Welcome!

Agile Computing Authors: James Carlini, Liz McMillan, APM Blog, Progress Blog, LeanTaaS Blog

Related Topics: Containers Expo Blog, Java IoT, Microservices Expo, Agile Computing

Containers Expo Blog: Blog Post

Be the Victor in the Hunger Games of Your Virtualization Environment

Thoughts From the Mind of a Previous VMware Admin (aka Game Master)

Thoughts From the Mind of a Previous VMware Admin (aka Game Master)

Do you ever feel like your Windows server is not performing well in the VMware environment, as if it were a sponsor-less contestant in the arena of the annual hunger games?  As a VMware admin and consultant I witnessed first hand the fine art of deception for presenting restricted resources to virtual machines.  An application owner or Windows admin would come to my cube or put in a help desk ticket asking for a new virtual machine.  They would often ask me for an insane amount of resources for this VM because the application vendor demanded it.  So just like in the Hunger Games, I would plop the new VM into the environment but at the same time I would unleash harsh conditions on the VM without the requestor ever knowing.  In my defense, I was kind of forced to be one Mean Game Master!

Memory Restrictions are like Surviving in the Arena with Heavy Wounds

To limit : something that bounds, restrains, or confines.

Windows administrators use Task Manager or other tools to gauge performance in virtual machines, and while this is great for looking into each process for CPU and Memory usage percentages, the data is highly inaccurate.  For instance, you can look at the resources tab and see that your virtual machine has 4GB of RAM.  Feeling confident in this number meeting the application requirements, you then fire up the application.  At first things seem to be humming along as if your chariot has entered the arena with trailing flames of speed, but then intermittently the application speed goes downhill with no apparent reason.  Chances are that your VM Admin(aka the Game Master) has implemented a obstacle in the arena known as a Memory Limit.

  • Ask your VM Admin for a screenshot of the Resources tab of the Virtual Machine, specifically the Memory settings area.
  • If you see that a value has been given other than the amount of RAM you expect, you are a victim of a Memory Limit.
  • The only good values on this screen would be the exact allocated memory or having the checkbox set for “Unlimited.”

So what does this mean to you?  Memory Limits are designed to aid VMware Admins in restricting the amount of physical memory actually allocated to virtual machines.   For instance, you request a 4GB of RAM machine but the VMware admin implements a 2GB limitation.  Your virtual machine is actually using what is known as a balloon mechanism so as to mask the memory limit from the operating system.  So as you gaze at the resources tab, you would see 4GB of RAM available for use, however in the background, you are paging the remaining necessary memory to disk!  The only “sponsor care package” you can receive in this scenario would be in the form of having insanely fast storage underlying the virtual machine disk files.

  • Plead with the Game Master to remove the constraints!
  • Set the Memory Limit to Unlimited or the exact amount of Memory Allocated.

Now if you have survived this long, we need to investigate the VMware ESX Host memory utilization.  How over-subscribed is the host holding your VMs? If many virtual machines are fighting for memory, the ESX Host will implement what is known as Memory Swapping. There is no tool built into the operating system that you the OS admin can use to detect this is occurring against your VM’s fight for power. If Memory Swapping is in fact occurring you now have a major issue.  All VMs on the host are experiencing latency when utilizing memory because a big chunk of that memory is virtualized on the host disk drives or Storage Area Network.

  • Petition for your workload to be moved to a less contentious host!

Continue reading in part 2 of this series here where I discuss more havoc in the arena surrounding processor restrictions!

More Stories By Tommy Patterson

Tommy Patterson began his virtualization adventure during the launch of VMware's ESX Server's initial release. At a time when most admins were only adopting virtualization as a lab-only solution, he pushed through the performance hurdles to quickly bring production applications into virtualization. Since the early 2000s, Tommy has spent most of his career in a consulting role providing assessments, engineering, planning, and implementation assistance to many members of the Fortune 500. Troubleshooting complicated scenarios, and incorporating best practices into customer's production virtualization systems has been his passion for many years. Now he share his knowledge of virtualization and cloud computing as a Technology Evangelist in the Microsoft US Developer and Platform Evangelism team.

