virtualization

问题 Does anyone know of a ListView implementation that support UI Virtualization when grouping is enabled? By default the VirtualizingStackPanel is disabled when grouping is setup. It seems that Microsoft is not going to implement this within v4.0 of the .NET Framework so I am look for alternate solutions. 回答1: I have located a sample at Grouping and Virtualization MSDN Code Sample that converts the grouped ListView into a flat list which supports virtualization. However I can't work out how to

问题 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

问题 I am using SelectionChanged event of ListBox , but it "doesn't work". Here is repro: public partial class MainWindow : Window { readonly List<Item> _items = new List<Item> { new Item(), ... // add 20 more, to have selected item outside of visible region new Item(), new Item { IsSelected = true }, new Item(), }; void listBox_SelectionChanged(object sender, SelectionChangedEventArgs e) => Debug.WriteLine($"Changed {e.AddedItems.Count}/{e.RemovedItems.Count}"); void button_Click(object sender,

问题 In 64-bit Linux, IA-32E paging is used with 4 levels of paging structures ( PML4 / PDPT / PD / PT ). The entries in the former three structures give the physical address of the corresponding next structure. My question is that will the physical addresses of all these paging structures be mapped in the paging table? If they are mapped, in which mode ( User / Supervisor )? Thanks very much! I captured some specific memory addresses which a vcpu have accessed during a period in KVM . These

问题 I am trying to create a Dockerfile/Image which has all softwares necessary to set up a Java environment. As per work requirement, I have to use CentOS6 as my base image and Java6, Tomcat6, Apache2.2, Maven 3.2.5 and Eclipse. Currently I have below as the Dockerfile: #centos6 FROM centos:6 #Java RUN yum -y install java-1.6.0-openjdk-devel.x86_64 VOLUME ["/var/www/thml", "/etc/httpd/conf", "/etc/httpd/conf.d", "/tmp/applications", "/usr/local/tomcat", "/usr/local/maven"] EXPOSE 80 443

问题 I'm running Windows 8 in QEMU KVM, and two things make it not very usable. First: mouse is slow (it lags behind movement) and I see the most mouse. That means every time I move, first I see host mouse moving and then guest mouse slowly gets under it. Second: keyboard doesn't handle holding keys well. So let's say I press 'a' for several seconds. Normally I would expect a's to be typed every x miliseconds. In QEMU, only one a is written at start, and only when I release the key, all others are

问题 I am analyzing the effect of allocation across virtual pages while creating a 2-D array of dimension PageSize x PageSize. My machine's page size is 4096. I have an array of 4096 integer pointers(columns), pointing to 4096 integers(rows). I want to begin the allocation for the first integer pointer at a new virtual page. How can I identify if the current memory location is a new page or not? Once, I have identified that, I believe I can write some garbage values and move the pointer to a new

问题 I'm having an issue storing the output of docker run -it -d -p 43211:3000 --name appname -h hostname -v $PWD/local_dir:/root/remote_dir repo/imagename in a BASH varibale. I tried `backticks`, I also tried running it like the official docs say BASH_VAR=$(docker run ...) , I even tried storing the output in a file with docker run --...>$FILE_DESCRIPTOR , but no luck storing the error situation, the situation when the name is already used by another container, like so: $ FATA[0000] Error

问题 Purpose I want ansible to provision virtual box vm's on my windows 8 machine [via Vagrant]. Everything needs to run locally and since Ansible doesn't run on Windows, I bootstrap a debian vm with ansible as the control machine. This code served as an example. After struggling with the system I got it somewhat working, but not completely (although ansible doesn't tell me). Question What configuration is required for a multi-machine setup using ansible [in a vm], vagrant and virtualbox [on

问题 With VMs being slave to whatever the host machine is providing, what compiler flags should be provided to gcc? I would normally think that -march=native would be what you would use when compiling for a dedicated box, but the fine detail that -march=native is going to as indicated in this article makes me extremely wary of using it. So... what to set -march and -mtune to inside a VM? For a specific example... My specific case right now is compiling python (and more) in a linux guest inside a