Faculty Profiles - YAMAUCHI Toshihiro

MISC - YAMAUCHI Toshihiro

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D-6-20 Proposal of Function for Regulating I/O Performance based on I/O Slot

Nagao Takashi, Tabata Toshihiro, Taniguchi Hideo

Proceedings of the IEICE General Conference 2009 ( 1 ) 70 - 70 2009.3

D-6-19 プログラム実行速度調整法におけるフィードバックを利用した高精度な制御法の提案(D-6. コンピュータシステムC(ソフトウェア),一般セッション)

境講一, 田端利宏, 谷口秀夫, 箱守聰

電子情報通信学会総合大会講演論文集 2009 ( 1 ) 69 - 69 2009.3

Design of Network-Transparent InterProcess Communication on Tender

SAEKI Kenji, TABATA Toshihiro, TANIGUCHI Hideo

IPSJ SIG Notes 138 ( 20 ) 55 - 60 2009.2

Language：Japanese Publisher：Information Processing Society of Japan (IPSJ)

The Tender operating system has original InterProcess Communications. We realize Network-Transparent InterProcess Communication which can use in distributed system. In this paper, We describe Network-Transparent original InterProcess Communication with "container", "container box" and "event" on Tender. Furthermore, We describe method of send and receive container, and shared container which used distributed shared memory.

A Mechanism of Regulating Execution Speed that Considered the Run Mode of Program

SAKAI Koichi, TABATA Toshihiro, TANIGUCHI Hideo, HAKOMORI Satoshi

IPSJ SIG Notes 110 ( 6(OS-110) ) 99 - 106 2009.1

Language：Japanese Publisher：Information Processing Society of Japan (IPSJ)

If execution speed of software is regulated without concerning by performance of the computer hardware, Convenience of the service better. In addition, regulating execution speed inhibits influence of DoS attack, and help restoration from DoS attack. On the other hand, program runs in user mode and supervisor mode. Therefore, considering run mode of program enables high accuracy regulating execution speed. We propose a mechanism of regulating execution speed in consideration of the run mode of program. Specifically, our method can regulate the execution speed of program in user mode, supervisor mode, and both modes. This paper describes a method of stopping process and a method of setting regulated performance. Furthermore, we implement and evaluate the proposed mechanism in library to clarify the characteristic and the effectiveness of it.

Evaluation for a Mechanism of Regulating Execution Speed that Considered the Run Mode of Program

境講一, 田端利宏, 谷口秀夫, 箱守聰

情報処理学会研究報告(CD-ROM) 2009 ( 1 ) 2009

統合仮想化システムモニタを用いたマルウェアのプロファイリング

安藤類央, 高橋一志, 田端利宏, 須崎有康

情報処理学会シンポジウム論文集 2009 ( 11 ) 2009

Evauluation of I/O Buffer Cache Mechanism Based on the Frequency of File Usage

KATAKAMI TATSUYA, TABATA TOSHIHIRO, TANIGUCHI HIDEO

情報処理学会研究報告 27 ( 119(EVA-27) ) 13 - 18 2008.11

Language：Japanese Publisher：Information Processing Society of Japan (IPSJ)

We proposed an I/O buffer cache mechanism based on the frequency of file usage. This paper describes an evaluation of the proposed mechanism and effectiveness of the proposed mechanism from evaluation results. In particular, we evaluated two examples to decrease a cache hit rate by LRU algorithm. The results show that the proposed mechanism improves the performance as compared to the LRU algorithm. And we evaluated the proposed mechanism by kernel make processing, and the proposed mechanism improves the processing time by 22.4s (7.1%) as compared to the LRU algorithm.

High-speed page data transfer mechanism on Tender

KADO Naofumi, TABATA Toshihiro, TANIGUCHI Hideo

IEICE technical report 108 ( 273 ) 1 - 6 2008.10

Language：Japanese Publisher：The Institute of Electronics, Information and Communication Engineers

Distributed shared memory on Tender operating system transfers data per 1 page unit. In data transferring processing, the data copy between user space and kernel space is the high overhead. Thus performance improvement in data transfer processing is expected by reducing data copy. In this paper, we propose a mechanism of data transferring which exchanges "physical memory" resources between two "virtual region" resources.

B-032 A Method of Executing Linux FD Driver as a Process for AnT Operating System

Shimazaki Yutaka, Taniguchi Hideo, Tabata Toshihiro, Nomura Yoshinari

7 ( 1 ) 179 - 180 2008.8

B-031 Design of Sophisticated Periodic Execution for AnT Operating System

Furukawa Yuuki, Taniguchi Hideo, Tabata Toshihiro

7 ( 1 ) 177 - 178 2008.8

Control of Processor Usage by Regulating Intervals between System Calls

SAKAI Koichi, TABATA Toshihiro, TANIGUCHI Hideo, HAKOMORI Satoshi

IPSJ SIG Notes 109 ( 77(OS-109) ) 101 - 108 2008.8

Language：Japanese Publisher：Information Processing Society of Japan (IPSJ)

Improvement of hardware performance reduces the processing time of software and various processing can be executed on computers. On the other hand, processing performance of software depends on hardware performance significantly. Therefore, it is necessary to establish mechanism that regulating a program execution speed within hardware performance. This paper proposes a mechanism of library which regulates program execution speed by controlling a time of processor usage. Specifically, this paper describes the basic method of a library which controls a time of processor usage based on intervals between system-calls. This paper describes a method of stopping process and a method of assigning processor performance. Furthermore, we implement and evaluate the proposed mechanism to clarify the characteristic and the effectiveness of it.

