i used JMC ( Java Mission Control) from jdk7 u40+
see here http://www.oracle.com/technetwork/java/javase/2col/jmc-relnotes-2004763.html Gesendet: Dienstag, 05. August 2014 um 17:41 Uhr Von: "d...@neusoft.com" <d...@neusoft.com> An: "java-user@lucene.apache.org" <java-user@lucene.apache.org> Betreff: Re: Performance StringCoding.decode 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 --------------------------------------------------------------------- To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org For additional commands, e-mail: java-user-h...@lucene.apache.org --------------------------------------------------------------------------------------------------- Confidentiality Notice: The information contained in this e-mail and any accompanying attachment(s) is intended only for the use of the intended recipient and may be confidential and/or privileged of Neusoft Corporation, its subsidiaries and/or its affiliates. If any reader of this communication is not the intended recipient, unauthorized use, forwarding, printing, storing, disclosure or copying is strictly prohibited, and may be unlawful.If you have received this communication in error,please immediately notify the sender by return e-mail, and delete the original message and all copies from your system. Thank you. --------------------------------------------------------------------------------------------------- --------------------------------------------------------------------- To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org For additional commands, e-mail: java-user-h...@lucene.apache.org