@ThingsExpo Stories
"Cloud Academy is an enterprise training platform for the cloud, specifically public clouds. We offer guided learning experiences on AWS, Azure, Google Cloud and all the surrounding methodologies and technologies that you need to know and your teams need to know in order to leverage the full benefits of the cloud," explained Alex Brower, VP of Marketing at Cloud Academy, in this SYS-CON.tv interview at 21st Cloud Expo, held Oct 31 – Nov 2, 2017, at the Santa Clara Convention Center in Santa Clar...
In his session at 21st Cloud Expo, Carl J. Levine, Senior Technical Evangelist for NS1, will objectively discuss how DNS is used to solve Digital Transformation challenges in large SaaS applications, CDNs, AdTech platforms, and other demanding use cases. Carl J. Levine is the Senior Technical Evangelist for NS1. A veteran of the Internet Infrastructure space, he has over a decade of experience with startups, networking protocols and Internet infrastructure, combined with the unique ability to it...
"IBM is really all in on blockchain. We take a look at sort of the history of blockchain ledger technologies. It started out with bitcoin, Ethereum, and IBM evaluated these particular blockchain technologies and found they were anonymous and permissionless and that many companies were looking for permissioned blockchain," stated René Bostic, Technical VP of the IBM Cloud Unit in North America, in this SYS-CON.tv interview at 21st Cloud Expo, held Oct 31 – Nov 2, 2017, at the Santa Clara Conventi...
Gemini is Yahoo’s native and search advertising platform. To ensure the quality of a complex distributed system that spans multiple products and components and across various desktop websites and mobile app and web experiences – both Yahoo owned and operated and third-party syndication (supply), with complex interaction with more than a billion users and numerous advertisers globally (demand) – it becomes imperative to automate a set of end-to-end tests 24x7 to detect bugs and regression. In th...
Widespread fragmentation is stalling the growth of the IIoT and making it difficult for partners to work together. The number of software platforms, apps, hardware and connectivity standards is creating paralysis among businesses that are afraid of being locked into a solution. EdgeX Foundry is unifying the community around a common IoT edge framework and an ecosystem of interoperable components.
"MobiDev is a software development company and we do complex, custom software development for everybody from entrepreneurs to large enterprises," explained Alan Winters, U.S. Head of Business Development at MobiDev, in this SYS-CON.tv interview at 21st Cloud Expo, held Oct 31 – Nov 2, 2017, at the Santa Clara Convention Center in Santa Clara, CA.
Large industrial manufacturing organizations are adopting the agile principles of cloud software companies. The industrial manufacturing development process has not scaled over time. Now that design CAD teams are geographically distributed, centralizing their work is key. With large multi-gigabyte projects, outdated tools have stifled industrial team agility, time-to-market milestones, and impacted P&L stakeholders.
"Space Monkey by Vivent Smart Home is a product that is a distributed cloud-based edge storage network. Vivent Smart Home, our parent company, is a smart home provider that places a lot of hard drives across homes in North America," explained JT Olds, Director of Engineering, and Brandon Crowfeather, Product Manager, at Vivint Smart Home, in this SYS-CON.tv interview at @ThingsExpo, held Oct 31 – Nov 2, 2017, at the Santa Clara Convention Center in Santa Clara, CA.
"Akvelon is a software development company and we also provide consultancy services to folks who are looking to scale or accelerate their engineering roadmaps," explained Jeremiah Mothersell, Marketing Manager at Akvelon, in this SYS-CON.tv interview at 21st Cloud Expo, held Oct 31 – Nov 2, 2017, at the Santa Clara Convention Center in Santa Clara, CA.
Coca-Cola’s Google powered digital signage system lays the groundwork for a more valuable connection between Coke and its customers. Digital signs pair software with high-resolution displays so that a message can be changed instantly based on what the operator wants to communicate or sell. In their Day 3 Keynote at 21st Cloud Expo, Greg Chambers, Global Group Director, Digital Innovation, Coca-Cola, and Vidya Nagarajan, a Senior Product Manager at Google, discussed how from store operations and ...
