Patent application number | Description | Published |
20110082950 | COMPUTER SYSTEM AND COMPUTER SYSTEM INPUT/OUTPUT METHOD - Under the environment where a storage system is virtualized by Thin Provisioning technology or the like, it is difficult to statically estimate the I/O characteristics of the entire virtual volume, causing a problem that the effect of input/output control by a computer cannot be fully achieved by I/O scheduling that is based on the characteristics of a virtual volume unit. To solve the above problem, the computer system of the present invention acquires characteristics information of a storage apparatus in which there exists an actual storage area corresponding to a virtual volume storage area that is the access target when accessing the virtual volume, divides an I/O request with respect to the virtual volume by storage apparatus in a case where the I/O request spans multiple storage apparatuses, carries out I/O scheduling based on the acquired actual area characteristics information, and issues the I/O request directly to the storage apparatus in accordance with the I/O scheduling result. | 04-07-2011 |
20110157564 | LIGHT SOURCE DEVICE AND PROJECTION DISPLAY APPARATUS INCLUDING THE SAME - A light source device ( | 06-30-2011 |
20110208910 | Storage Control Device for Storage System Provided with Storage Device Coupled to Switch Network - A plurality of storage devices are coupled with at least two switch of a switch network that is configured by a plurality of switches that transfer a packet that complies with an IP (Internet Protocol). Moreover, a storage control device is coupled with the switch network. The storage control device builds an LU (Logical Unit) that is utilized by a host device based on at least two storage devices that are coupled with different switches. | 08-25-2011 |
20120131180 | SERVER SYSTEM AND METHOD FOR MANAGING THE SAME - Provided is a technique for adequately allocating hardware resources of physical hardware to virtual hardware that operates on the physical hardware, and achieving a server integration effect in accordance with the performance of the physical hardware. According to the present invention, before resources are added to the virtual hardware, the residual amount of the resources in the entire physical hardware and resources that will run short in the virtual hardware are predicted, so that a server configuration is changed in accordance with the prediction result, and resources that are actually running short in the virtual hardware are supplemented. | 05-24-2012 |
20120260017 | COMPUTER, COMPUTER SYSTEM, AND DATA COMMUNICATION METHOD - A computer includes first and second processors, first and second I/O devices, a shared memory, and an interrupt controller. The first processor issues a control command for causing the first I/O device to read target data from the first apparatus and store the target data in the shared memory. The first I/O device reads the target data from the first apparatus and, transfers the target data to the shared memory, and generates an I/O complete interrupt. The interrupt controller delivers the generated I/O complete interrupt to the second processor. When the second processor receives the I/O complete interrupt, the second processor issues a control command for causing the second I/O device to read the target data from the shared memory and send the target data to the second apparatus. The second I/O device reads the target data from the shared memory and sends the target data to the second apparatus. | 10-11-2012 |
20130046911 | STORAGE CONTROL APPARATUS - An aspect of the invention is a storage control apparatus, comprising a plurality of processors, a memory, an I/O device coupled to a storage device, a virtualization module that allocates a first processor to a first guest and a second processor to a second guest from among the plurality of processors, and an interrupt control module that receives an interrupt from the I/O device and transmits the interrupt to any one of the plurality of processors, wherein the virtualization module comprises, a state detection module that detects at least one of a state of the first guest and a state of the first processor, and an interrupt delivery destination control module that switches the interrupt with respect to the first processor to the second processor when at least one of the state of the first guest and the state of the first processor becomes a predetermined state. | 02-21-2013 |
20140149985 | CONTROL METHOD FOR I/O DEVICE AND VIRTUAL COMPUTER SYSTEM - A control method for an I/O device, the I/O device being shared by a hypervisor and a first guest OS, the hypervisor comprising a physical driver for using a physical function, the first guest OS comprising a virtual driver for using a virtual function, the control method comprising: a first step of acquiring, by the hypervisor, a state of the I/O device via the physical driver; a second step of monitoring, by the first guest OS, the hypervisor, thereby determining whether the hypervisor has been brought into a predetermined state or not; a third step of activating, by the first guest OS, a sub physical driver for operating the I/O device when the first guest OS determines that the hypervisor has been brought into the predetermined state; and a fourth step of carrying out, by the first guest OS, transmission/reception via a queue set in advance on the memory. | 05-29-2014 |
20150378892 | COMPUTER SYSTEM AND MEMORY ALLOCATION ADJUSTMENT METHOD FOR COMPUTER SYSTEM - In a computer system in which a virtualization control unit controls a plurality of virtual machines, if memory is collected regardless of a memory usage status of the virtual machine, cache miss increases and an IO performance of overall system deteriorates. In order to solve this problem, a usage status of a cache region within a memory which is utilized by each OS that the plurality of the virtual machines has, and based on a monitoring result, the virtualization control unit decides an allocation region of the memory as a collection target among the allocation region of the memory already allocated to each OS, and collects the allocation region of the memory as the collection target from the OS as a current allocation destination. | 12-31-2015 |