virtualization | 易学教程

Implementing a custom hypercall in kvm

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问题 I am very new to Virtualization and of late I have been trying to familiarize myself with the way VMMs operate and how hypercalls are made. Talking about which I plan to implement a new hypercall in KVM which is installed on my Ubuntu desktop, and in turn can be callable from the guest environment.With this hypercall I plan to just return a string saying "Hello World". At this point,I am clueless about how to make it happen.It would be really helpful if you could please guide me as to how do

How to Dockerize windows application

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i have a windows application which I want to containerize. Its a windows desktop application (not web application). I did some searching and found very little about containerizing desktop application. The application which I want to containerize works fine on WindowsServerCore. I have Windowsservercore image on my machine. I want to know how can I go about containerizing it. Any documentation or useful videos are available? when i completed dockerfile can i interact with my application gui??? how??? You can find tons of example of WindowsServiceCore-based applications in StefanScherer

RowVirtualization cause incorrect background color for rows

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I have a WPF application and there is a Datagrid in some pages. This datagrid needs to load 5000 rows at once (Pagination is not an option for me) and this takes ages. I set EnableRowVirtualization=True and the performance is acceptable now, but there is a problem here. In my datagrid I need to set different background colors to different rows depending on a column value (say STATUS), changing EnableRowVirtualization from False to True, caused incorrect coloring when I scroll. ----Edit---- Here is my XAML code: <my:DataGrid Name="dgDataGrid" DockPanel.Dock="Top" AutoGenerateColumns="False"

Slow down CPU to simulate slower computers in browser testing

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I'm trying to see how our web pages behave on an average customer's computer. We have not yet pinned down this configuration, but it's likely to be slower than what our developers and testers will have. I've seen answers to similar questions that suggest throttling bandwidth and using a VM where the memory has been limited, but do I also need to slow down the CPU? I am under the impression that the CPU will run fairly close to full speed, even in a VM. Are there virtual machine platforms that allow you to limit the CPU cycles? I saw one suggestion to run something like Folding @ Home, but I

HAXM error but vt-x is enabled

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When I am installing Intel HAXM I have the following error: This computer meets the requirements for HAXM, but Intel Virtualization technology (VT-x) is not turned on. HAXM cannot be installed until VT-x is enabled. So, I have checked my BiOS, VT-x is supported, and I enabled Intel virtualization (it wasn't before). I also have checked if it was really enabled with the Intel virtualization technology detection tool (Intel Processor Identification Utility) and it says: Intel(R) Virtualization Technology - Yes BUT when I try again to install HAXM I have the same error as the beginning of my

WPF Data virtualizing ListView

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问题 In our current WinForms app, we are displaying millions of records in ListView, using virtualization. Rows are loaded from DB as they are requested. This works well, with good performance. This is a showstopper for migrating to WPF for us. We need data virtualization in a ListView, like WinForms 2.0 has. Do you know a decent third-party control, or a relatively easy way of doing it with built-in controls? It doesn't need to be a DataGrid, a simple ListView will suffice. Note, I'm note talking

Virtualization not enabled in BIOS?

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When I start a multi-core virtual device in Genymotion, I get this: What is this virtualization technology and how can I enable it? My CPU: Intel Core i5-4440 You'll have to turn it on in your BIOS settings as you're turning on your computer. Not all BIOS look like this screenshot, but this is one example of what you're looking for: Copied from source: Enabling Intel VT-x and AMD-V virtualization hardware extensions in BIOS Enabling Intel VT-x and AMD-V virtualization hardware extensions in BIOS This section describes how to identify hardware virtualization extensions and enable them in your

Vagrant - Docker provider vs. docker provisioner

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问题 Can anybody explain to me the difference? Provisioner - is something doing provision - in docker installing, running, pulling containers. Provider - is something that runs the VM. I.e. VBox runs the ubuntu OS image. How can be Docker a provider? It runs directly some docker image? If I'm on windows there must some hidden usage of boot2docker right? When will I use each one? 回答1: Docker provisioner help to prepare environment: build and pull images, run containers if you need multiple

Is GPU pass-through possible with docker for Windows?

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I am trying to run an application inside a docker container in Windows 10. But I am not able to get the GPU working inside docker. I read that it needs "GPU Pass-through." How should I get around this? GPU access from within a Docker container currently isn't supported on Windows. You need nvidia-docker , but that is currently only supported on Linux platforms. GPU passthrough with Hyper-v would require Discrete Device Assignment (DDA), which is currently only in Windows Server, and ( at least in 2015 ) there was no plan to change that state of affairs. Hence, NVIDIA are not porting nvidia

How to Virtualize iOS on a Windows 7 computer

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问题 I'm trying to learn to code in Objective C, but I am not ready to commit to purchasing a Mac for just this purpose, seeing as I have a good Dell laptop. My computer has VMware installed on it, but I do not know how to actually go through the steps, and I do not know what I need to install or purchase(if absolutely necessary). Eventually, I hope to get a Mac, so this won't be needed, but until then, I want to find a way to compile Objective C so I can actually learn how to use it. Thanks. 回答1: