SystemTap 3.0 SystemTap Beginners Guide Introduction to SystemTap Edition 3.0   Red Hat, Inc. Don Domingo Engineering Services and Operations Content Services ddomingo@redhat.com William Cohen Engineering Services and Operations Performance Tools wco…

Beginners Guide To Learn Dimension Reduction Techniques Introduction Brevity is the soul of wit This powerful quote by William Shakespeare applies well to techniques used in data science & analytics as well. Intrigued ? Allow me to prove it using a s…

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Web Development Front End Development Back End Development…

Assert, this allows the test to check if the element is on the page, if it is not available then the test will stop on the step that failed. Verify, allows the test to check the element is on the page, but if it isn't then the test will carry on exec…

http://www.codedigest.com/posts/1/what-is-owin-a-beginners-guide http://owin.org/html/spec/owin-1.0.1.html Introduction If you look at the current web stacks in open-source, it is fast evolving with wide-range of capabilities getting added day by day…

按照SystemTap Beginners Guide的Installation and Setup部分安装了SystemTap,没想到竟然还有点曲折,在这里纪录一下. 环境 Linux发行版本:CentOS Linux release 7.4.1708 (Core) 内核版本:3.10.0-693.2.2.el7.x86_64 uname -a: Linux hostname 3.10.0-693.2.2.el7.x86_64 #1 SMP Tue Sep 12 22:26:13 UTC 20…

inux and UNIX® like operating systems commonly use signals to communicate between processes. The use of the command line kill is widely known. WebSphere Application Servers on Linux and UNIX by default respond to kill -3 by producing a javacore, and…

Posted by William Cohen on March 10, 2014 All modern processors use page-based mechanisms to translate the user-space processes virtual addresses into physical addresses for RAM. The pages are commonly 4KB in size and the processor can hold a limited…

作者:王璐璐 | 旷视 MegEngine 架构师 一. 背景 在 MegEngine imperative runtime 的早期开发中,我们面临着一些的性能优化问题.除了一些已知需要重构的地方(早期设计时为了开发效率而牺牲性能的妥协),还存在一些未知的性能问题需要用 profiler 进行观测和分析才能发现.MegEngine 的 imperative runtime 是一个由 Python 和 C/C++ 编写的模块,对于这类程序,各种 profiler 多到令人眼花缭乱.在调研各种 pr…