Abstract: An interrupt handling method and a system are provided. An exemplary embodiment of an interrupt handling method in a virtualized environment operable on a computer having one or more CPU cores, includes disabling a virtual machine exit triggers by an interrupt that destined to a virtual machine (VM), via a hypervisor of the virtualized environment. The exemplary method further includes delivering directly one or more interrupts from an I/O virtualization (IOV) device and a virtual device that destined to the VM, while the destined VM is running on one of the one or more CPU cores, otherwise delivering the one or more interrupts to the hypervisor to deliver corresponding one or more virtual interrupts to the destined VM.

Abstract: A method and a computer system for memory management on a virtual machine system are provided. The memory management method includes the following steps. A least recently used (LRU) list is maintained by at least one processor according to a last access time, wherein the LRU list includes a plurality of memory pages. A first portion of the memory pages are stored in a virtual memory, a second portion of the memory pages are stored in a zram driver, and a third portion of the memory pages are stored in at least one swap disk. A space in the zram driver is set by the at least one processor. The space in the zram driver is adjusted by the processor according to a plurality of access probabilities of the memory pages in the zram driver, an overhead of a pseudo page fault, and an overhead of a true page fault.

Abstract: A method of converting a routing mode of a network is provided, wherein a plurality of first routes connected a central controller to a plurality of nodes are established in the network through a spanning tree protocol and a plurality of second routes between the nodes in the network through the spanning tree protocol. The method includes enabling a firewall of each of the nodes to block the second routes; disabling a spanning tree protocol function of each of the nodes; populating a forwarding table of each of the nodes with a plurality of predetermined routing paths; and flushing the firewall of each of the nodes, wherein a plurality of third routes between the central controller and the plurality of nodes are established according to the predetermined routing paths without the spanning tree protocol, after the firewall of each of the nodes is flushed.

Abstract: A power management method for electro-chemical batteries in low capacity state is provided, including: obtaining battery information based on device hardware, to know in advance the maximum allowable current and maximum allowable power when the battery power is low; by detecting the changes in the voltage versus current, updating BCC curve; using BCC curve as power budget to control the ON/OFF of device function thread; and determining whether the minimum battery capacity and the control restriction are reached, and when the minimum battery capacity and the control restriction are reached, turn off the battery through normal shutdown process; otherwise, return to the step of obtaining battery information.

Abstract: A document processing method and system are provided. A client divides at least one document into a plurality of document pages, and individually encrypts the document pages by a first key to obtain a plurality of encrypted pages. The client removes a part of words from the document pages to obtain a plurality of significant words, and individually encrypts the significant words by a second key different to the first key to obtain a plurality of encrypted significant words. The client records the encrypted significant words and a plurality of first index information in a significant word set (SWS), where the first index information indicates a page in the encrypted pages where the encrypted significant word comes from. Then, the client transmits the encrypted pages and the SWS to a remote server for storage.

Abstract: According to one exemplary embodiment, a method for analyzing root causes applies an application-level dependency discovery and anomaly detection to find application-level dependencies in one or more virtual machines (VMs), and generate an application-level topology with anomaly, and then transfers the application-level topology with anomaly to a VM-level dependency, and transfers the VM-level dependency to a physical machine level (PM-level) dependency via a physical and virtual resource mapping, and eventually generates a group of event sets. A prioritized event list is generated by prioritizing the group of event sets.

Abstract: The present disclosure proposes a disk logging method configured for an electronic device comprising a temporary non-volatile storage medium to log data from a volatile memory to said first storage medium, and the method includes the elements of aggregating data from applications of the electronic device in a queue, transferring the aggregated data to a per device queue targeted toward a native queue of the storage medium, writing the data stored in the native queue of the storage medium into a disk platter of the storage medium, and transmitting an interrupt in response to the completion of the writing of the data to the disk platter, wherein the first batch size is dynamically adjusted such that the step of writing the data to the platter takes more time than the step of transferring the data from the per device queue to the native queue of the storage medium.

Abstract: A memory storage system includes multiple flash memory storage devices, multiple transmission interfaces and a central control device. The central control device has a cache and respectively coupled to the flash memory storage devices through the transmission interfaces. The central control device is for maintaining a block map table (BMT) to record a mapping relationship between multiple logical blocks and the physical blocks of the flash memory storage devices and the BMT is temporarily stored in the cache. In addition, the central control device uses the communication commands to access the physical blocks of the flash memory storage devices, in which the communication commands are transmitted to multiple controllers in the flash memory storage devices through the transmission interfaces and the controllers access the physical blocks according to communication commands. In this way, the system can effectively manage multiple flash memory storage devices.

Abstract: A method and a computer system for memory management on a virtual machine system are provided. The memory management method includes the following steps. First, a working set size of each of a plurality of virtual machines on the virtual machine system is obtained by at least one processor, wherein the working set size is an amount of memory required to run applications on each of the virtual machines. Then, an amount of storage memory is allocated to each of the virtual machines by the at least one processor according to the working set size of each of the virtual machines and at least one swapin or refault event, wherein the storage memory is a part of memory available from the computer system.

Abstract: A memory management method for a virtual machine system is provided. First, a first threshold value is set by a processor. A balloon target is then set to an allocated virtual memory size and decremented by a first decrement value stepwise by the processor according to a swapin/refault detecting result in a first adjustment state. The swapin/refault detecting result is generated by detecting at least one swapin or refault events by the processor. The balloon target stops being decremented by the processor according to the swapin/refault detecting result in a cool-down state. The balloon target is decremented by a second decrement value stepwise by the processor in a second adjustment state which is after the cool-down state. The second decrement value is less than the first decrement value, and the balloon target is not less than the first threshold value.

