2007-10-10

Spring 2.5 Perfomance Improvements 200% 直逼 Guice

关键字: Perfomance Improvement 性能
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
评论
lijun96 2007-11-27
spring2.5有好几个类是jdk6的！！！！！！
hantsy 2007-11-27
很多还在用1.2.x。。。那个性能测试很片面，那篇blog下面都Bob Lee的回复。。。
Posted by Bob Lee on October 09, 2007 at 01:08 PM EDT #
@Bob... I used your test that you provide at (http://google-guice.googlecode.com/svn/trunk/test/com/google/inject/PerformanceComparison.java) and added .in(Scopes.SINGLETON) to the three beans. I assume that's the correct way to configure singletons in Guice 1.0
manmoon 2007-10-25
哎，框架热潮是一波赶一波阿，最终会一切回归自然的。
e3002 2007-10-25
老不用。思想都快忘了！哈哈
kenees 2007-10-18
我TMD的是彻底落伍了，呵呵，跟不上节奏，只有思想在了
pilot 2007-10-18
我们用的版本我定的 2.0.7
zdonking 2007-10-16
我们1.2.6
JerryZheng 2007-10-15
我们公司还在用1.2.3。。。
yueguangyuan 2007-10-15
Spring 2.5 ……
果然是开源软件，升级有够快， 跟着链接的信息跟进去看Juergen大叔的博客，原来是2.1转过去的
但是公司还在用Spring-on-wls1.2.5 升级无望，只能看着众多新特性眼馋，不知道大家在实际项目中怎么用，我想用Spring1.2.8的应该不在少数吧？
Allen 2007-10-14
这个改进对于那些系统需要频繁而且大量进行IOC动作的系统来说是比较有意义的；而对于那些同一时刻总共不会超过1000个注入实例的系统来说，效果就不是很明显了。

Spring在IOC这个基础项目上的努力还是令人可喜的，它全面降低J2EE项目开发难度的事实正在得到不断巩固。
ecsoftcn 2007-10-12
版本跳的快，升级麻烦。
DigitalSonic 2007-10-11
版本号跳好快，一下2.5了，期待ing
jimmy.shine 2007-10-11
Spring2.5目前仍然没有开放下载吧!
Tin 2007-10-11
YuLimin 写道
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


通过新特性提升性能是可喜的，说明Spring并没有背包袱。
但是对于IoC容器来说，这个性能提升往往没什么实际意义……因为虽说是10x甚至100x的差距，但是实际的单次注入性能差距从时间消耗上来说非常小……对应用来说得不到什么实际好处。
我觉得学习Spring性能改进的方法可能对我们的应用比较有意义。
kyo100900 2007-10-10
一直看好Spring，2.5期待中!!!!!!!!
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