how to monitor? use jprofile?
From: Sascha Janz
Date: 2014-08-05 22:36
To: java-user@lucene.apache.org
Subject: Performance StringCoding.decode
hi,
i want to speed up our search performance. so i run test and monitor them with
java mission control.
the analysis showed that one hotspot is
sun.nio.cs.UTF_8$Decoder.decode(byte[], int, int, char[])
- java.lang.StringCoding.decode(Charset, byte[], int, int)
- java.lang.String.<init>(byte[], int, int, Charset)
-org.apache.lucene.codecs.compressing.CompressingStoredFieldsReader.readField(DataInput,
StoredFieldVisitor, FieldInfo, int)
-org.apache.lucene.codecs.compressing.CompressingStoredFieldsReader.visitDocument(int,
StoredFieldVisitor)
-org.apache.lucene.index.SegmentReader.document(int, StoredFieldVisitor)
-org.apache.lucene.index.IndexReader.document(int, Set)
we use jdk 1.7.55 and lucene 4.9.0.
is there a chance to speed this up? or do some changes in lucene
IndexWriterConfig, e.g. use an other codec?
we use the default values of IndexWriterConfig
regards
sascha
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