Fujitsu Corporation

Munenori Maeda

Toshihiro Ozawa

Yasuo Noguchi

Masahisa Tamura

Tatsuo Kumano

Ken Iizawa

Jun Kato

Kazutaka Ogihara

Kazuichi Oe

Kohta Nakashima

Yuki Matsuo

Yuji Wada

Takashi Watanabe

Tsuyoshi Takeuchi

Kazumi Abe

Ken Ilzawa

A non-transitory computer-readable recording medium stores a control program for each of control circuits in an information processing device constituted by a plurality of the control circuits and for causing a computer to execute a process including: when synchronization of power consumption between the respective control circuits is detected, computing delay time of an own control circuit such that the control circuits have the delay time different from each other; disclosing data of the power consumption at a past time point with respect to the delay time, to other control circuits as the data of the current power consumption; and performing load balancing by using the data of the power consumption disclosed to the other control circuits and the data of the power consumption disclosed by the other control circuits.

Computer-readable recording medium storing control program, information processing device, and control method

An information processing device includes: a request queue that stores a request for IO processing; a response queue that stores a response that makes notification of completion of the IO processing; an IO device that obtains the request from the request queue, executes the IO processing instructed by the obtained request, and stores the response in the response queue after the completion of the IO processing; a first processing unit that writes a request to the request queue after saving context that is information that indicates an operation state of the first processing unit; and a second processing unit that polls the response queue, detects storage of the response in the response queue, obtains the response from the response queue, and notifies the first processing unit of the completion of the IO processing.

Information processing device, control method, and computer-readable recording medium storing control program

An information processing device, includes a memory; and a processor coupled to the memory and configured to: store, in the memory, a confirmation program for performing communication confirmation of a network, transmit the confirmation program to a server in the network, collect an execution result of the communication confirmation transmitted from the server by causing the server to execute the communication confirmation, and perform correctness determination of the execution result.

Information processing device, information processing system, and network communication confirmation method

An information processing apparatus includes a memory and a processor. The memory stores a first queue being registered a newly generated task, and a second queue being registered a thread in an executable state among threads assigned to the task. The processor performs a process including: judging execution priority of a second task registered in the first queue and of a second thread registered in the second queue when execution of a first task by a first thread ends, retrieving, if it is judged that the second thread is to be executed first, the second thread from the second queue and executing a task, to which the second thread is assigned, by the second thread, and retrieving, if it is judged that the second task is to be executed first, the second task from the first queue and executing the second task by the first thread.

Information processing apparatus and storage medium storing execution control program

An apparatus includes: a first memory configured to store thread information to be used in thread execution; a second memory configured to store the thread information saved from the first memory; and a processor configured to execute allocation processing. In an example, the allocation processing includes: judging based on an instruction to generate a thread whether the first memory has an empty area to store the thread information of the thread; allocating the empty area to the thread information of the thread when the first memory has the empty area; and generating identification information in response that the thread is generated, by using a first index and discrimination information, the first index being an index for identifying the thread information stored in the first memory, the discrimination information being information for discriminating the thread information stored in the first memory from the thread information saved to the second memory.

Information processing apparatus, control method of information processing, and non-transitory computer-readable storage medium for storing program

An information processing apparatus including a communication interface to communicate with another information processing apparatus, and a processor that executes a process including issuing, by a first thread, a reception request of data from the another information processing apparatus to the communication interface, determining, by using the first thread, whether a completion notification is stored in a queue that stores data transmitted from the other information processing apparatus, causing the first thread to transit to a suspended state when the completion notification is not stored, executing a processing by using a second thread included in the plurality of threads when the first thread is in the suspended state, determining whether the completion notification is stored in the queue after the processing, and transferring the received data to the first thread and causing the first thread to return from the suspended state, upon a storing of the completion notification.

Information processing apparatus, information processing method, and non-transitory computer-readable storage medium

An information storage device includes a memory and a processor coupled to the memory. The memory is configured to store therein a plurality of data. The processor is configured to receive a write request of writing first data to the memory. The processor is configured to perform an exclusive OR operation on the first data and second data of the plurality of data to obtain first difference data. The processor is configured to encode the first difference data by a run-length encoding to obtain encoded data. The processor is configured to determine whether a first size of the encoded data is smaller than a predetermined threshold value. The processor is configured to store, upon determining that the first size is smaller than the predetermined threshold value, the encoded data in the memory in association with first position information indicating a position of the second data.

