|By Tommy Patterson||
|November 9, 2012 01:00 PM EST||
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!
SYS-CON Events announced today that Super Micro Computer, Inc., a global leader in Embedded and IoT solutions, will exhibit at SYS-CON's 18th International Cloud Expo®, which will take place on June 7-9, 2016, at the Javits Center in New York City, NY. 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 ...
May. 31, 2016 03:15 PM EDT Reads: 949
Cloud computing delivers on-demand resources that provide businesses with flexibility and cost-savings. The challenge in moving workloads to the cloud has been the cost and complexity of ensuring the initial and ongoing security and regulatory (PCI, HIPAA, FFIEC) compliance across private and public clouds. Manual security compliance is slow, prone to human error, and represents over 50% of the cost of managing cloud applications. Determining how to automate cloud security compliance is critical...
May. 31, 2016 03:00 PM EDT Reads: 2,006
18th Cloud Expo, taking place June 7-9, 2016, at the Javits Center in New York City, NY, will feature technical sessions from a rock star conference faculty and the leading industry players in the world. Cloud computing is now being embraced by a majority of enterprises of all sizes. Yesterday's debate about public vs. private has transformed into the reality of hybrid cloud: a recent survey shows that 74% of enterprises have a hybrid cloud strategy. Meanwhile, 94% of enterprises are using some...
May. 31, 2016 03:00 PM EDT Reads: 3,303
SYS-CON Events announced today that IBM Cloud Data Services has been named “Bronze Sponsor” of SYS-CON's 18th Cloud Expo, which will take place on June 7-9, 2016, at the Javits Center in New York City, NY. IBM Cloud Data Services offers a portfolio of integrated, best-of-breed cloud data services for developers focused on mobile computing and analytics use cases.
May. 31, 2016 02:45 PM EDT Reads: 1,723
SYS-CON Events announced today that ContentMX, the marketing technology and services company with a singular mission to increase engagement and drive more conversations for enterprise, channel and SMB technology marketers, has been named “Sponsor & Exhibitor Lounge Sponsor” of SYS-CON's 18th Cloud Expo, which will take place on June 7-9, 2016, at the Javits Center in New York City, New York. “CloudExpo is a great opportunity to start a conversation with new prospects, but what happens after the...
May. 31, 2016 02:30 PM EDT Reads: 1,488
The IoT is changing the way enterprises conduct business. In his session at @ThingsExpo, Eric Hoffman, Vice President at EastBanc Technologies, discuss how businesses can gain an edge over competitors by empowering consumers to take control through IoT. We'll cite examples such as a Washington, D.C.-based sports club that leveraged IoT and the cloud to develop a comprehensive booking system. He'll also highlight how IoT can revitalize and restore outdated business models, making them profitable...
May. 31, 2016 02:00 PM EDT Reads: 3,130
Customer experience has become a competitive differentiator for companies, and it’s imperative that brands seamlessly connect the customer journey across all platforms. With the continued explosion of IoT, join us for a look at how to build a winning digital foundation in the connected era – today and in the future. In his session at @ThingsExpo, Chris Nguyen, Group Product Marketing Manager at Adobe, will discuss how to successfully leverage mobile, rapidly deploy content, capture real-time d...
May. 31, 2016 01:45 PM EDT Reads: 1,790
What a difference a year makes. Organizations aren’t just talking about IoT possibilities, it is now baked into their core business strategy. With IoT, billions of devices generating data from different companies on different networks around the globe need to interact. From efficiency to better customer insights to completely new business models, IoT will turn traditional business models upside down. In the new customer-centric age, the key to success is delivering critical services and apps wit...
May. 31, 2016 12:30 PM EDT Reads: 1,398
As cloud and storage projections continue to rise, the number of organizations moving to the cloud is escalating and it is clear cloud storage is here to stay. However, is it secure? Data is the lifeblood for government entities, countries, cloud service providers and enterprises alike and losing or exposing that data can have disastrous results. There are new concepts for data storage on the horizon that will deliver secure solutions for storing and moving sensitive data around the world. ...
May. 31, 2016 12:00 PM EDT Reads: 1,506
Join us at Cloud Expo | @ThingsExpo 2016 – June 7-9 at the Javits Center in New York City and November 1-3 at the Santa Clara Convention Center in Santa Clara, CA – and deliver your unique message in a way that is striking and unforgettable by taking advantage of SYS-CON's unmatched high-impact, result-driven event / media packages.