Abstract: Techniques for virtual environment-based web client management are disclosed. In one particular exemplary embodiment, the techniques may be realized as a method for virtual environment-based web client management comprising monitoring web requests of a first web client of a first virtual machine, detecting a web request from the first web client matching one or more indicators, the one or more indicators corresponding to content to be handled on a second virtual machine, capturing a state of the first web client on the first virtual machine, transferring captured state information and web request information to a second web client on the second virtual machine, transitioning a user interface from the first web client to the second web client automatically using at least one of a keyboard controller driver and a hypervisor API, the second web client handling the web request from the first web client.

Abstract: According to one exemplary embodiment, a method for storing and rebuilding data computes a corresponding parity after receiving an Input/Output command, and based on the parity, determines whether a final stripe corresponding to the Input/Output command is a full stripe. When the final stripe is a full stripe, a plurality of data and a parity corresponding to the Input/Output command are stored into a main hyper erase unit (HEU) in a disk storage system. When the final stripe is not a full stripe, a final parity is re-computed and written into at least two parity pages of a buffering HEU.

Abstract: A method for sharing memories of virtual machines is provided. The method is applied for a computer system configured to execute at least one virtual machine. The method includes the following steps. A memory map corresponding to the virtual machines is obtained, wherein usage states of memory pages of the virtual machine are stored in the corresponding memory map. Unused memory pages of the virtual machines are marked as free pages according to the corresponding memory map. The free pages of the virtual machines are shared. Therefore, the unused memory pages in the virtual machine can be shared. A computer system using the foregoing method is also provided.

Abstract: A user input method includes the following steps. A virtual keyboard layout and a control region are displayed. The virtual keyboard layout includes a plurality of key subgroups each mapped to a respective one of a plurality of regions of the control region. Locations of an object from at least one captured image are extracted to identify a location of a feature point of the object. A target region in which the feature point is located is determined. Keys mapped to the target region are determined. Movements of the object are translated as input data to the user interface system.

Abstract: A method for accessing files on a storage system is provided. A hash memory table including a plurality of hash buckets respectively corresponding to a plurality of index hash codes is built. Each of the hash buckets has a pointer pointing towards at least one entry. Each of the entries has a physical address field and a hash code field. The physical address fields respectively record physical addresses storing the files, and the hash code fields respectively record verification hash codes corresponding to the files. The index hash codes are generated by inputting keys of the files to an index hash function and the verification hash codes are generated by inputting keys of the files to a verification hash function. Then, the hash memory table is loaded into the buffer with a bucket-based replacement policy so that the files are able to be accessed according to the hash memory table.

Abstract: A system and method for backing up files to a single-instance storage system are disclosed. The files may be split into segments, and the file data may be stored in the single-instance storage system as individual segments. The single-instance storage system uses the concept of a file region which covers multiple segments of the file. If a region of a file is unchanged from one backup to the next, the system may use a region object to refer to the unchanged region. This avoids the need to update the reference information for each of the segments within the region, thus increasing the efficiency of backing up the new version of the file.

Abstract: A method for object tracking is provided, which is suitable for retrieving and analyzing distributed surveillance data. The method for object tracking includes the following steps: determining a set of surveillance data corresponding to at least one initial object spot in a set of initial object spots according to a location and a time of the initial object spot; retrieving segments of surveillance data in the set of surveillance data; finding at least one discovered object spot matching a target object qualification in the set of surveillance data and adding the discovered object spot into a set of discovered object spots; setting the set of initial object spots to be the set of discovered object spots and repeating the aforementioned steps when the set of discovered object spots is not empty; and outputting the discovered object spot when the set of discovered object spots is empty.

Abstract: In a method for SR-IOV Virtual Functions Sharing on Multi-Hosts, implemented in a management system, one or more fake devices are simulated in one or more hosts with each fake device corresponding to one of a plurality of SR-IOV virtual functions. Each of one or more configuration spaces is redirected from each SR-IOV virtual function to each fake device, respectively. Each of configuration space requests is redirected from a corresponding fake device to a corresponding SR-IOV virtual function when the configuration space request is received. And each of memory access operations is redirected from the corresponding SR-IOV virtual function to a mapped memory on a corresponding host with the corresponding fake device, and each of interrupts generated by one or more SR-IOV virtual machines is redirected to the corresponding fake device.

Abstract: A technique generates application-level dependencies in one or more virtual machines (VMs). An intercepting module in a VM monitor intercepts a guest operation system (OS) at TCP send and close related operations. An introspecting module in the VM monitor performs VM introspection for TCP connection and thread information by checking running thread and processing socket kernel objects. It generates an application trajectory and exports application dependencies from the application trajectory for a selected application.

Abstract: Disclosed is a method for managing logical block write requests for a flash drive. The method includes receiving a logical block write request from a file system; assigning a category to the logical block; and generating at least three writes from the logical block write request, a first write writes the logical block to an Erasure Unit (EU) according to the category assigned to each logical block, a second write inserts a Block Mapping Table (BMT) update entry to a BMT update log, and a third write commits the BMT update entry to an on-disk BMT, wherein the first and second writes are performed synchronously and the third write is performed asynchronously and in a batched fashion.