Welcome!

Related Topics: SDN Journal, Java IoT, Microservices Expo

SDN Journal: Blog Feed Post

Trickle Up Performance

New TCP algorithms and protocols in a platform net improved performance for apps

The original RFC for TCP (793) was written in September of 1981. Let's pause for a moment and reflect on that date.

When TCP was introduced applications on "smart" devices was relegated to science fiction and the use of the Internet by your average consumer was still more than two decades away.

Yet TCP remains, like IP, uncontested as "the" transport protocol of ... everything.

New application architectures, networks, and devices all introduce challenges with respect to how TCP behaves. Over the years it's become necessary to tweak the protocol with new algorithms designed to address everything from congestion control to window size control to key management for the TCP MD5 signature option to header compression. There are, in fact, over 100 (that's where I stopped counting) TCP-related RFCs on the digital books.

The most recent addition is RFC 6897, or Multipath TCP (MPTCP) as it's more commonly referred to. I take any bets against there being more in the future, if I were you.

What most of these RFCs related to TCP have in common is they attempt to address some issue that's holding application performance hostage. Congestion, for example, is a huge network issue that can impact TCP performance (and subsequently the performance of applications) in a very negative way. Congestion can cause lost packets and, for TCP at least, that often means retransmission. You see, TCP is very particular about the order in which is receives packets and, is also designed to be reliable. That means if a packet is lost, you're going to hear about it (or more accurately your infrastructure will hear about it and need to resend it). All those retransmitted packets, trying to traverse an already congested network... well, you can imagine it isn't exactly a good thing.

trickle-up-performanceSo there are a variety of congestion control algorithms designed to better manage TCP in such situations. From TCP Reno to Vegas to Illinois to H-TCP, algorithms are the most common way in which network stacks in general deal with congestion.

The important thing to remember about this is that performance trickles up. Improvements in the TCP stack benefit those layers that reside above, like the application.

F5 Synthesis: Faster Platforms Means Faster Apps

The F5 platforms that comprise the Synthesis High Performance Service Fabric are no different. They implement the vast majority of the congestion control algorithms available to ensure the fastest TCP stack we can offer. In the latest release of our platforms, we also added an F5 created algorithm - TCP Woodside - designed to use both loss and latency-based algorithms to improve, in particular, the performance of applications operating over mobile networks.

By implementing at the TCP - the platform - layer, all applications receive the benefit of improved performance but it's particularly noticeable in mobile environments because of the differences inherent in mobile versus fixed networks.

tcp-congestion-algorithms

 

Also new in our latest platforms is support for MPTCP, another potential boon for mobile application users. MPTCP is designed to improve performance by enabling the use of multiple TCP subflows over a single TCP connection. Messages can then be dynamically routed across those subflows. For web applications, this can result in significantly faster retrieval of the more than 90 objects that comprise the average web page today.

Synthesis 1.5 comprises a variety of new performance and security-related features that improve the platforms that make up its High Performance Services Fabric. What that ultimately means for customers and users alike is faster apps.

For more information on Synthesis:

Read the original blog entry...

More Stories By Lori MacVittie

Lori MacVittie is responsible for education and evangelism of application services available across F5’s entire product suite. Her role includes authorship of technical materials and participation in a number of community-based forums and industry standards organizations, among other efforts. MacVittie has extensive programming experience as an application architect, as well as network and systems development and administration expertise. Prior to joining F5, MacVittie was an award-winning Senior Technology Editor at Network Computing Magazine, where she conducted product research and evaluation focused on integration with application and network architectures, and authored articles on a variety of topics aimed at IT professionals. Her most recent area of focus included SOA-related products and architectures. She holds a B.S. in Information and Computing Science from the University of Wisconsin at Green Bay, and an M.S. in Computer Science from Nova Southeastern University.

