[
https://issues.apache.org/jira/browse/LUCENE-7115?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15204286#comment-15204286
]
Mark Miller commented on LUCENE-7115:
-------------------------------------
+1 - makes sense to size for what's coming.
> Speed up FieldCache.CacheEntry toString by setting initial StringBuilder
> capacity
> ---------------------------------------------------------------------------------
>
> Key: LUCENE-7115
> URL: https://issues.apache.org/jira/browse/LUCENE-7115
> Project: Lucene - Core
> Issue Type: Improvement
> Components: core/search
> Reporter: Gregory Chanan
> Assignee: Gregory Chanan
> Attachments: LUCENE-7115.patch
>
>
> Solr can end up printing a lot of these objects via the JmxMonitoriedMap, see
> SOLR-8869 and SOLR-6747 as examples.
> From looking at some profiles, a lot of time and memory are spent resizing
> the StringBuilder, which doesn't set the initial capacity.
> On my cluster, the strings are a bit over 200 chars; I set the initial
> capacity to 250 and ran tests calling toString 1000 times. Tests
> consistently show 10-15% improvement when setting the initial capacity.
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
---------------------------------------------------------------------
To unsubscribe, e-mail: dev-unsubscr...@lucene.apache.org
For additional commands, e-mail: dev-h...@lucene.apache.org
