|By Don MacVittie||
|December 4, 2012 07:45 AM EST||
Test results provided by vendors and “independent testing labs” often test for things that just don’t matter in the datacenter. Know what you’re getting.
When working in medicine, you don’t glance over a patient, then ask them “so how do you feel when you’re at your best?” You ask them what is wrong, then run a ton of tests – even if the patient thinks they know what is wrong – then let the evidence determine the best course of treatment.
Sadly, when determining the best tools for your IT staff to use, we rarely follow the same course. We invite a salesperson in, ask them “so, what do you do?”, and let them tell us with their snippets of reality or almost-reality why their product rocks the known world. Depending upon the salesperson and the company, their personal moral code or corporate standards could limit them to not bringing up the weak points of their products to outright lying about its capabilities.
“But Don!”, you say, “you’re being a bit extreme, aren’t you?” Not in my experience I am not. From being an enterprise architect to doing comparative reviews, I have seen it all. Vendor culture seems to infiltrate how employees interact with the world outside their HQ – or more likely (though I’ve never seen any research on it), vendors tend to hire to fit their culture, which ranges from straight-up truth about everything to wild claims that fall apart the first time the device is put into an actual production-level network.
The most common form of disinformation that is out there is to set up tests so they simply show the device operating at peak efficiency. This is viewed as almost normal by most vendors – why would you showcase your product in less than its best light? and as a necessary evil by most of the few who don’t have that view – every other vendor in the space is using this particular test metric, we’d better too or we’ll look bad. Historically, in network gear, nearly empty communications streams have been the standard for high connection rates, very large window sizes the standard for manipulating throughput rates. While there are many other games vendors in the space play to look better than they are, it is easy to claim you handle X million connections per second if those connections aren’t actually doing anything. It is also easier to claim you handle a throughput of Y Mbps if you set the window size larger than reality would ever see it.
Problem with this kind of testing is that it seeps into the blood, after a while, those test results start to be sold as actual… And then customers put the device into their network, and needless to say, they see nothing of the kind. You would be surprised the number of times when we were testing for Network Computing that a vendor downright failed to operate as expected when put into a live network, let alone met the numbers the vendor was telling customers about performance.
One of the reasons I came to F5 way back when was that they did not play these games. They were willing to make the marketing match the product and put a new item on the roadmap for things that weren’t as good as they wanted. We’re still out there today helping IT staff understand testing, and what testing will show relevant numbers to the real world. By way of example, there is the Testing Configuration Guide on F5 DevCentral.
As Application Delivery Controllers have matured and solidified, there has been much change in how they approach network traffic. This has created an area we are now starting to talk more about, which is the validity of throughput testing in regards to ADCs in general. The thing is, we’ve progressed to the point that simply “we can handle X Mbps!” is no longer a valid indication of the workloads an ADC will be required to handle in production scenarios. The real measure for application throughput that matters is requests per second. Vendors generally avoid this kind of testing, because response is also limited by the capacity of the server doing the actual responding, so it is easy to get artificially low numbers.
At this point in the evolution of the network, we have reached the reality of that piece of utility computing. Your network should be like electricity. You should be able to expect that it will be on, and that you will have enough throughput to handle incoming load. Mbps is like measuring amperage… When you don’t have enough, you’ll know it, but you should, generally speaking, have enough. It is time to focus more on what uses you put that bandwidth to, and how to conserve it. Switching to LED bulbs is like putting in an ADC that is provably able to improve app performance. LEDs use less electricity, the ADC reduces bandwidth usage… Except that throughput or packets per second isn’t measuring actual improvements of bandwidth usage. It’s more akin to turning off your lights after installing LED bulbs, and then saying “lookie how much electricity those new bulbs saved!”
Seriously, do you care if your ADC can delivery 20 million Megabits per second in throughput, or that it allows your servers to respond to requests in a timely manner? Seriously, the purpose of an Application Delivery Controller is to facilitate and accelerate the delivery of applications, which means responses to requests. If you’re implementing WAN Optimization functionality, throughput is still a very valid test. If you’re looking at the Application Delivery portion of the ADC though, it really has no basis in reality, because requests and responses are messy, not “as large a string of ones as I can cram through here”. From an application perspective – particularly from a web application perspective – there is a lot of “here’s a ton of HTML, hold on, sending images, wait, I have a video lookup…” Mbps or MBps just doesn’t measure the variety of most web applications. But users are going to feel requests per second just as much as testing will show positive or negative impacts. To cover the problem of application servers actually having a large impact on testing, do what you do with everything else in your environment, control for change. When evaluating ADCs, simply use the same application infrastructure and change only the ADC out. Then you are testing apples-to-apples, and the relative values of those test results will give you a gauge for how well a given ADC will perform in your environment.
In short, of course the ADC looks better if it isn’t doing anything. But ADCs do a ton in production networks, and that needs to be reflected in testing. If you’re fortunate enough to have time and equipment, get a test scheduled with your prospective vendor, and make sure that test is based upon the usage your actual network will expose the device to. If you are not, then identify your test scenarios to stress what’s most important to you, and insist that your vendor give you test results in those scenarios. In the end, you know your network far better than they ever will, and you know they’re at least not telling you the whole story, make sure you can get it.