"There's plenty of bandwidth out there but it's never in the right place. So what Cedexis does is uses data to work out the best pathways to get data from the origin to the person who wants to get it," explained Simon Jones, Evangelist and Head of Marketing at Cedexis, in this SYS-CON.tv interview at 21st Cloud Expo, held Oct 31 – Nov 2, 2017, at the Santa Clara Convention Center in Santa Clara, CA.
SYS-CON Events announced today that CrowdReviews.com has been named “Media Sponsor” of SYS-CON's 22nd International Cloud Expo, which will take place on June 5–7, 2018, at the Javits Center in New York City, NY. CrowdReviews.com is a transparent online platform for determining which products and services are the best based on the opinion of the crowd. The crowd consists of Internet users that have experienced products and services first-hand and have an interest in letting other potential buye...
SYS-CON Events announced today that Telecom Reseller has been named “Media Sponsor” of SYS-CON's 22nd International Cloud Expo, which will take place on June 5-7, 2018, at the Javits Center in New York, NY. Telecom Reseller reports on Unified Communications, UCaaS, BPaaS for enterprise and SMBs. They report extensively on both customer premises based solutions such as IP-PBX as well as cloud based and hosted platforms.
It is of utmost importance for the future success of WebRTC to ensure that interoperability is operational between web browsers and any WebRTC-compliant client. To be guaranteed as operational and effective, interoperability must be tested extensively by establishing WebRTC data and media connections between different web browsers running on different devices and operating systems. In his session at WebRTC Summit at @ThingsExpo, Dr. Alex Gouaillard, CEO and Founder of CoSMo Software, presented ...
WebRTC is great technology to build your own communication tools. It will be even more exciting experience it with advanced devices, such as a 360 Camera, 360 microphone, and a depth sensor camera. In his session at @ThingsExpo, Masashi Ganeko, a manager at INFOCOM Corporation, introduced two experimental projects from his team and what they learned from them. "Shotoku Tamago" uses the robot audition software HARK to track speakers in 360 video of a remote party. "Virtual Teleport" uses a multip...
A strange thing is happening along the way to the Internet of Things, namely far too many devices to work with and manage. It has become clear that we'll need much higher efficiency user experiences that can allow us to more easily and scalably work with the thousands of devices that will soon be in each of our lives. Enter the conversational interface revolution, combining bots we can literally talk with, gesture to, and even direct with our thoughts, with embedded artificial intelligence, whic...
SYS-CON Events announced today that Evatronix will exhibit at SYS-CON's 21st International Cloud Expo®, which will take place on Oct 31 – Nov 2, 2017, at the Santa Clara Convention Center in Santa Clara, CA. Evatronix SA offers comprehensive solutions in the design and implementation of electronic systems, in CAD / CAM deployment, and also is a designer and manufacturer of advanced 3D scanners for professional applications.
Leading companies, from the Global Fortune 500 to the smallest companies, are adopting hybrid cloud as the path to business advantage. Hybrid cloud depends on cloud services and on-premises infrastructure working in unison. Successful implementations require new levels of data mobility, enabled by an automated and seamless flow across on-premises and cloud resources. In his general session at 21st Cloud Expo, Greg Tevis, an IBM Storage Software Technical Strategist and Customer Solution Architec...
To get the most out of their data, successful companies are not focusing on queries and data lakes, they are actively integrating analytics into their operations with a data-first application development approach. Real-time adjustments to improve revenues, reduce costs, or mitigate risk rely on applications that minimize latency on a variety of data sources. In his session at @BigDataExpo, Jack Norris, Senior Vice President, Data and Applications at MapR Technologies, reviewed best practices to ...
An increasing number of companies are creating products that combine data with analytical capabilities. Running interactive queries on Big Data requires complex architectures to store and query data effectively, typically involving data streams, an choosing efficient file format/database and multiple independent systems that are tied together through custom-engineered pipelines. In his session at @BigDataExpo at @ThingsExpo, Tomer Levi, a senior software engineer at Intel’s Advanced Analytics gr...