US11836083B2 - Memory Access Tracking using A Peripheral Device - Google Patents > 자유게시판

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Computing programs generally observe entry to reminiscence pages by hardware or software program. Memory-page monitoring is useful in a wide number of use-circumstances, e.g., in migration of Virtual Machines (VMs) between bodily compute nodes, in page-swapping between a memory and a storage device, in varied caching schemes, to call only a few examples. An embodiment of the present invention that's described herein supplies a compute node together with a reminiscence, buy itagpro a processor iTagPro support and a peripheral machine. Direct Memory Access (DMA), and to notify the processor of the second reminiscence pages which can be accessed using DMA. In nonetheless one other embodiment, the peripheral gadget is to notify the processor of the second memory pages by reporting respective addresses of the second reminiscence pages. Using a peripheral device, one or more second memory pages are accessed immediately within the memory using Direct Memory Access (DMA), and the processor is notified of the second reminiscence pages that are accessed utilizing DMA.

One or more reminiscence pages are accessed immediately, the peripheral system using Direct Memory Access (DMA), and the processor is notified of the memory pages which can be accessed using DMA. FIG. 2 is a movement chart that schematically illustrates a way for tracking memory pages, in accordance with an embodiment of the present invention. FIG. Three is a block diagram that schematically illustrates migration of a Virtual Machine (VM) between compute nodes, in accordance with an embodiment of the current invention. Embodiments of the present invention which can be described herein provide improved methods and programs for tracking memory-web page entry in a compute node. "dirty pages," and the 2 phrases are used interchangeably herein. "dirty page," and the definition of when a web page is not considered soiled, may differ relying on the appliance. CPU of the compute node. DMA into the CPU reminiscence. Such partial monitoring of dirty pages is problematic and should lead to information inconsistency and suboptimal performance.

In this manner, the processor is in a position to totally track all dirty pages within the memory, regardless of the entity that rendered these pages soiled. Several examples are described herein. FIG. 1 is a block diagram that schematically illustrates a compute node 20 that tracks soiled pages in accordance with an embodiment of the current invention. FIG. 1 is relatively generic, within the sense that it isn't application-particular and iTagPro support is relevant to numerous sorts of compute nodes and buy itagpro peripheral units. Several concrete examples are described additional below. Compute node 20 may comprise, for instance, a server in a knowledge middle, a workstation, or some other appropriate kind of compute node. Node 20 includes a processor 24 and a memory 28 . 24 contains a Central Processing Unit (CPU), iTagPro technology however the processor could alternatively comprise a Graphics Processing Unit (GPU) every other appropriate sort of processor. Memory 28 comprises a Random-Access Memory (RAM) in the current example, however may alternatively comprise some other suitable kind of memory.

Node 20 further contains a peripheral machine 32 that communicates with processor 24 and buy itagpro with reminiscence 28 over a peripheral interface 36 . Peripheral device 32 might comprise, for example, travel security tracker a network adapter such as an Ethernet Network Interface Controller (NIC), an InfiniBand Host Channel Adapter (HCA), a sensible-NIC, buy itagpro a knowledge Processing Unit (DPU), a network-enabled GPU, or some other appropriate type of community adapter. 32 could comprise a storage system, comparable to a Solid-State Drive (SSD) or itagpro locator a Small Computer System Interface (SCSI) disk. Peripheral interface 36 could comprise, for buy itagpro instance, a Peripheral Component Interconnect specific (PCIe) bus. 24 runs software program 40 that, among other tasks, accesses memory pages forty four in memory 28 . Software forty may comprise, for instance, a hypervisor, one or more VMs, a number of applications ("apps"), an OS, and/or every other suitable type of software program. Software forty could learn and/or write memory pages forty four , buy itagpro as applicable. Forty four are also referred to easily as "pages," for brevity.