Needless to say, this is a segue into the next segment of our #BareMetalBlog series, but first I’m going to finish educating myself about our use of FPGAs and finish that segment up.
As more intelligent IoT applications shift into gear, they’re merging into the ever-increasing traffic flow of the Internet. It won’t be long before we experience bottlenecks, as IoT traffic peaks during rush hours. Organizations that are unprepared will find themselves by the side of the road unable to cross back into the fast lane. As billions of new devices begin to communicate and exchange data – will your infrastructure be scalable enough to handle this new interconnected world?
Oct. 13, 2015 09:30 PM EDT Reads: 166
SYS-CON Events announced today that Super Micro Computer, Inc., a global leader in high-performance, high-efficiency server, storage technology and green computing, will exhibit at the 17th International Cloud Expo®, which will take place on November 3–5, 2015, at the Santa Clara Convention Center in Santa Clara, CA. Supermicro (NASDAQ: SMCI), the leading innovator in high-performance, high-efficiency server technology is a premier provider of advanced server Building Block Solutions® for Data Center, Cloud Computing, Enterprise IT, Hadoop/Big Data, HPC and Embedded Systems worldwide. Supermi...
Oct. 13, 2015 09:00 PM EDT Reads: 259
Who are you? How do you introduce yourself? Do you use a name, or do you greet a friend by the last four digits of his social security number? Assuming you don’t, why are we content to associate our identity with 10 random digits assigned by our phone company? Identity is an issue that affects everyone, but as individuals we don’t spend a lot of time thinking about it. In his session at @ThingsExpo, Ben Klang, Founder & President of Mojo Lingo, will discuss the impact of technology on identity. Should we federate, or not? How should identity be secured? Who owns the identity? How is identity ...
Oct. 13, 2015 09:00 PM EDT Reads: 500
This week, the team assembled in NYC for @Cloud Expo 2015 and @ThingsExpo 2015. For the past four years, this has been a must-attend event for MetraTech. We were happy to once again join industry visionaries, colleagues, customers and even competitors to share and explore the ways in which the Internet of Things (IoT) will impact our industry. Over the course of the show, we discussed the types of challenges we will collectively need to solve to capitalize on the opportunity IoT presents.
Oct. 13, 2015 08:30 PM EDT Reads: 149
Today’s connected world is moving from devices towards things, what this means is that by using increasingly low cost sensors embedded in devices we can create many new use cases. These span across use cases in cities, vehicles, home, offices, factories, retail environments, worksites, health, logistics, and health. These use cases rely on ubiquitous connectivity and generate massive amounts of data at scale. These technologies enable new business opportunities, ways to optimize and automate, along with new ways to engage with users.
Oct. 13, 2015 07:00 PM EDT Reads: 285
WebRTC converts the entire network into a ubiquitous communications cloud thereby connecting anytime, anywhere through any point. In his session at WebRTC Summit,, Mark Castleman, EIR at Bell Labs and Head of Future X Labs, will discuss how the transformational nature of communications is achieved through the democratizing force of WebRTC. WebRTC is doing for voice what HTML did for web content.
Oct. 13, 2015 07:00 PM EDT Reads: 1,504
Through WebRTC, audio and video communications are being embedded more easily than ever into applications, helping carriers, enterprises and independent software vendors deliver greater functionality to their end users. With today’s business world increasingly focused on outcomes, users’ growing calls for ease of use, and businesses craving smarter, tighter integration, what’s the next step in delivering a richer, more immersive experience? That richer, more fully integrated experience comes about through a Communications Platform as a Service which allows for messaging, screen sharing, video...
Oct. 13, 2015 06:15 PM EDT Reads: 1,234
SYS-CON Events announced today that Dyn, the worldwide leader in Internet Performance, will exhibit at SYS-CON's 17th International Cloud Expo®, which will take place on November 3-5, 2015, at the Santa Clara Convention Center in Santa Clara, CA. Dyn is a cloud-based Internet Performance company. Dyn helps companies monitor, control, and optimize online infrastructure for an exceptional end-user experience. Through a world-class network and unrivaled, objective intelligence into Internet conditions, Dyn ensures traffic gets delivered faster, safer, and more reliably than ever.
Oct. 13, 2015 04:00 PM EDT Reads: 730
SYS-CON Events announced today that Sandy Carter, IBM General Manager Cloud Ecosystem and Developers, and a Social Business Evangelist, will keynote at the 17th International Cloud Expo®, which will take place on November 3–5, 2015, at the Santa Clara Convention Center in Santa Clara, CA.
Oct. 13, 2015 03:15 PM EDT Reads: 260
With major technology companies and startups seriously embracing IoT strategies, now is the perfect time to attend @ThingsExpo in Silicon Valley. 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 Nov 3-5, 2015, at the Santa Clara Convention Center in Santa Clara, CA, is co-located with 17th Cloud Expo and will feature technical sessions from a rock star conference faculty and the leading industry players in the world. The Internet of Things (IoT) is the most profound change in personal an...
