From 54e86875b84cd00492ec403c67339d1520117c50 Mon Sep 17 00:00:00 2001
From: Ludovic Poitou <ludovic.poitou@forgerock.com>
Date: Thu, 08 Dec 2011 11:02:40 +0000
Subject: [PATCH] Fix for OPENDJ-379. Improve description for the db-evictor-nodes-per-scan configuration parameter.
---
opends/src/admin/defn/org/opends/server/admin/std/LocalDBBackendConfiguration.xml | 14 +++++++++-----
1 files changed, 9 insertions(+), 5 deletions(-)
diff --git a/opends/src/admin/defn/org/opends/server/admin/std/LocalDBBackendConfiguration.xml b/opends/src/admin/defn/org/opends/server/admin/std/LocalDBBackendConfiguration.xml
index ff6683f..a114369 100644
--- a/opends/src/admin/defn/org/opends/server/admin/std/LocalDBBackendConfiguration.xml
+++ b/opends/src/admin/defn/org/opends/server/admin/std/LocalDBBackendConfiguration.xml
@@ -537,13 +537,17 @@
restarted. It is recommended that you also change this property
when you set db-evictor-lru-only to false. This setting controls
the number of Btree nodes that are considered, or sampled, each
- time a node is evicted. A setting of 100 often produces good
+ time a node is evicted. A setting of 10 often produces good
results, but this may vary from application to application. The
larger the nodes per scan, the more accurate the algorithm.
- However, setting it too high is detrimental; the need to consider
- larger numbers of nodes for each eviction may delay the completion
- of a given database operation, which will impact the response time
- of the application thread.
+ However, don't set it too high. When considering larger numbers of
+ nodes for each eviction, the evictor may delay the completion of a
+ given database operation, which impacts the response time of the
+ application thread. In JE 4.1 and later, setting this value too high
+ in an application that is largely CPU bound can reduce the
+ effectiveness of cache eviction. It's best to start with the default
+ value, and increase it gradually to see if it is beneficial for your
+ application.
</adm:description>
<adm:requires-admin-action>
<adm:component-restart />
--
Gitblit v1.10.0