Latest Stories
Whether your IoT service is connecting cars, homes, appliances, wearable, cameras or other devices, one question hangs in the balance – how do you actually make money from this service? The ability to turn your IoT service into profit requires the ability to create a monetization strategy that is flexible, scalable and working for you in real-time. It must be a transparent, smoothly implemented strategy that all stakeholders – from customers to the board – will be able to understand and comprehe...
DevOps is being widely accepted (if not fully adopted) as essential in enterprise IT. But as Enterprise DevOps gains maturity, expands scope, and increases velocity, the need for data-driven decisions across teams becomes more acute. DevOps teams in any modern business must wrangle the ‘digital exhaust’ from the delivery toolchain, "pervasive" and "cognitive" computing, APIs and services, mobile devices and applications, the Internet of Things, and now even blockchain. In this power panel at @...
"We are a leader in the market space called network visibility solutions - it enables monitoring tools and Big Data analysis to access the data and be able to see the performance," explained Shay Morag, VP of Sales and Marketing at Niagara Networks, in this SYS-CON.tv interview at 19th Cloud Expo, held November 1-3, 2016, at the Santa Clara Convention Center in Santa Clara, CA.
"We analyze the video streaming experience. We are gathering the user behavior in real time from the user devices and we analyze how users experience the video streaming," explained Eric Kim, Founder and CEO at Streamlyzer, in this SYS-CON.tv interview at 19th Cloud Expo, held November 1-3, 2016, at the Santa Clara Convention Center in Santa Clara, CA.
In his session at Cloud Expo, Robert Cohen, an economist and senior fellow at the Economic Strategy Institute, provideed economic scenarios that describe how the rapid adoption of software-defined everything including cloud services, SDDC and open networking will change GDP, industry growth, productivity and jobs. This session also included a drill down for several industries such as finance, social media, cloud service providers and pharmaceuticals.
Extracting business value from Internet of Things (IoT) data doesn’t happen overnight. There are several requirements that must be satisfied, including IoT device enablement, data analysis, real-time detection of complex events and automated orchestration of actions. Unfortunately, too many companies fall short in achieving their business goals by implementing incomplete solutions or not focusing on tangible use cases. In his general session at @ThingsExpo, Dave McCarthy, Director of Products...
@DevOpsSummit at Cloud taking place June 6-8, 2017, at Javits Center, New York City, is co-located with the 20th International Cloud Expo and will feature technical sessions from a rock star conference faculty and the leading industry players in the world. The widespread success of cloud computing is driving the DevOps revolution in enterprise IT. Now as never before, development teams must communicate and collaborate in a dynamic, 24/7/365 environment. There is no time to wait for long developm...
SYS-CON Events has announced today that Roger Strukhoff has been named conference chair of Cloud Expo and @ThingsExpo 2017 New York. The 20th Cloud Expo and 7th @ThingsExpo will take place on June 6-8, 2017, at the Javits Center in New York City, NY. "The Internet of Things brings trillions of dollars of opportunity to developers and enterprise IT, no matter how you measure it," stated Roger Strukhoff. "More importantly, it leverages the power of devices and the Internet to enable us all to im...
Businesses and business units of all sizes can benefit from cloud computing, but many don't want the cost, performance and security concerns of public cloud nor the complexity of building their own private clouds. Today, some cloud vendors are using artificial intelligence (AI) to simplify cloud deployment and management. In his session at 20th Cloud Expo, Ajay Gulati, Co-founder and CEO of ZeroStack, will discuss how AI can simplify cloud operations. He will cover the following topics: why clou...
With major technology companies and startups seriously embracing IoT strategies, now is the perfect time to attend @ThingsExpo 2016 in New York. Learn what is going on, contribute to the discussions, and ensure that your enterprise is as "IoT-Ready" as it can be! Internet of @ThingsExpo, taking place June 6-8, 2017, at the Javits Center in New York City, New York, is co-located with 20th Cloud Expo and will feature technical sessions from a rock star conference faculty and the leading industry p...
Kubernetes is a new and revolutionary open-sourced system for managing containers across multiple hosts in a cluster. Ansible is a simple IT automation tool for just about any requirement for reproducible environments. In his session at @DevOpsSummit at 18th Cloud Expo, Patrick Galbraith, a principal engineer at HPE, discussed how to build a fully functional Kubernetes cluster on a number of virtual machines or bare-metal hosts. Also included will be a brief demonstration of running a Galera MyS...
Internet-of-Things discussions can end up either going down the consumer gadget rabbit hole or focused on the sort of data logging that industrial manufacturers have been doing forever. However, in fact, companies today are already using IoT data both to optimize their operational technology and to improve the experience of customer interactions in novel ways. In his session at @ThingsExpo, Gordon Haff, Red Hat Technology Evangelist, will share examples from a wide range of industries – includin...
"We build IoT infrastructure products - when you have to integrate different devices, different systems and cloud you have to build an application to do that but we eliminate the need to build an application. Our products can integrate any device, any system, any cloud regardless of protocol," explained Peter Jung, Chief Product Officer at Pulzze Systems, in this SYS-CON.tv interview at @ThingsExpo, held November 1-3, 2016, at the Santa Clara Convention Center in Santa Clara, CA.
Keeping pace with advancements in software delivery processes and tooling is taxing even for the most proficient organizations. Point tools, platforms, open source and the increasing adoption of private and public cloud services requires strong engineering rigor – all in the face of developer demands to use the tools of choice. As Agile has settled in as a mainstream practice, now DevOps has emerged as the next wave to improve software delivery speed and output. To make DevOps work, organization...
Get deep visibility into the performance of your databases and expert advice for performance optimization and tuning. You can't get application performance without database performance. Give everyone on the team a comprehensive view of how every aspect of the system affects performance across SQL database operations, host server and OS, virtualization resources and storage I/O. Quickly find bottlenecks and troubleshoot complex problems.