re: OpenLDAP快速上手 sss 2008-12-03 18:03
学习·····,有个感性认识
re: 关于异常Exception 樊志程 2008-09-02 11:31
我上大话西游2 每次都是说你当前环境保存信息不成功
re: OpenLDAP快速上手 chenpengyi 2008-04-03 09:58
其实讲解LDIF文件不如讲解schema文件来的直接。
感觉如果能从一个schema例子来讲解会比直接讲LDIF好。
re: OpenLDAP快速上手 OK 2007-07-18 17:45
感觉不错,刚开始琢磨这个东西。。哎,学习中。。。。。
re: OpenLDAP快速上手 yeyu710 2007-05-29 17:49
很难找到windows版本的啊,找到的也是版本太低了!不知道楼主的是那个版本的,我的是2.2.29的,但我想找一个版本高一点的。我的QQ:76988599
re: Mysql数据库使用技巧 binge 2007-05-23 17:03
我一直都在用sqlyog,hehe.工具软件应该好下吧,自己多找找吧
re: Mysql数据库使用技巧 糖果 2007-05-06 15:45
大侠,救命~
有没有MySQL Control Center ( mysqlcc-0.9.4-win32.zip ) 的下载地址?找了好多都打不开....
re: JUDE还是很好用的 tt 2007-03-05 21:29
可是不能改变字体。大侠可以指教吗?我的QQ289720228
re: OpenLDAP快速上手 李[匿名] 2006-11-19 16:40
Softerra LDAP Browser 2.6 哪有啊?
re: OpenLDAP快速上手 binge 2006-08-28 09:35
刚学啊,感性认识先.望楼上提点一下需要深入的纲要
re: OpenLDAP快速上手 笑嘻嘻系 2006-08-27 11:05
不深入
re: 一个简单的ThreadPool分析 fisher 2006-07-18 02:59
纠正一个明显的错误:
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关于为什么要采用ThreadPool,原文已经提到了:创建一个线程是需要开销的,如果线程数量过大的话,cpu就会浪费很大的精力做线程切换。
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线程池的目的不是reuse,而是overload shield.这是初涉多线程编程的人经常会犯的概念性错误,也是对于线程池功能最常见的误解
况且,你指出的原文已经说的很明白了,你似乎没有理解原文的意思
原文:
Why a Thread Pool?
When programming the crawler in the previous section, a problem that would soon present itself is the number of threads to use. A crawler may have to visit tens of thousands of pages, and you certainly do not want to create tens of thousands of threads because each thread imposes a certain amount of overhead. If the number of threads grows too large, the computer will be spending all of its time switching between threads, rather than just executing them.
To solve this problem, you must create a thread pool. The thread pool is given some fixed number of threads to use. The thread pool will assign its tasks to each of these threads. As the threads finish with old tasks, new ones are assigned. This causes the program to use a fixed number of threads, not to be continually creating new threads.
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再说,这篇文章太老了,说java没有提供内建的线程池实现,java5.0已经提供了内建的线程池