Condusiv Technologies Blog

Condusiv Technologies Blog

Blogging @Condusiv

The Condusiv blog shares insight into the issues surrounding system and application performance—and how I/O optimization software is breaking new ground in solving those issues.

Do I Really Need V-locity on All VMs?

by Rick Cadruvi, Chief Architect 15. August 2019 04:12

V-locity® customers may wonder, “How many VMs do I need to install V-locity on for optimal results? What kind of benefits will I see with V-locity on one or two VMs versus all the VMs on a host?”

 

The answer is that the I/O Blender Effect takes over and now VM “A” is competing directly with VM “B” and VM “C” and so on.  The blender pours all those resource desires into a funnel, creating bottlenecks with unpredictable performance results.  What is predictable is that performance will suffer, and likely a LOT.

V-locity was designed from the ground up to intelligently deal with these core issues.  The guiding question in front of us as it was being designed and engineered, was:

 

Given your workload and resources, how can V-locity help you overcome the I/O Blender Effect?

 

By making sure that V-locity will adapt to your specific workload and having studied what kinds of I/Os amplify the I/O Blender Effect, we were able to add intelligence to specifically go after those I/Os.  We take a global view.  We aren’t limited to a specific application or workload.  While we do have technologies that shine under certain workloads, such as transactional SQL applications, our goal is to optimize the entire ecosystem.  That’s the only way to overcome the I/O Blender Effect.

So, while we can indeed give you great gains on a single VM, V-locity truly gets to shine and show off its purpose when it can intelligently deal with the chokepoints that create the I/O Blender Effect.  That means you should add V-locity to ALL your VMs.  With our no-reboot installation and a V-locity Management Console, it’s fast and easy to cover and manage your environment.

If you have V-locity on all the VMs on your host(s), let us know how it is going! If you don’t yet, contact your account manager who can get you set up!

For an in-depth refresher,  watch our 10-min whiteboard video

Improve Performance Without Getting Stuck with Unnecessary and Expensive Hardware

by Marissa Newman 14. August 2019 04:15

We recently completed a case study with a top construction company who deployed V-locity® I/O reduction software to improve speed on Citrix and SQL applications and avoided unnecessary hardware costs.

Performance on Teichert’s Citrix and SQL servers that were running critical applications was beginning to suffer due to the growth of data, increased number of users, and infrastructure virtualization. When user complaints about the slowness of the live-order entry system, queries taking too long, and poor system performance in general were at a high, Steve Lomax, Teichert’s Senior Windows Systems Administrator, began to look at various solutions to optimize their infrastructure.

Having already been a Diskeeper customer, the company decided to evaluate Condusiv’s V-locity® I/O reduction software and were pleased to find that they no longer needed to implement any of the other solutions they were looking at to optimize performance. Steve explained, “We were surprised to learn that Condusiv had advanced their software to such a degree that they were now proactively optimizing writes in-line, cutting out a ton of write I/O that was previously hammering our SAN. We upgraded from a NetApp tiered storage solution…to a hybrid-flash Tintri T850 and experienced the same results from V-locity regardless of the brand or type of storage we had underlying our data center.”

The company saw major improvement across the board and particularly on their Citrix and SQL servers. On their 30 busiest servers, V-locity had prevented 41% of write I/O traffic from occurring and 50% of read I/O traffic from storage due to DRAM read caching.

Deploying V-locity to their virtual infrastructure eliminated the need to spend money on additional hardware and other 3rd party performance solutions. Steve said, “We were looking at other solutions that could give us a performance boost…[but] were able to skip all that because V-locity solved it with a simple install right into the VM and that’s it. You’re done. I would recommend V-locity to anyone that doesn’t want to be stuck with unnecessary hardware costs and needs a solution to add an extra layer of enhanced performance.”

Steve concluded by describing the positive impacts brought on by V-locity’s performance gains. “We’ve seen at least a 50-60% drop in performance-related issues…General frustration is gone, users are more productive and efficient, customers don’t have to wait long periods of time to process orders, and the IT department is freed up to focus on more important initiatives relating to the company’s mission and core values.”