May. 31, 2016 12:00 PM EDT Reads: 2,624
In his keynote at 18th Cloud Expo, Andrew Keys, Co-Founder of ConsenSys Enterprise, will provide an overview of the evolution of the Internet and the Database and the future of their combination – the Blockchain. Andrew Keys is Co-Founder of ConsenSys Enterprise. He comes to ConsenSys Enterprise with capital markets, technology and entrepreneurial experience. Previously, he worked for UBS investment bank in equities analysis. Later, he was responsible for the creation and distribution of life ...
May. 31, 2016 11:45 AM EDT Reads: 2,128
SYS-CON Events announced today that MobiDev will exhibit at SYS-CON's 18th International Cloud Expo®, which will take place on June 7-9, 2016, at the Javits Center in New York City, NY. MobiDev is a software company that develops and delivers turn-key mobile apps, websites, web services, and complex software systems for startups and enterprises. Since 2009 it has grown from a small group of passionate engineers and business managers to a full-scale mobile software company with over 200 develope...
May. 31, 2016 10:15 AM EDT Reads: 2,926
SoftLayer operates a global cloud infrastructure platform built for Internet scale. With a global footprint of data centers and network points of presence, SoftLayer provides infrastructure as a service to leading-edge customers ranging from Web startups to global enterprises. SoftLayer's modular architecture, full-featured API, and sophisticated automation provide unparalleled performance and control. Its flexible unified platform seamlessly spans physical and virtual devices linked via a world...
May. 31, 2016 09:00 AM EDT Reads: 2,448
SYS-CON Events announced today that BMC Software has been named "Siver Sponsor" of SYS-CON's 18th Cloud Expo, which will take place on June 7-9, 2015 at the Javits Center in New York, New York. BMC is a global leader in innovative software solutions that help businesses transform into digital enterprises for the ultimate competitive advantage. BMC Digital Enterprise Management is a set of innovative IT solutions designed to make digital business fast, seamless, and optimized from mainframe to mo...
May. 31, 2016 08:45 AM EDT Reads: 2,425
"What we see what happens when you have a completely networked society and the potential to now drive the value creation and the collaboration and the ecosystems that are possible when you start to be able to connect people and industries together in ways that have never been possible before," explained Esmeralda Swartz, VP of Marketing Enterprise & Cloud at Ericsson, in this SYS-CON.tv interview at @ThingsExpo, held November 3-5, 2015, at the Santa Clara Convention Center in Santa Clara, CA.
May. 31, 2016 08:15 AM EDT Reads: 1,872
Companies can harness IoT and predictive analytics to sustain business continuity; predict and manage site performance during emergencies; minimize expensive reactive maintenance; and forecast equipment and maintenance budgets and expenditures. Providing cost-effective, uninterrupted service is challenging, particularly for organizations with geographically dispersed operations.
May. 31, 2016 08:00 AM EDT Reads: 2,360
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...
May. 31, 2016 07:45 AM EDT Reads: 1,871
The IoTs will challenge the status quo of how IT and development organizations operate. Or will it? Certainly the fog layer of IoT requires special insights about data ontology, security and transactional integrity. But the developmental challenges are the same: People, Process and Platform. In his session at @ThingsExpo, Craig Sproule, CEO of Metavine, will demonstrate how to move beyond today's coding paradigm and share the must-have mindsets for removing complexity from the development proc...
May. 31, 2016 06:00 AM EDT Reads: 2,041
SYS-CON Events announced today TechTarget has been named “Media Sponsor” of SYS-CON's 18th International Cloud Expo, which will take place on June 7–9, 2016, at the Javits Center in New York City, NY, and the 19th International Cloud Expo, which will take place on November 1–3, 2016, at the Santa Clara Convention Center in Santa Clara, CA. TechTarget is the Web’s leading destination for serious technology buyers researching and making enterprise technology decisions. Its extensive global networ...
May. 31, 2016 05:45 AM EDT Reads: 3,388
SYS-CON Events announced today that MangoApps will exhibit at SYS-CON's 18th International Cloud Expo®, which will take place on June 7-9, 2016, at the Javits Center in New York City, NY. MangoApps provides modern company intranets and team collaboration software, allowing workers to stay connected and productive from anywhere in the world and from any device. For more information, please visit https://www.mangoapps.com/.
May. 31, 2016 05:45 AM EDT Reads: 1,227