Virtualization is the backbone of cloud computing,which is a developing and widely used paradigm.Byfinding and merging identical memory pages,memory deduplication improves memory efficiency in virtualized systems.Kern...Virtualization is the backbone of cloud computing,which is a developing and widely used paradigm.Byfinding and merging identical memory pages,memory deduplication improves memory efficiency in virtualized systems.Kernel Same Page Merging(KSM)is a Linux service for memory pages sharing in virtualized environments.Memory deduplication is vulnerable to a memory disclosure attack,which uses covert channel establishment to reveal the contents of other colocated virtual machines.To avoid a memory disclosure attack,sharing of identical pages within a single user’s virtual machine is permitted,but sharing of contents between different users is forbidden.In our proposed approach,virtual machines with similar operating systems of active domains in a node are recognised and organised into a homogenous batch,with memory deduplication performed inside that batch,to improve the memory pages sharing efficiency.When compared to memory deduplication applied to the entire host,implementation details demonstrate a significant increase in the number of pages shared when memory deduplication applied batch-wise and CPU(Central processing unit)consumption also increased.展开更多
反复安装卸载软件会让我们的操作系统变得凌乱不堪，出现系统冲突和软件故障的几率也大大增加。此时就只能重新安装系统，或使用Ghost等软件恢复系统的备份。除了这两种方法外，还可以使用虚拟机为计算机创造一个试验基地，在这个试验...反复安装卸载软件会让我们的操作系统变得凌乱不堪，出现系统冲突和软件故障的几率也大大增加。此时就只能重新安装系统，或使用Ghost等软件恢复系统的备份。除了这两种方法外，还可以使用虚拟机为计算机创造一个试验基地，在这个试验平台中安装卸载软件，可以进行任何测试。今天，就让我们一起来体验一下微软公司最新推出的虚拟机软件——Microsoft Virtual PC 2004。展开更多
在计算机网络实验室的实践教学中,常常遇到难以满足安装操作系统、组网、测试网络软件等需求的难题。介绍了VMWare的工作原理,分析它的优势和特性,提出基于VMWare建立虚拟网络实验室的思路。通过VMWare创建多个虚拟子系统,在其中安装Li...在计算机网络实验室的实践教学中,常常遇到难以满足安装操作系统、组网、测试网络软件等需求的难题。介绍了VMWare的工作原理,分析它的优势和特性,提出基于VMWare建立虚拟网络实验室的思路。通过VMWare创建多个虚拟子系统,在其中安装Linux、Windows Server 2003等不同种类的操作系统。这些虚拟子系统通过多种方便、灵活的方式进行通讯,形成复杂和多变的测试环境,可以完成各种复杂的网络实验。VMWare在实践中使用方便、性能强大,能很好地满足计算机网络实验室的要求。展开更多
文摘Virtualization is the backbone of cloud computing,which is a developing and widely used paradigm.Byfinding and merging identical memory pages,memory deduplication improves memory efficiency in virtualized systems.Kernel Same Page Merging(KSM)is a Linux service for memory pages sharing in virtualized environments.Memory deduplication is vulnerable to a memory disclosure attack,which uses covert channel establishment to reveal the contents of other colocated virtual machines.To avoid a memory disclosure attack,sharing of identical pages within a single user’s virtual machine is permitted,but sharing of contents between different users is forbidden.In our proposed approach,virtual machines with similar operating systems of active domains in a node are recognised and organised into a homogenous batch,with memory deduplication performed inside that batch,to improve the memory pages sharing efficiency.When compared to memory deduplication applied to the entire host,implementation details demonstrate a significant increase in the number of pages shared when memory deduplication applied batch-wise and CPU(Central processing unit)consumption also increased.
文摘反复安装卸载软件会让我们的操作系统变得凌乱不堪，出现系统冲突和软件故障的几率也大大增加。此时就只能重新安装系统，或使用Ghost等软件恢复系统的备份。除了这两种方法外，还可以使用虚拟机为计算机创造一个试验基地，在这个试验平台中安装卸载软件，可以进行任何测试。今天，就让我们一起来体验一下微软公司最新推出的虚拟机软件——Microsoft Virtual PC 2004。
文摘在计算机网络实验室的实践教学中,常常遇到难以满足安装操作系统、组网、测试网络软件等需求的难题。介绍了VMWare的工作原理,分析它的优势和特性,提出基于VMWare建立虚拟网络实验室的思路。通过VMWare创建多个虚拟子系统,在其中安装Linux、Windows Server 2003等不同种类的操作系统。这些虚拟子系统通过多种方便、灵活的方式进行通讯,形成复杂和多变的测试环境,可以完成各种复杂的网络实验。VMWare在实践中使用方便、性能强大,能很好地满足计算机网络实验室的要求。
