In your childhood, do you crazy for collecting the beautiful cards in the snacks? They said that, for example, if you collect all the 108 people in the famous novel Water Margin, you will win an amazing award. As a smart boy, you notice that to win t…

Refer to http://www.oracle.com/technetwork/tutorials/tutorials-1876574.html for detail. 一些内容复制到这儿 The G1 Garbage Collector The Garbage-First (G1) collector is a server-style garbage collector, targeted for multi-processor machines with large memories…

题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=2602 Bone Collector Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 54132    Accepted Submission(s): 22670 Problem Description Many years ago , in…

Jmeter由于是开源工具,所以目前有很多插件可以供使用,最简单的方法是先把Plugin Manager安装了 下载地址:https://jmeter-plugins.org/wiki/PluginsManager/ 解压放到lib/ext目录下后,启动Jmeter即可在工具栏选项中看到,然后选择一些你需要的插件进行安装 这里介绍一款比较有用的插件PerfMon Metrics Collector,用来监控CPU,memory等系统资源 注意到蓝色的链接,可以打开该插件的帮助,仔细看就会发现,你…

在网上找了很多,都不是我想要的,后来发现是我在springaop注解的时候 写错了类名导致的这个问题 @Pointcut("execution(* com.xxx.collector.service.impl.XxxServiceImpl.add(..))") public void pointcutExpression() { } 如上所示的部分写错了导致的 第一次用aop.... 希望可以帮到跟我一样的第一次使用aop出现这种错误的人…

Bone Collector II Time Limit: 5000/2000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 4229    Accepted Submission(s): 2205 Problem Description The title of this problem is familiar,isn't it?yeah,if you had took par…

容斥原理+状压 Card Collector Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 1940    Accepted Submission(s): 907Special Judge Problem Description In your childhood, do you crazy for collecting the bea…

Problem Description Many years ago , in Teddy’s hometown there was a man who was called “Bone Collector”. This man like to collect varies of bones , such as dog’s , cow’s , also he went to the grave …The bone collector had a big bag with a volume of…

题目链接:http://acm.hust.edu.cn/vjudge/contest/view.action?cid=87125#problem/N 题目: Description Many years ago , in Teddy’s hometown there was a man who was called “Bone Collector”. This man like to collect varies of bones , such as dog’s , cow’s , also h…

有些资料中,为区别parallel collector ,将应用与gc并发成为并行,在接下来的文章中,仍称为并发. -XX:useConcMarkSweepGC,可以用于minor gc和major gc cms在gc时,也会有两次短暂停,垃圾收集线程与应用线程并发 并发失败: 如果无法及时清理内存和分配内存,也会暂停整个应用. OutOfMemoryException: 如果超过98%的时间用来gc,但每次恢复内存不足2%,会抛出该异常.与parallel collector不同, 98%时间…