原文:
http://java.dzone.com/reviews/java-performance
这个是老外写的关于《Java Performance》的书评,以前对这个东西也有所接触和了解, 最近略有实战, 希望有空能翻翻这本书。
本书涵盖了JVM调优(tuning), 测试(benchmarking)和剖析(profiling)的方方面面. 其中开篇第一章"策略, 步骤以及方法论"非常高屋建瓴的告诉你如何在开发过程中处理性能调优的问题.
性能调优是一项艺术. 知道如何使用调优工具是一回事, 而能对拿到的相关数据进行分析是另外一回事. 这本书就是用来让你的程序更好的运行. 通过这本书你可以知道如何从JVM和OS级别来找出应用的性能问题. 担心CPU的消耗, 不知道如何在应用中选择正确的数据结构, 这些问题你将在第六章得到答案.
也许"手把手教你调优JVM(Tuning the JVM, Step by Step)" 这章是本书的精华. 因为很多开发者的调优都是对JVM的各种参数反复的进行调整. 理想情况下, 一般都能解决系统的性能问题. 但是大多数是"知其然不知其所以然", 即大家真的能理解这些参数的意义吗? 我想也未必, 但是你将从这章中得到大部分的答案. 同时能全面的了解垃圾收集(GC)的过程也将有助于你真正理解JVM调优的本质.
这本书同时也涵盖了如何对java程序进行测试, 并帮助你如何找出Java EE应用的性能问题.
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