By Ilya Grigorik on June 23, 2009 Measuring and optimizing IO performance is somewhat of a black art: the tools are there, the resources and discussions are plenty, but it is also incredibly easy to get lost in the forest. I speak from recent experie…

APPLIES TO: Oracle Product Hub - Version 12.1.1 to 12.1.1 [Release 12.1] Oracle Inventory Management - Version 12.1.1 to 12.1.1 [Release 12.1] Oracle Item Master - Version 12.0.6 to 12.0.6 [Release 12] Information in this document applies to any plat…

BACKGROUND OF THE INVENTION The use of a cache memory with a processor facilitates the reduction of memory access time. The fundamental idea of cache organization is that by keeping the most frequently accessed instructions and data in the fast cache…

Improving Web App Performance With the Chrome DevTools Timeline and Profiles We all want to create high performance web applications. As our apps get more complex, we may want to support rich animations and that ideal 60 frames a second that keep our…

http://www.onjava.com/pub/a/onjava/2001/05/30/optimization.htmlComparing the performance of LinkedLists and ArrayLists (and Vectors) (Page last updated May 2001, Added 2001-06-18, Author Jack Shirazi, Publisher OnJava). Tips: ArrayList is faster than…

Appendices Published: April 27, 2005 On This Page Appendix A: SQL Server for Oracle Professionals Appendix B: Getting the Best Out of SQL Server 2000 and Windows Appendix C: Baselining Appendix D: Installing Common Drivers and Applications Installing…

[it-ebooks]电子书列表   [2014]: Learning Objective-C by Developing iPhone Games || Leverage Xcode and Objective-C to develop iPhone games http://it-ebooks.info/book/3544/Learning Web App Development || Build Quickly with Proven JavaScript Techniques http:…

背景 最近一段给xx做项目,这边最头疼的事情就是数据库入库瓶颈问题. 环境 服务器环境:虚拟机,分配32CPU,磁盘1.4T,4T,5T,6T几台服务器不等同(转速都是7200r),内存64G. 排查步骤 排查一:数据库恢复模式为简单模式,数据库和tempdb的初始大小.数据库文件初始化大小100G,日志文件初始化大小50G,两个文件都是自动增长(按10%):tempdb初始化大小10G*4个文件,日志5G*4个文件,两个文件都是自动增长(按10%),分布在两个磁盘中(但看了这篇文章后,有点傻眼…

今年一直关注log4j 2,但至今还没有出正式版.等不及了,今天正式向大家介绍一下log4j的升级框架,log4j 2. log4j,相信大家都熟悉,至今对java影响最大的logging系统,至今仍有很多系统在使用log4j,但毕竟这个版本出的太早,Java都从1.2到7.0了,log4j怎么总是在1.2的版本呢? 不得承认,写log4j的那个人确实很牛,之后又写了slf4j和logback作为log4j 1.x的替代品.但是,最终,原作者可能发现,还是log4j的江山大,所以,最终决定重写l…

Model-Agnostic Meta-Learning for Fast Adaptation of Deep Networks ICML 2017 Paper:https://arxiv.org/pdf/1703.03400.pdf Code for the regression and supervised experiments:https://github.com/cbfinn/maml Code for the RL experiments:https://github.com/cb…