 

Read the full case study

 

Try V-locity FREE for yourself – no reboot is needed

Overcoming the I/O Blender Effect with V-locity

by Rick Cadruvi, Chief Architect 5. August 2019 05:23

You’ve decided that you want to try out V-locity® software – kick the tires so to speak.  You’ll just load it on one of your Virtual Machines and see how it goes.  What kind of benefit will you see?

It is true that V-locity will likely provide significant benefit on that one VM.  It may even be extraordinary.  But loading V-locity on just one VM on a host with sometimes dozens of VMs won’t give you the biggest bang for your buck. V-locity includes many technologies that address storage performance issues in an extremely intelligent manner.  Part of the underlying design is to learn about the specific loads your system has and intelligently adapt to each specific environment presented to it.   That’s why we created a product especially for Virtual environments in the first place. 

The beauty of V-locity is its ability to deal with something called the I/O Blender Effect.  This is the dark side of virtualized systems.  When there are multiple VMs on a host, or multiple hosts with VMs that use the same back-end storage system (e.g., a SAN) a “blender” effect occurs when all these VMs are sending I/O requests up and down the stack.  As you can guess, it can create huge performance bottlenecks. In fact, perhaps the most significant issue that virtualized environments face is the fact that there are MANY performance chokepoints in the ecosystem, especially the storage subsystem.  These chokepoints are robbing 30-50% of your throughput.  That’s what V-locity can recover.

Look at it this way.  VM “A” may have different resource requirements than VM “B” and so on.  Besides performing different tasks with different workloads, they may have different peak usage periods.  What happens when those peaks overlap?  Worse yet, what happens if several of your VMs have very similar resource requirements and workloads that constantly overlap? 

 

The answer is that the I/O Blender Effect takes over and now VM “A” is competing directly with VM “B” and VM “C” and so on.  The blender pours all those resource desires into a funnel, creating bottlenecks with unpredictable performance results.  What is predictable is that performance will suffer, and likely a LOT.

Enter V-locity.  V-locity was designed from the ground up to intelligently deal with these core issues.  The guiding question in front of us as it was being designed and engineered, was:

Given your workload and resources, how can V-locity help you overcome the I/O Blender Effect?

By making sure that V-locity will adapt to your specific workload and having studied what kinds of I/Os amplify the I/O Blender Effect, we were able to add intelligence to specifically go after those I/Os.  We take a global view.  We aren’t limited to a specific application or workload.  While we do have technologies that shine under certain workloads, such as transactional SQL applications, our goal is to optimize the entire ecosystem.  That’s the only way to overcome the I/O Blender Effect.

So, while we can indeed give you great gains on a single VM, V-locity truly gets to shine and show off its purpose when it can intelligently deal with the chokepoints that create the I/O Blender Effect.  That means you should add V-locity to ALL your VMs.  With our no-reboot installation and a V-locity Management Console, it’s fast and easy to cover and manage your environment.

And yes, this same I/O Blender effect can occur in your physical environment with multiple physical systems all accessing different LUNs on the same SAN. Our Diskeeper® software is the answer here.

Go ahead and try V-locity on the VMs that are in the most competition for resources and you’ll be amazed at the benefits.  The chokepoints aren’t obvious or right in front of your face, but they are real and V-locity is the answer.  After that, just add V-locity to all your VMs, then sit back and see how smart you were to so easily improve throughput across your eco-system.

Video: Condusiv I/O Reduction Software Overview

Download a 30-day Free Trial

 

Caching Is King

by Gary Quan 29. July 2019 06:43

Caching technology has been around for quite some time, so why is Condusiv’s patented IntelliMemory® caching so unique that it outperforms other caching technology and has been licensed by other top OEM PC and Storage vendors? There are a few innovations that make it stand above the others. 

