Abstract: Methods and systems for routing control blocks is provided. One method includes receiving a control block from a computing device at an adapter having a plurality of hardware engines for processing control blocks, where the control blocks are to read data, write data, obtain status for an input/output request and perform a management task; evaluating the control block by the adapter to determine that the control block is a continuation control block for data transfer using more than one control block; is a direct route control block for a specific hardware engine; or is for a management task; routing the control block to a same hardware engine when the control block is a continuation control block; and routing the control block to a master hardware engine from among the plurality of hardware engines, when the control block is for the management task.

Abstract: Adaptive queued locking for control of speculative execution is disclosed. An example apparatus includes a lock to: enforce a first quota to control a number of threads allowed to concurrently speculatively execute after being placed in a queue; and in response to the first quota not having been reached, enable a first thread from the queue to speculatively execute; and an adjuster to change a first value of the first quota based on a result of the speculative execution of the first thread.

Abstract: Embodiments of the present invention provide approaches for allowing management of a virtual machine (VM) by multiple cloud providers in a networked computing environment (e.g., a cloud computing environment). Specifically, in a typical embodiment, a system identifies a set of provisioned resources of a VM managed by a first cloud provider, generates a set of artifacts containing information for a second cloud provider to allow co-management of the VM by the first cloud provider and the second cloud provider, and provides access to the set of provisioned resources of the VM to the second cloud provider. As such, a single virtual machine may be managed by multiple (e.g., geographically distinct) cloud providers to cooperatively and selectively execute VM operations because the end product (i.e., VM) from the first and second cloud providers is the same.

Abstract: Managing exclusive control of a shareable resource includes publishing a claim non atomically to a lock by a thread that is next to own the lock in an ordered set of threads that have requested to own the lock. The claim includes a structure capable of being read and written only in a single memory access. A determination is made of whether the next owning thread has been pre-empted. Responsive to the determination, the next owning thread of the lock acquires the lock if the next owning thread has not been pre-empted and retries acquisition of the lock if the next owning thread has been pre-empted. Responsive to the next owning thread being pre-empted, a subsequent owning thread acquires the lock unfairly and atomically, consistently modifies the lock such that a next lock owner can determine that the next lock owner has been preempted.

Abstract: An application manager receives or defines a service specification for a first application that defines a set of required computing resources that are necessary to run each application component of the first application. A resource supply manager in communication with the application manager manages a plurality of computing resources in a shared computing environment.

Abstract: A host computing device can include a host domain that includes an agent for configuring the operation and/or functionality of virtual machine instances and/or operating systems associated with the instances, which may be heterogeneous (i.e., running different operating systems than each other). One or more data volumes associated with the host machine can include an image of an operating system. In an embodiment the agent can access the image of the operating system and configure operating system settings, add data, and/or remove data.

Abstract: The present disclosure is related to systems, methods, and non-transitory machine readable media for alerting with duplicate suppression. An example non-transitory machine readable medium can store instructions executable by a processing resource to cause a computing system to receive an alert at a first virtual computing instance (VCI) from a second VCI, compare the alert with at least one previously received alert to determine if the alert is a duplicate alert, and send the alert to an alert notification queue associated with the first VCI in response to a determination that the alert is not a duplicate alert. In some embodiments, the medium can store instructions to confirm that the alert has been sent in response to the determination that the alert is a duplicate alert.

Abstract: The following relates generally to computer system efficiency improvements. Broadly, systems and methods are disclosed that improve efficiency in a cluster of nodes by efficient processing of tasks among nodes in the cluster of nodes. Assignment of tasks to compute nodes may be based on learned CPU capabilities and I/O bandwidth capabilities of the compute nodes in the cluster.

Abstract: Systems and methods are disclosed for switching between an assigned device and an emulated device. An example system includes a device-specific driver and a pass-through device driver included in a hypervisor. A common host backend is bound to at most one of the device-specific driver and pass-through device driver at a time. The assigned and emulated devices access the common host backend. The system also includes a switch module that sends one or more communications to a guest to cause the guest to switch from using at most one of the assigned device or the emulated device to the other of the at most one of the assigned device or the emulated device.

Abstract: A system for managing storage devices, includes a plurality of nodes that implement a virtualization environment, each node of the plurality of nodes comprising a hypervisor, a service virtual machine that sits above the hypervisor, and one or more user virtual machines that sit above the hypervisor; a plurality of storage devices that are accessed by the user virtual machines via the service virtual machines, wherein a first node of the plurality of nodes comprises a first hypervisor, a first service virtual machine and a first set of one or more user virtual machines, wherein a second node of the plurality of nodes comprises a second hypervisor, a second service virtual machine and a second set of one or more user virtual machines, wherein the first hypervisor and the second hypervisor are of different types, and wherein the first virtual machine and the second service virtual machine are of the same type.