Oct. 13, 2015 01:00 PM EDT Reads: 230
The Internet of Things (IoT) is growing rapidly by extending current technologies, products and networks. By 2020, Cisco estimates there will be 50 billion connected devices. Gartner has forecast revenues of over $300 billion, just to IoT suppliers. Now is the time to figure out how you’ll make money – not just create innovative products. With hundreds of new products and companies jumping into the IoT fray every month, there’s no shortage of innovation. Despite this, McKinsey/VisionMobile data shows "less than 10 percent of IoT developers are making enough to support a reasonably sized team....
Oct. 13, 2015 01:00 PM EDT Reads: 347
The IoT market is on track to hit $7.1 trillion in 2020. The reality is that only a handful of companies are ready for this massive demand. There are a lot of barriers, paint points, traps, and hidden roadblocks. How can we deal with these issues and challenges? The paradigm has changed. Old-style ad-hoc trial-and-error ways will certainly lead you to the dead end. What is mandatory is an overarching and adaptive approach to effectively handle the rapid changes and exponential growth.
Oct. 13, 2015 01:00 PM EDT Reads: 340
There will be 20 billion IoT devices connected to the Internet soon. What if we could control these devices with our voice, mind, or gestures? What if we could teach these devices how to talk to each other? What if these devices could learn how to interact with us (and each other) to make our lives better? What if Jarvis was real? How can I gain these super powers? In his session at 17th Cloud Expo, Chris Matthieu, co-founder and CTO of Octoblu, will show you!
Oct. 13, 2015 12:00 PM EDT Reads: 309
Developing software for the Internet of Things (IoT) comes with its own set of challenges. Security, privacy, and unified standards are a few key issues. In addition, each IoT product is comprised of at least three separate application components: the software embedded in the device, the backend big-data service, and the mobile application for the end user's controls. Each component is developed by a different team, using different technologies and practices, and deployed to a different stack/target - this makes the integration of these separate pipelines and the coordination of software upd...
Oct. 13, 2015 12:00 PM EDT Reads: 414
As a company adopts a DevOps approach to software development, what are key things that both the Dev and Ops side of the business must keep in mind to ensure effective continuous delivery? In his session at DevOps Summit, Mark Hydar, Head of DevOps, Ericsson TV Platforms, will share best practices and provide helpful tips for Ops teams to adopt an open line of communication with the development side of the house to ensure success between the two sides.
Oct. 13, 2015 12:00 PM EDT Reads: 695
The IoT is upon us, but today’s databases, built on 30-year-old math, require multiple platforms to create a single solution. Data demands of the IoT require Big Data systems that can handle ingest, transactions and analytics concurrently adapting to varied situations as they occur, with speed at scale. In his session at @ThingsExpo, Chad Jones, chief strategy officer at Deep Information Sciences, will look differently at IoT data so enterprises can fully leverage their IoT potential. He’ll share tips on how to speed up business initiatives, harness Big Data and remain one step ahead by apply...
Oct. 13, 2015 12:00 PM EDT Reads: 749
The Internet of Everything is re-shaping technology trends–moving away from “request/response” architecture to an “always-on” Streaming Web where data is in constant motion and secure, reliable communication is an absolute necessity. As more and more THINGS go online, the challenges that developers will need to address will only increase exponentially. In his session at @ThingsExpo, Todd Greene, Founder & CEO of PubNub, will explore the current state of IoT connectivity and review key trends and technology requirements that will drive the Internet of Things from hype to reality.
Oct. 13, 2015 11:00 AM EDT Reads: 323
Today air travel is a minefield of delays, hassles and customer disappointment. Airlines struggle to revitalize the experience. GE and M2Mi will demonstrate practical examples of how IoT solutions are helping airlines bring back personalization, reduce trip time and improve reliability. In their session at @ThingsExpo, Shyam Varan Nath, Principal Architect with GE, and Dr. Sarah Cooper, M2Mi's VP Business Development and Engineering, will explore the IoT cloud-based platform technologies driving this change including privacy controls, data transparency and integration of real time context w...
Oct. 13, 2015 11:00 AM EDT Reads: 306
"Matrix is an ambitious open standard and implementation that's set up to break down the fragmentation problems that exist in IP messaging and VoIP communication," explained John Woolf, Technical Evangelist at Matrix, in this SYS-CON.tv interview at @ThingsExpo, held Nov 4–6, 2014, at the Santa Clara Convention Center in Santa Clara, CA.
Oct. 13, 2015 07:00 AM EDT Reads: 6,014
Nowadays, a large number of sensors and devices are connected to the network. Leading-edge IoT technologies integrate various types of sensor data to create a new value for several business decision scenarios. The transparent cloud is a model of a new IoT emergence service platform. Many service providers store and access various types of sensor data in order to create and find out new business values by integrating such data.
Oct. 13, 2015 04:00 AM EDT Reads: 684