首页计算机书籍计算机语言《Java Performance The Definitive Guide》Scott Oaks
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《Java Performance The Definitive Guide》Scott Oaks

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《Java Performance The Definitive Guide》Scott Oaks
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Java Perfornce:The Definitive Guideby Scott OaksCopyright 2014 Scott Oaks.All rights reserved.Printed in the United States of AmericaPublished by O'Reilly Media,Inc.,1005 Gravenstein Highway North,Sebastopol,CA 95472.O'Reilly books y be purchased for educational,business,or sales promotional use.Online editions arealso available for mosttitles(://my.safaribooksonline).For more infortion,contact our corporate/institutional sales department:800-998-9938 or corporate@oreilly.Editor:Meghan BlanchetteIndexer:Judith McConvilleProduction Editor:Kristen BrownCover Designer:Karen MontgomeryCopyeditor:Becca FreedInterior Designer:David FutatoProofreader:Charles Roumeliotislllustrator:Rebecca DerestApril 2014:First EditionRevision History forthe First Edition:2014-04-09:First releaseSee ://oreilly/catalog/errata.csp?in=9781449358457 for release details.Nutshell Handbook,the Nutshell Handbooklogo,andthe O'Reillylogo are registered traderks ofO'ReillyMedia,Inc.Java Perfornce:The Definitive Guide,the ige of saiga antelopes,and related trade dress aretraderks of O'Reilly Media,Inc.Many of the designations used by nufacturers and sellers to distinguish their products are claimed astraderks.Where those designations appear in thiook,andO'Reilly Media,Inc.was aware ofa traderkclaim,the designations have been printed in caps or initial caps.While every precaution has been taken in the preparation of this book,the publisher and author assume noresponsibility for errors or omissions,or for dages resulting from the use of the infortion containedherein.ISB:978-1-449-35845-7[LSI]Table of ContentsPreface........................1.Introduction..............1A Brief Outline2Platforms and Conventions2JVM Tuning Flags4The Complete Perfornce Story5Write Better Algorithms5Write Less Code6Oh Go Ahead,Preturely Optimize7Look Elsewhere:The Database Is Always the Bottleneck8Optimize for the Common Case9Sumry102.An Approach to Perfornce Testing..........................................11Test a Real Application11Microbenchrks11Macrobenchrks16Mesobenchrks18Common Code Examples20Understand Throughput,Batching,and Response Time24Elapsed Time(Batch)Measurements24Throughput Measurements25Response Time Tests26Understand Variability29Test Early,Test Often33Sumry363.AJava Perfornce Toolbox.................................................37Operating System Tools and Analysis37
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