The first innovation is the technology to determine what data to put and keep in cache for the best performance gains on each system. Simple caching methods place recently read-in data into the cache with the hopes that this data will be read again so it can be satisfied from cache. Ok, but far from efficient and optimal. IntelliMemory takes a more heuristic approach using two main factors. One, in the background, it is determining what data is getting read most often to ensure a high cache hit rate and two, using analytics, IntelliMemory knows that certain data patterns will provide better performance gains than others. Combining these two factors, IntelliMemory will use your valuable memory resources to get the optimal caching performance gains for each individual system. 

Another important innovation is the dynamic determination of how much of the system’s valuable memory resource to use. Unlike some caching technologies that require you to allocate a specific amount of memory for caching, IntelliMemory will automatically use just what is available and not being used by other system and user processes.   And if any system or user processes need  the memory, IntelliMemory dynamically gives it back so there is never a memory contention issue.  In fact, IntelliMemory always leaves a buffer of memory available, at least 1.5 GB at a minimum. For example, if there is 4GB available memory in the system, IntelliMemory will use at most 2.5GB of this and will dynamically release it if any other processes need it, then use it again when it becomes available.  That’s one reason we trademarked the phrase Set It and Forget It® 

Developments like these put IntelliMemory caching above all others.  That’s why, when combined with our patented IntelliWrite® technology, we’ve helped millions of customers achieve 30-50% or more performance gains on their Windows systems.  Frankly, some people think it’s magic, but if you’ll pardon my assertion, it’s really just innovative thinking.

For Larger V-locity Deployments: Getting Up and Running Using V-locity Management Console (VMC)

by Spencer Allingham 18. June 2019 05:32

V-locity® I/O Reduction software is designed to solve and prevent application performance degradation at the source, relieving stress and frustration from user complaints and reliability issues. V-locity eliminates the two big I/O inefficiencies in a virtual environment that generates a minimum of 30-40% I/O traffic chewing up storage IOPS and slowing down your system. Installing V-locity 7 is a quick, easy and effective fix, no reboot required. The first step to improving your server performance is downloading V-locity and starting your Proof of Concept.

 

Here are some helpful tips that will set you up to get the very best results

1. Login to your account to access your V-locity software OR download a free 30-day trial of the software.

2. Make sure you are using Windows Server 2008 R2 or later.

3. Ensure there is at least 4 GB of Available Physical Memory on each machine when checking MSINFO32.EXE (System Information Report) at a peak load time. Note: It is necessary to limit the amount of memory that certain applications can take in order to leave at least 4 GB of memory free. Examples are SQL server, Exchange and Oracle on Windows.

4. Plan to install V-locity on as many Windows machines that share the same storage as possible. If V-locity is only installed onto a small number of machines, you will only be optimizing a small percentage of the overall storage I/O traffic, which is likely to limit the results.

5. IMPORTANT: If using V-locity in a firewalled environment, make sure the correct ports are open. The following ports need to be open for incoming and outgoing TCP packets between the V-locity Management Console and the other machines running V-locity: 135, 137, 139, 443, 445, 5985, 13568-13572, 3102

6. Set aside a dedicated VM for the V-Locity Management Console (VMC). This should be running at least Windows Server 2008 R2 and have Internet Explorer 9 or later installed, or Chrome or Firefox.

Video Tutorials

This is a series of video tutorials to make sure your POC goes smoothly.

1. How to install the V-locity 7 Management Consoles: https://youtu.be/IpdI6aU_8wI

2. How to open the V-locity 7 Management Console for the first time: https://youtu.be/0_mtsZlu-YM

3. How to add a license to the V-locity 7 Management Console: https://youtu.be/OZ2sa4Bb8_w

4. How to deploy V-locity 7 from the V-locity Management Console: https://youtu.be/i6ogxKHia9o

5. How to gather V-locity 7 dashboard report data for analysis: https://youtu.be/RusU_rkNX_U

 

Once you have gathered the V-locity 7 dashboard report data, email this to your sales rep or sales@condusiv.com for additional analysis.

 

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