BlogJava-拾贝壳-最新评论http://www.blogjava.net/huabingl/CommentsRSS.aspx走过的路zh-cnMon, 18 Feb 2008 09:42:39 GMTMon, 18 Feb 2008 09:42:39 GMTcnblogsre: OpenLDAP快速上手http://www.blogjava.net/huabingl/archive/2007/07/18/65886.html#131125OKOKWed, 18 Jul 2007 09:45:00 GMThttp://www.blogjava.net/huabingl/archive/2007/07/18/65886.html#131125

OK 2007-07-18 17:45 发表评论
]]>re: OpenLDAP快速上手http://www.blogjava.net/huabingl/archive/2007/05/29/65886.html#120739yeyu710yeyu710Tue, 29 May 2007 09:49:00 GMThttp://www.blogjava.net/huabingl/archive/2007/05/29/65886.html#120739

yeyu710 2007-05-29 17:49 发表评论
]]>re: Mysql数据库使用技巧http://www.blogjava.net/huabingl/archive/2007/05/23/56429.html#119438bingebingeWed, 23 May 2007 09:03:00 GMThttp://www.blogjava.net/huabingl/archive/2007/05/23/56429.html#119438

binge 2007-05-23 17:03 发表评论
]]>re: Mysql数据库使用技巧http://www.blogjava.net/huabingl/archive/2007/05/06/56429.html#115576糖果糖果Sun, 06 May 2007 07:45:00 GMThttp://www.blogjava.net/huabingl/archive/2007/05/06/56429.html#115576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....

糖果 2007-05-06 15:45 发表评论
]]>re: Log4j/common log和各种服务器集成的问题http://www.blogjava.net/huabingl/archive/2007/03/26/67854.html#106313撒旦撒旦Mon, 26 Mar 2007 01:48:00 GMThttp://www.blogjava.net/huabingl/archive/2007/03/26/67854.html#106313

撒旦 2007-03-26 09:48 发表评论
]]>re: JUDE还是很好用的http://www.blogjava.net/huabingl/archive/2007/03/05/59652.html#101994ttttMon, 05 Mar 2007 13:29:00 GMThttp://www.blogjava.net/huabingl/archive/2007/03/05/59652.html#101994

tt 2007-03-05 21:29 发表评论
]]>re: OpenLDAP快速上手http://www.blogjava.net/huabingl/archive/2006/11/19/65886.html#82050李[匿名]李[匿名]Sun, 19 Nov 2006 08:40:00 GMThttp://www.blogjava.net/huabingl/archive/2006/11/19/65886.html#82050

李[匿名] 2006-11-19 16:40 发表评论
]]>re: OpenLDAP快速上手http://www.blogjava.net/huabingl/archive/2006/08/28/65886.html#66097bingebingeMon, 28 Aug 2006 01:35:00 GMThttp://www.blogjava.net/huabingl/archive/2006/08/28/65886.html#66097

binge 2006-08-28 09:35 发表评论
]]>re: OpenLDAP快速上手http://www.blogjava.net/huabingl/archive/2006/08/27/65886.html#65978笑嘻嘻系笑嘻嘻系Sun, 27 Aug 2006 03:05:00 GMThttp://www.blogjava.net/huabingl/archive/2006/08/27/65886.html#65978

笑嘻嘻系 2006-08-27 11:05 发表评论
]]>re: 一个简单的ThreadPool分析http://www.blogjava.net/huabingl/archive/2006/07/18/58451.html#58670fisherfisherMon, 17 Jul 2006 18:59:00 GMThttp://www.blogjava.net/huabingl/archive/2006/07/18/58451.html#58670
－－－－－－－－－－
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。
－－－－－－－－－－

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.

－－－－－－－－－－－－－－－－－

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

fisher 2006-07-18 02:59 发表评论
]]>