Patent application number | Description | Published |
20110119668 | MANAGING VIRTUAL HARD DRIVES AS BLOBS - Cloud computing platforms having computer-readable media that perform methods to manage virtual hard drives as blobs are provided. The cloud computing platform includes fabric computers and blob stores. The fabric computers execute virtual machines that implement one or more applications that access virtual hard drives. The data in the virtual hard drives is accessed, via a blob interface, from blobs in the blob stores. The blob stores interface with a driver that translates some application input/output (I/O) requests destined to the virtual hard drives to blob commands when accessing data in the virtual hard drives. | 05-19-2011 |
20110225458 | GENERATING A DEBUGGABLE DUMP FILE FOR AN OPERATING SYSTEM KERNEL AND HYPERVISOR - Cloud computing platforms having computer-readable media that perform methods to generate debuggable dump files are provided. The cloud computing platform includes server devices running operating system kernels. Optionally, the server may include a hypervisor. The operating system kernel receives a command to generate a debuggable dump file. In response, the operating system estimates memory requires to store the requested memory pages, allocates an appropriately sized buffer, and freezes computation. A hypervisor is present and if its memory pages are requested, the hypervisor freezes its computation. The hypervisor stores its memory pages in the buffer and resumes computation. The operating system kernel stores its pages to the buffer in priority order and resumes its computation. The contents of the buffer are written out as a debuggable dump file. | 09-15-2011 |
20110225459 | GENERATING A DEBUGGABLE DUMP FILE FOR A VIRTUAL MACHINE - Cloud computing platforms having computer-readable media that perform methods to generate debuggable dump files are provided. The cloud computing platform includes at least one server having a host virtual machine, guest virtual machine, and hypervisor. The host virtual machine receives a command to generate the debuggable dump file. In response, it suspends all virtual processors executing on the guest virtual machine. The memory pages of the suspended virtual machine are written into a debuggable dump file, and the suspended processors are resumed at an appropriate time. | 09-15-2011 |
20110292792 | Applying Policies to Schedule Network Bandwidth Among Virtual Machines - Computerized methods, systems, and computer-storage media for allowing virtual machines (VMs) residing on a common physical node to fairly share network bandwidth are provided. Restrictions on resource consumption are implemented to ameliorate stressing the network bandwidth or adversely affecting the quality of service (QoS) guaranteed to tenants of the physical node. The restrictions involves providing a scheduler that dynamically controls networking bandwidth allocated to each of the VMs as a function of QoS policies. These QoS policies are enforced by controlling a volume of traffic being sent from the VMs. Controlling traffic includes depositing tokens into token-bucket queues assigned to the VMs, respectively. The tokens are consumed as packets pass through the token-bucket queues. Upon consumption, packets are held until sufficient tokens are reloaded to the token-bucket queues. | 12-01-2011 |
20130132057 | THROTTLE DISK I/O USING DISK DRIVE SIMULATION MODEL - Computerized methods, systems, and computer-storage media for throttling requests from virtual machines (VMs) to a hard-disk drive (HDD) are provided. When a request for disk I/O is received from a VM, a disk-drive model that simulates performance characteristics of the HDD is accessed. During access, the disk-drive model's estimation of HDD parameters and the disk-drive model's estimation of a current state of a disk head of the HDD are gathered. A projected execution time to carry out the request is computed as a function of the estimated HDD parameters and the estimated current state of the disk head. Also, an actual execution time to carry out the request is measured upon allowing the request to pass to the HDD. Using a comparison of the projected execution time and the actual execution time, the traffic of the requests from the VMs is throttled. | 05-23-2013 |
20130254766 | OFFLOADING PACKET PROCESSING FOR NETWORKING DEVICE VIRTUALIZATION - The present invention extends to methods, systems, and computer program products for offloading packet processing for networking device virtualization. A host maintains rule set(s) for a virtual machine, and a physical network interface card (NIC) maintains flow table(s) for the virtual machine. The physical NIC receives and processes a network packet associated with the virtual machine. Processing the network packet includes the physical NIC comparing the network packet with the flow table(s) at the physical NIC. When the network packet matches with a flow in the flow table(s) at the physical NIC, the physical NIC performs an action on the network packet based on the matching flow. Alternatively, when the network packet does not match with a flow in the flow table(s) at the physical NIC, the physical NIC passes the network packet to the host partition for processing against the rule set(s). | 09-26-2013 |
20130298123 | APPLYING POLICIES TO SCHEDULE NETWORK BANDWIDTH AMONG VIRTUAL MACHINES - Computerized methods, systems, and computer-storage media for allowing virtual machines (VMs) residing on a common physical node to fairly share network bandwidth are provided. Restrictions on resource consumption are implemented to ameliorate stressing the network bandwidth or adversely affecting the quality of service (QoS) guaranteed to tenants of the physical node. The restrictions involves providing a scheduler that dynamically controls networking bandwidth allocated to each of the VMs as a function of QoS policies. These QoS policies are enforced by controlling a volume of traffic being sent from the VMs. Controlling traffic includes depositing tokens into token-bucket queues assigned to the VMs, respectively. The tokens are consumed as packets pass through the token-bucket queues. Upon consumption, packets are held until sufficient tokens are reloaded to the token-bucket queues. | 11-07-2013 |
20130305005 | MANAGING CIRTUAL HARD DRIVES AS BLOBS - Cloud computing platforms having computer-readable media that perform methods for facilitating communications with storage. A request having a first-interface format to access storage is intercepted. The first interface format of the request supports access to a virtual hard drive (VHD). The request is translated to a blob request having a blob interface format. The blob interface format of the blob request supports access to a plurality of blobs of data in a blob store. The blob request is communicated to a blob interface such that the blob request is executed in managing the plurality of blobs. | 11-14-2013 |