Information storage device and method for deduplication

An information processing apparatus including a memory that stores correspondence information, the correspondence information indicating a correspondence between a plurality of first identifiers and a plurality of combinations of one of a plurality of first threads and one of a plurality of second threads, respectively, and a processor coupled to the memory and the processor configured to execute a process including storing, into a queue, a completion notification corresponding to received data upon a reception of the received data, the received data including a second identifier indicating a combination of transmission source thread among the plurality of second threads and a destination thread among the plurality of first threads, retrieving the completion notification stored in the queue, specifying a third thread among the plurality of first threads based on the second identifier included in the received data and the correspondence information, and transmitting the received data to the third thread.

A storage system includes a storage device that stores divided data which represents data which is obtained by division of data in a time series; a server device that acquires a first time, searches interval-related information for an interval that overlaps an interval between the first time and a second time following the first time by a specified duration of time, the interval-related information storing information in which identifying information that identifies the divided data and information that relates to intervals which indicate start times and end times of the divided data are associated, and acquires identifying information for the divided data that corresponds to the interval for which the search was performed; and a terminal device that acquires from the storage device the divided data that corresponds to the acquired identifying information and reads out the acquired divided data in chronological order.

Storage system, recording medium for storing control program and control method for storage system

A function-calling-information collection method includes collecting, at time of execution of a function, calling information of concerned function, selecting whether or not to perform lossy compression of the collected calling information, storing, in a memory unit, the calling information compressed by a lossy compression when the lossy compression is selected, and storing, in the memory unit, the calling information without compression or compressed by a lossless compression when the lossy compression is not selected.

Function-calling-information collection method and computer-readable recording medium

A computer includes a memory that stores a program and received data; and a processor that executes an operation by executing the program stored in the memory, the operation including storing the received data into a first database having a first data structure in which reading is performed in a random access manner and writing is performed in a sequential access manner, when the received data is received from a second apparatus is as same as data stored in a first apparatus which has a failure, and copying the received data stored in the first database to a second database having a second data structure in which reading is performed in a sequential access manner and writing is performed in a random access manner.

Computer, data storage method, and information processing system

A transfer data block is selected, and a data file including the transfer data block is selected as a transfer data file. All the data blocks of the transfer data file are added to the transfer data block. When all the data files including each transfer data block is selected as a transfer data file, the transfer data block is selected as a deletion data block. When a total data amount of the deletion data block is larger than or equal to a predetermined target deletion data amount and a ratio of a total data amount of the transfer data block to the total data amount of the deletion data block is smaller than or equal to a predetermined value, the data file is transferred from a transfer source node to a transfer destination node. Accordingly, a storage can be used efficiently.

Transfer control device, non-transitory computer-readable storage medium storing program, and storage apparatus

A first information processing apparatus transmits a message storing a replica of data stored in the first information processing apparatus. The message has an unspecified destination. A first relay apparatus detects a second information processing apparatus provided in a network to which the first relay apparatus belongs. The first relay apparatus selects, as a transfer destination of the message, the second information processing apparatus or a second relay apparatus upon receiving the message. The first relay apparatus transfers the message to the selected transfer destination. The second information processing apparatus stores the replica therein upon receiving the message.

Replica deployment method and relay apparatus

A storage apparatus is provided, including a first storage unit; a load information obtaining unit that obtains load information for each of a plurality of portions defined by dividing the first storage unit; a portion identifying unit that identifies a candidate portion that is to be relocated in the first storage unit based on the load information; a determining unit that determines whether or not data in the candidate portion is allowed to be migrated to a second storage unit, the second storage unit having a performance value higher than a performance value of the first storage unit; an adder that adds the second storage unit, when the determining unit determines that the data in the candidate portion is not allowed to be migrated; and a relocation unit that migrates the data in the candidate portion from the first storage unit to the added second storage unit.

Storage pool-type storage system, method, and computer-readable storage medium for peak load storage management

A storage device being one of a plurality of storage devices storing data includes a memory and a processor coupled to the memory. The processor executes determining, when having received a new request and a new priority information during a preparation for an execution of another update processing, whether a new priority indicated by the new priority information is higher than a priority of the update processing in the preparation. The process including canceling the update processing in the preparation when having determines at the determining that the new priority is higher than the priority of the update processing in the preparation. The process includes forwarding the new request and the new priority information to another storage device when having determined at the determining that the new priority is higher than the priority of the update processing in the preparation.

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Yokohama, Japan

Munenori Maeda