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原创 docker no space left on device问题解决

昨天开始build image一直失败,开始以为是VPN网络问题。但看报错是在解压下载的layer时,磁盘空间不足。不应该啊,鄙人MacBook这点磁盘还是有的。。。借助万能的stackoverflow,找到条docker清理的核弹命令。运行Yes之后,清理了各种不用container, image,cache,volume,,再次pull image就成功了。> docker system prune --volumes顺势又进minikube清理一把,释放了35GB空间。这是强迫症患者

2020-10-15 10:01:13 784

原创 PerfMon日志浏览工具

做项目经常用Windows PerfMon记录资源使用情况,写了个工具分析汇总数据。用法把Log存成CSV格式,然后用工具打开。微盘:http://vdisk.weibo.com/s/Agg-_代码:https://github.com/zifengyu/PerfLogViewer最后加的拖拽功能好像有bug,添加第二个文件会出错,重新clear以后就好了

2013-05-05 22:47:50 796

原创 Java内存泄漏问题的诊断

贴个一年前写的文章。为投稿写的,骗了个小奖。现在想想,这方法还是有几点不足:1. 如果有多个类同时引用,单从统计上,无法判断具体哪个才是问题节点。譬如A,B两个类都引用C,可以发现C中存在泄漏。但是无法判断是A或者B出了错,需要结合其他分析,譬如从dump中计算边的数量。(本来想写个程序的,后来发现没有索引,直接query遍历dump时间开销太大,后来忙了就懒得去弄了。。。)2

2013-04-08 13:46:25 1106

原创 一个SharePoint性能案例的学习

最近一直在做SharePoint的项目,终于下定决心把2010-10-14 Amy转的一片文章看了遍。在信箱里已经Follow Up了两年多了。。。终于干掉了FYI. A VERY interesting performance study report on SharePoint. Quite some tuning guidelines in the report, notconstr

2013-04-04 23:27:44 659

原创 SharePoint 2010中Event 10016错误

Longevity test中,发现MOSS虚机里Event Viewer里有大量Event 10016错误。网上搜了下,是因为DCOM权限不够。但是在Windows 2008 R2,Component Services工具中,打开相应的IIS WAMREG却不能修改security内容(灰色)。 最终找到这篇,关键是修改前先要更改注册表项的修改权限,然后在打开Component Serv

2013-03-02 18:20:59 342

软件测试之魂:核心测试设计精解

作者: 肖利琼 出版社:电子工业出版社 《软件测试之魂:核心测试设计精解(第2版)》以测试设计为主线,首先介绍了软件测试行业过去十多年的发展变化——如今,软件测试日益受到世界重视,已展现了朝阳行业的端倪。如何把握测试技术,把测试工作做得精透,成为测试行业的佼佼者,也是很多读者朋友关心的话题。本书接下来明确了测试的目标,介绍了测试设计的各个环节,包括测试架构的设计、测试需求分析与测试策略制定、测试方案的设计、用例的设计、测试执行流程设计、测试输出的管理设计、测试过程的控制方法设计等。最后,作者以追逐软测之理念进行延展,旨在帮助读者理解并站在测试工作之上看测试,如何超越自我进行测试创新,为走出一条属于自己的测试精华之路提供指引。 《软件测试之魂:核心测试设计精解(第2版)》是作者从事一线测试工作13年来的测试经验与智慧结晶,适合对软件测试有一定了解,特别是有一定实际测试经验的测试工程师。同时,本书也可以作为高校、软件测试专业培训机构的参考教材,让学生在学习理论知识的同时,学习企业中的工程实践案例,有针对性地认识与把握测试的核心技术,以增强自身的就业竞争力。

2014-06-18

Pro JavaScript Performance Monitoring and Visualization

http://book.douban.com/subject/20109052/ 作者: Barker, Tom 出版年: 2012-10 页数: 207 ISBN: 9781430247494 Performance is a hugely important area of web development. If your site runs slowly, users are going to leave, and the problem only grows as your site gets more popular. Pro JavaScript Performance gives you the tools you need to keep your sites smooth and responsive no matter how many users you have. Best practices are changing or becoming redefined continually because of changes and optimizations at the interpreter level, and differences in system configuration, and network speeds. This is exacerbated by the quickened release schedule that most browsers have adopted. Just as important as following best practices is the ability to measure your own performance, so that you can adjust as times change, and so that you can note the subtle nuances in your own code and define your own best practices by your own observations. This book gives you the tools to observe and track the performance of your web applications over time from multiple perspectives, so that you are always aware of, and can fix, all aspects of your performance. What you'll learn * Describes the different aspects of performance, and explores the tools for quantifying and improving performance * Provides tactical solutions for creating tools to measure the performance of your own web applications * Learn to apply performance best practices, and how to quantify your results Who this book is for Pro JavaScript Performance is written for advanced JavaScript users and web developers. You will need a strong understanding of JavaScript to get the most from this book. Table of Contents * What Is Performance? * Tools and Technology to Measure and Impact Performance * WPTRunner--Automated Performance Monitoring and Visualization with WebPagetest * perfLogger--JavaScript Benchmarking and Logging * Looking Forward, A Standard for Performance * Web Performance Optimizations * Runtime Performance * Balancing Performance with Software Engineering Best Practices and Running in Production

2013-04-03

Professional IIS 7

Professional IIS 7 Ken Schaefer Jeff Cochran Scott Forsyth

2013-03-05

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