84279dce09f8f0f96 Mon Sep 17 00:00:00 2001
From: Tatsuo Ishii <ishii@sraoss.co.jp>
Date: Sat, 16 Jan 2021 19:15:57 +0900
Subject: [PATCH] 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.
---
 doc.ja/src/sgml/performance.sgml | 4 ++++
 doc/src/sgml/performance.sgml    | 7 +++++++
 2 files changed, 11 insertions(+)

diff --git a/doc.ja/src/sgml/performance.sgml b/doc.ja/src/sgml/performance.sgml
index 50e3fa805..461d60ef7 100644
--- a/doc.ja/src/sgml/performance.sgml
+++ b/doc.ja/src/sgml/performance.sgml
@@ -48,6 +48,10 @@
       必要メモリ量に関しては<xref linkend="guc-memqcache-total-size">と<xref linkend="guc-memqcache-max-num-cache">を参照してください。
     </para>
 
+    <para>
+     ただし<productname>Pgpool-II</productname> 4.1移行では、インメモリクエリキャッシュが有効になっていなくても、<xref linkend="guc-enable-shared-relcache">が有効なら(デフォルトで有効です)、追加で64MBの共有メモリを使用することに注意してください。
+    </para>
+
    </sect3>
    
    <sect3 id="process-memory-requirement">
diff --git a/doc/src/sgml/performance.sgml b/doc/src/sgml/performance.sgml
index 3f7594e78..3f192d6e5 100644
--- a/doc/src/sgml/performance.sgml
+++ b/doc/src/sgml/performance.sgml
@@ -61,6 +61,13 @@
 	size.
     </para>
 
+    <para>
+     Note that, however, in <productname>Pgpool-II</productname> 4.1
+     or after, even if the in memory query cache is not enabled, it
+     consumes additional 64MB of shared memory, if <xref
+     linkend="guc-enable-shared-relcache"> is enabled (it is enabled
+     by default).
+    </para>
    </sect3>
    
    <sect3 id="process-memory-requirement">
-- 
2.39.5