On many moonless night, I'll be out there, next to my telescope images of clusters, nebulae and galaxies grab for my amateur astrophotography. But there is a balance to create a big picture vs. just wasting time. Once it gets past 2:00 or the temperature below 0 Fahrenheit, I'm done. But I have plenty of pictures to create an OK photo or a great photo?
look to take a photo of deep-sky objects, you need to let your camera capture much light by the guide shutter open for many minutes at a time. Of course, at the same time, you also build the noise on the imaging up chip.Here an example of each is 0 seconds Image of M27 - The Dumbbell Nebula
If you share multiple pictures take and stack, increase the signal while reducing the noise. This is a stack of 29 images, each 2 minutes in length 58
for minutes The picture was pretty much clear. The signal was stronger and the noise was reduced. Of course, the more pictures you and stack to achieve the stronger signal, but the noise is reduced only take the square root of the number of images. Do not worry, I will not go for this in mathematics, because this graph makes very clear the concept.
How do I take more frames is such that noise. But to keep the noise to have drop by another factor, I have to make many, many, many more images. Now I'm going to spend hours of time the additional recording of images, processing of images and all for a minimal improvement in image quality. And while I'm out with the telescope, I reduce the risk of frostbite (true story) to go hypothermia or eaten by a bear, a wolf or a moose ( "Yah sure you betcha. Don -Chya-no I in da Minnesoda ") .
The same concept applies for XenApp and XenDesktop deployments true. You can optimize and then you can optimize .
There are hundreds of ways you can optimize XenApp better. Some of these are simple, proven and is a significant, positive impact on either the user experience or resource use have. But there is a point of diminishing returns. For example, what benefit I will, if I disable a Windows service? Probably not much. And in fact, the more you tweak, the greater the possibility of something dangerous to do the health of your system. I have often heard that someone just some harmless Windows service off a few months later to find out that a new application or update that requires service.
Does this mean that stick with the default configuration? OMG NO.
Start with the great items. Start with these elements, and are demonstrably been shown to improve the experience or to reduce the use, without potentially compromising the stability of the system. I'm talking about things like
- Provisioning Services RAM Cache: This will not only reduce the memory usage, but it will actually improve the user experience. In the simplest form I can offer ... Disk slow RAM is fast. Use RAM.
- Microsoft Lync / Skype for Business Optimization: How do we make more people video calls with Lync and Skype for business, we see a hit on our processor. This XenApp / XenDesktop function, we are drastically able resource consumption reduced to our host servers
- Session prelaunch. Logon problems might be one of the most common issues for each system, and I do not even talk about XenApp / XenDesktop. But at least with XenApp, we can logon delays in Session prelaunch overcome
- Policy Templates: XenApp and XenDesktop have a very powerful policy engine, allowing you to customize the user experience with the scenario. If you are outside, get this, if you are on this unit externally with this configuration, you can do that if you belong to this group, you can do something else, if you are in this subnet, this desktop group are, have this day, you will receive this configuration, and if your iOS device is jailbroken, you can only do one thing. It is highly efficient, which means that many implementations configure anything. Here is a great starting point the latest policy templates in XenApp & XenDesktop 7.6 Feature Pack 3, as they are tailored for a particular application to use.
Now do not get me wrong, go and optimize to the system as much as your heart desires, but at a minimum, you should focus on those items that have a major impact can.
XenApp Best Practice # 2 : For the best combination of suitably usability and resource usage optimization
Daniel ( @djfeller episodes)
XenApp best practices
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