PPT-Tail Latency: Networking

The story thus far Tail latency is bad Causes Resource contention with background jobs Device failure Unevensplit of data between tasks Network congestion for reducers Ways to address tail latency. Kulkarni. . Ameya.s. . JongHwa. Song. Ashvin. Goal (University of Toronto). Charles . Krasic. (University of British Columbia). Jonathan Walpole (Portland State University) . Presence of Reordering. Myungjin. Lee. , Sharon Goldberg,. Ramana. . Rao. . Kompella. , . George Varghese. Trend toward low-latency networks. Low latency: one of important . metrics in . designing a network. By. Abhay Chaudhary. Database Architect (IBM India Pvt.Ltd.). MCTS\MCITP : SQL Server 2005 , SQL Server 2008, SQL Server 2008 BI ,MCTS: SQL Server 2008 DB Developer , OCP 9i . 9+ years of Database Management experience .. an update. November 2013. Norman Gee. Caveat. The spreadsheet calculation has never agreed with the measured numbers. Of course . Thilo’s. measurements are right and the spreadsheet is wrong. Need to understand the . Dataflow Architectures. Supervisor: Anthony Steed. Sebastian . Friston. EngD. VEIV. Why Latency?. The time between a user’s action, and the computer’s response to this . action. Must be low to maintain the sense that the world is responding to the user – key to enabling presence. Keqiang He, . Weite. Qin, . Qiwei. Zhang, . Wenfei. Wu. , . Junjie. Yang, Tian Pan, . Chengchen. Hu, Jiao Zhang, Brent Stephens, Aditya . Akella. , Ying Zhang. 1. Bandwidth Allocation in Clouds . goals for taxonomy session. survey sources of latency. categorise solutions. quantify benefits. consider deployment aspects. short-term & long-term applicability. common reference framework for discussions. A PAIN?. What do you think of when you hear ‘Networking’ or ‘Sales’?. My precious TIME is being wasted.. It won’t help us make our numbers.. I need to get some ‘real work’ done.. . . George . Prekas. , . Marios. . Kogias. , Edouard . Bugnion. 1. 2. Problem: Serve . μ. s-scale RPCs. Applications: KV-stores, In-memory DB. Datacenter environment:. Complex fan-out . –. fan-in patterns. Presenter: Tianyi Shan. 1. Organization. Motivation and background. The “SNOW” theorem. COPS-SNOW design and Rococo-SNOW design. Evaluation of the results. Takeaway and Discussion. 2. Motivation and background. Openstack. *. Yunhong Jiang . Yunhong.Jiang@intel.com. *Other names and brands may be claimed as the property of others.. Agenda. NFV and network . l. atency. Why network latency on NFV. How to achieve . With SDN, new vulnerabilities open up in the form of malware, ransomware and viral worms due to direct Internet access. This direct Internet access does not fall under the existing network security. Saehoon Kim. §. , . Yuxiong He. *. ,. . Seung-won Hwang. §. , . Sameh Elnikety. *. , . Seungjin Choi. §. §. *. Web Search Engine . Requirement. 2. Queries. High quality + Low latency. This talk focuses on how to achieve low latency without compromising the quality. CSE-291 (Cloud Computing), Fall 2016. Gregory . Kesden. Networking Recap. Storage Intro. Long Haul/Global Networking. Speed of light is limiting; Latency has a lower bound (.). Throughput is a cost, but not otherwise a limitation.