摘要:
Systems and methods for optimizing operation of a physical device in a virtualized computing environment are provided. The method comprises monitoring instructions issued by an application running on a virtual machine's (VM) operating system, wherein the VM is hosted by a hypervisor providing access to a physical device connected to a virtualized computing environment; wherein a device driver supported by the operating system issues one or more instructions to an emulated device supported by the hypervisor to control the physical device according to the issued instructions, wherein the emulated device's registers are implemented in memory of the hypervisor and the instructions issued by the device driver are stored in said registers, wherein the hypervisor handles the instructions, in response to learning that the instructions are stored in said registers.
摘要:
A method for managing memory in a nested virtualization environment is provided. The method comprises implementing a first virtual machine (VM) for a first software such that a first guest memory is allocated to the first software; maintaining a first data structure to translate one or more memory addresses in the first guest memory to corresponding memory addresses in a physical memory; maintaining a second data structure to translate one or more memory addresses in the second guest memory to corresponding memory addresses in the physical memory. The first software implements a second VM for a second software such that a second guest memory is allocated to the second software and maintains a third data structure to translate one or more memory addresses in the second guest memory to corresponding memory addresses in the first guest memory.
摘要:
Methods and systems for improving performance in a virtualization environment. The method comprising: detecting, by a first software, a first set of features supported by a hardware device, wherein the first software runs on the hardware device; detecting a second set of features with which to run a second software, wherein the second software is launched by the first software with the second set of features; exposing one or more features in the second set of features to the second software, wherein the second software detects and enables the exposed features for a third software launched by the second software; and emulating a first feature without causing a trap such that control is transferred to the second software, in response to determining that the first feature is an exposed feature not included in the first set of features, wherein one or more sensitive events are associated with the first feature.
摘要:
Methods, apparatus, and products for managing virtual addresses of blade servers in a data center are disclosed that include storing by a blade server management module (‘BSMM’), in non-volatile memory of a blade server, a parameter block, the parameter block including one or more virtual addresses for communications adapters of the blade server and one or more action identifiers, each action identifier representing a type of address modification; detecting, by a basic input-output system (‘BIOS’) module of the blade server upon powering on the blade server, the parameter block; and modifying, by the BIOS module of the blade server in dependence upon the one or more action identifiers of the parameter block, an address of at least one communications adapter of the blade server.
摘要:
Methods, apparatus, and products for managing virtual addresses of blade servers in a data center are disclosed that include storing, by a blade server management module (‘BSMM’) in non-volatile memory of a blade server, a parameter block, the parameter block including one or more virtual addresses for communications adapters of the blade server and one or more action identifiers; detecting, by a BIOS module of the blade server upon powering on the blade server, the parameter block; disabling, by the BIOS module, in dependence upon the one or more action identifiers of the parameter block, an original address of at least one communications adapter of the blade server; and setting, by the BIOS module, an address of the communications adapter to a virtual address included in the parameter block.
摘要:
A computer implemented method for handling events in a multi-core processing environment is provided. The method comprises handling an event by a second application running on a second core, in response to determining that the event is initiated by a first application running on a first core; and running a third application on the first core, while the first application is waiting for the event to be handled by the second application.
摘要:
A para-virtualization method is provided. The method comprises implementing a virtual machine (VM) for guest software running on first host software. In response to a privileged instruction, the guest software causes a first VM exit. If the first host software is not running directly on hardware, the privileged instruction is managed without causing a second VM exit. Otherwise, the privileged instruction is managed normally.
摘要:
Power and redundancy management policies are applied individually to the tiers of redundant servers of an application service such that power is reduced while maintaining a high level of system availability. Servers which are determined to be relatively inactive are moved to a free pool. Certain servers of the free pool are maintained in a hot standby state, while others are powered-off or set to operate in a low power mode. During times of high load, the servers in the hot standby state can be provisioned quickly into the application service.
摘要:
A computer-implemented framework and method for managing application complexes comprising multiple tiers of servers, where servers in a common tier run an identical application and servers in different tiers run different applications, and all the servers work together to provide a specific service, the application complex being definable via an application complex type. The framework has a plugin interface adapted for connection to the framework of a plugin in respect of each application complex type, the plugin encapsulating a relationship between disparate resources composing the respective application complex type and respective characteristics of said resources. A user interface in the framework provides general tasks that are independent of operational semantics of the application complex and is responsive to user operations for interfacing with the framework for defining an instance of the application complex and allowing the user to populate the application complex with servers.
摘要:
A para-virtualization method is provided. The method comprises implementing a virtual machine (VM) for guest software running on first host software. In response to a privileged instruction, the guest software causes a first VM exit. If the first host software is not running directly on hardware, the privileged instruction is managed without causing a second VM exit. Otherwise, the privileged instruction is managed normally.