Abstract: A virtual machine (VM) management utility tool may deploy an object model that may persist one or more virtual machine dependencies and relationships. Through a web front-end interface, for example, the VMs may be started in a specific order or re-booted, and the tool automatically determines the additional VMs that need to be re-booted in order to maintain the integrity of the environment. Through the web interface, for example, the object model may be managed, and start-up orders or VM dependencies may be updated. For VMs that may not start under load, the object model may block access to the VM until the VM is fully initialized.

Abstract: Managing virtual and real machines through a provisioning system. The provisioning system allows a user to create and manage machines through a “self-service” approach. The provisioning system interacts with one or more agents that manage the lifecycle of a machine. The system may provide templates that enable a user to readily create a virtual machine. The system may also include interfaces for administrators to manage virtual and real machine resources.

Abstract: One embodiment of the present invention sets forth a technique for instruction level execution preemption. Preempting at the instruction level does not require any draining of the processing pipeline. No new instructions are issued and the context state is unloaded from the processing pipeline. Any in-flight instructions that follow the preemption command in the processing pipeline are captured and stored in a processing task buffer to be reissued when the preempted program is resumed. The processing task buffer is designated as a high priority task to ensure the preempted instructions are reissued before any new instructions for the preempted context when execution of the preempted context is restored.

Abstract: Burst throttling methods may be used manage computing resources of a data storage service. Tokens may represent I/O operations executed by a customer of the data storage service. A global token bucket may contain a set of tokens representing the overall I/O operation capacity of the data storage service. Additionally, a work token bucket may contain a set of tokens for a given logical volume maintained by the data storage service. When I/O request are received the data storage service may determine if the I/O request is a member of a sequence and removed a reduced number for tokens from the work token bucket as a result. Furthermore, if there is sufficient capacity the data storage service may charge a reduced number of tokens to the work token bucket.

Abstract: A method for establishing redundant connections for a virtual machine, which comprises: obtaining a plurality of storage nodes storing a same virtual machine image of the virtual machine; determining at least two storage nodes from the plurality of storage nodes, so that connections between a compute node provisioning the virtual machine and each of the at least two storage nodes have minimum correlation; and establishing connections between the compute node and the at least two storage nodes respectively. The present invention further discloses the corresponding apparatus.

Abstract: A system for implementing storage for a virtualization environment, including a plurality of nodes, wherein the plurality of nodes implements a virtualization environment, a plurality of storage devices that are accessed by virtual machines in the virtualization environment, and wherein the plurality of storage devices comprises a local storage device that is locally attached to one of the plurality of nodes, and in which the local storage device can be managed as part of a global storage space for the virtualization environment.

Abstract: A method of linking a task of an electronic device and the electronic device are provided. The method includes determining whether generation of an event satisfying a predetermined condition is detected; selecting another electronic device that is linkable to the electronic device when the generation of the event satisfying the predetermined condition is detected; and generating task environment information of an application and transmitting the task environment information to the other selected electronic device.

Abstract: Software that dynamically updates virtual machine templates at deterministic intervals in order to reduce patching time, by performing the following operations: (i) identifying a virtual machine (VM) provisioned according to a first VM template; (ii) initiating a patching process that applies a set of patch(es) to the VM, thereby creating a patched VM; (iii) determining that an amount of time taken to complete the patching process is greater than a predetermined threshold; and (iv) responsive to determining that the amount of time taken to complete the patching process is greater than the predetermined threshold, generating a second VM template based, at least in part, on the patched VM.

Abstract: This disclosure describes a system for Single Root I/O Virtualization (SR-IOV) pass-thru for network packet processing via a virtualized environment of a device. The system includes a device comprising a virtualized environment and a plurality of virtual machines having a virtual network interface for receiving and transmitting network packets. A driver for the physical network interface of the device creates a plurality of virtual devices corresponding to the physical network interface, which appear as a Peripheral Component Interconnect (PCI) device to the virtualized environment. A virtual device of the plurality of virtual devices is assigned via the virtualized environment to each virtual machine of the plurality of virtual machines. The virtual machine uses the virtual device assigned to the virtual machine, to receive and transmit network packets via the physical network interface of the device.

Abstract: Systems and methods for transaction/file-based management of a plurality of processes associated with various jobs are provided. Through the management of discrete applications, a file distribution manager/scheduler orchestrates automated execution of different types of jobs. The processes executed for the various processes can vary based on job type, or other parameters.