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原创新闻 Spring 2.5 性能提升200% 直逼 Guice

2007-10-10 19:54 by 正式记者 YuLimin 评论(3) 有11501人浏览
Spring prototype

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并发性能提升的原因之一是使用了 ConcurrentHashMap，原来的 Collections.synchronized(new HashMap()) 存在同步锁的性能瓶颈；

如果你是用JDK 5.0或以上的版本，就可以直接得到这个性能的提升的好处了。

或者下载 Emory concurrent utilities backport 加到 CLASSPATH 中
http://dcl.mathcs.emory.edu/util/backport-util-concurrent/

当然还要努力，越快越好啦。。。

引用

The upcoming Spring Framework version 2.5 will bring a 200% improvement for concurrent access over Spring 2.0.*. I used Crazy Bob's Semi Useless Benchmark ™ as a starting point. I fiddled with the code slightly to change the default behavior from "prototype" to "singleton", and I saw that spring 2.5 was faster than Guice for singletons.

Here are some benchmarks (there is variability based on the runs)

    * Spring 2.0 vs. guice 1.0:
          o Prototype: Single thread: Spring is 50-150X slower. Concurrent: Spring is 50-150X slower.
          o Singleton: Single thread: Spring 3X slower - 2X faster. Concurrent: Spring is 5-10X slower
    * Spring 2.0.6 vs. guice 1.0:
          o Prototype: Single thread: Spring is ~10X slower. Concurrent: Spring is 5X slower.
          o Singleton: Single thread: Spring 2X slower - 2X faster. Concurrent: Spring:Guice ~2:3
    * Spring 2.14m vs. guice 1.0:
          o Prototype: Single thread: Spring is 5-7X slower. Concurrent: Spring is 3-4X slower.
          o Singleton: Single thread: neck and neck. Concurrent: Spring is 1-1.5X faster
    * guice 1.0:
          o Prototype: Single thread vs. Concurrent: Concurrent might be a bit slower than single threaded
          o Singleton: Single thread vs. Concurrent: Concurrent is quite a bit faster than single threaded


详细请见这里
http://www.jroller.com/Solomon/entry/spring_2_5_perfomance_improvements
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评论 共 3 条 请登录后发表评论
3 楼 dacoolbaby 2012-09-03 17:52
_缘如此 写道
,IT行业还是比较喜欢稳定的，到现在好多公司还是用JDK1.4版本的，为什么不能在1.4上面提升呢？

因为改进是基于JVM的。。有很多底层的优化。。
还是用1.5好。。
2 楼 _缘如此 2011-03-29 13:30
,IT行业还是比较喜欢稳定的，到现在好多公司还是用JDK1.4版本的，为什么不能在1.4上面提升呢？
1 楼 wangdi 2007-10-16 20:18
呵呵，，好事情，，

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