I/O Device Management of Persistent Mechanism on Tender

YAMAMOTO YUTA, TABATA TOSHIHIRO, TANIGUCHI HIDEO

IPSJ SIG Notes 109 ( 77(OS-109) ) 61 - 68 2008.8

Language：Japanese Publisher：Information Processing Society of Japan (IPSJ)

Data on main memory is no longer available when a computer is turned off, because volatile memory is used for main memory. Therefore, if a computer shutdowns unexpectedly, a computer cannot continue processing before the shutdown. Thus, we propose persistent mechanism for computer processing using "plate" function. Plate manages a persistent data on virtual memory space. However, this persistent mechanism ignores status of I/O devices. If plate persists data during I/O, a computer cannot continue processing after plate restore data. In this paper, we explain I/O device management method on persistent mechanism.

I/O Buffer Cache Mechanism Based on Use Frequency of File

KATAKAMI TATSUYA, TABATA TOSHIHIRO, TANIGUCHI HIDEO, WATANABE HIROSHI, NOMURA YOSHINARI

IPSJ SIG Notes 108 ( 35(OS-108) ) 115 - 122 2008.4

Language：Japanese Publisher：Information Processing Society of Japan (IPSJ)

Most operating systems manage a buffer cache for I/O processing by a block unit. On the other hand, application programs handle a data from a viewpoint of files. I/O buffer cache mechanism considered this difference is effective to execute I/O processing efficiently because I/O processing is slower than CPU processing. In this paper, we describe I/O buffer cache mechanism that decides blocks protected based on use frequency of file of application programs.

A Method for Control of Driver Program Invocation based on Device Operation History on AnT Operating System

TAKIGUCHI Shinichi, NOMURA Yoshinari, TABATA Toshihiro, TANIGUCHI Hideo

情報処理学会研究報告 134 ( 32 ) 43 - 48 2008.3

Language：Japanese Publisher：Information Processing Society of Japan (IPSJ)

Recently, operating systems have become increasingly multi-functional by the providing of various devices. Its functions are provided as driver programs. Even though average users do not use all functions, they do not customize and shrink their operating systems because of its job difficulty. Accordingly, they usually use wasteful and fat operating systems: much memory, slow down bootup time. In this paper, we propose an effective method for controlling invocation timing of device driver programs. As a strategy for the control, we use operation history on device drivers. And we present this design on AnT operating system.

A Method for Control of Driver Program Invocation based on Device Operation History on AnT Operation System

TAKIGUCHI Shinichi, NOMURA Yoshinari, TABATA Toshihiro, TANIGUCHI Hideo

IEICE technical report 107 ( 559 ) 43 - 48 2008.3

Language：Japanese Publisher：The Institute of Electronics, Information and Communication Engineers

A library program for controlling the execution speed of a program by regulating amount of processor use

SAKAI Koichi, TABATA Toshihiro, HOKOMORI Satoshi, TANIGUCHI Hideo

70 ( 0 ) 29 - 30 2008.3

Proposal of Buffer Cache Management Based on Use Frequency of File

KATAKAMI Tatsuya, TABATA Toshihiro, TANIGUCHI Hideo

70 ( 0 ) 35 - 36 2008.3

Improvement Method of the Detection Accuracy of the Information Leakage in Diffusion Tracing Function of Classified Information

OHASHI Kei, TABATA Toshihiro, TANIGUCHI Hideo, YOKOYAMA Kazutoshi, HAKOMORI Satoshi

IPSJ SIG Notes 134 ( 21 ) 97 - 102 2008.3

Language：Japanese Publisher：Information Processing Society of Japan (IPSJ)

Recently, a leak of classified information has become a serious problem. To prevent the leak, various methods are proposed. We proposed the method to trace the classified information diffusion and to detect an information leak of classified information. As a matter, this method identify non classified file as classified file. In this paper, we propose a method to improve accuracy at the time of the information leakage detection. Specifically, we prevent classified information diffusion to config file and history file. In addition, our proposal function enable user easily to read and edit classified file table. We implement the proposal method on the Linux kernel and evaluate it and show that accuracy of the information leakage detection is improved.

Design of a Function to Store and Restore Process State including InterProcess Communication on Tender

NANBA Hiroki, TABATA Toshihiro, TANIGUCHI Hideo

IPSJ SIG Notes 107 ( 9(OS-107) ) 87 - 94 2008.1

Language：Japanese Publisher：Information Processing Society of Japan (IPSJ)

System failure makes process restart from initial state. Function to store and restore process state are effective mechanism that prevents a process from restarting from the initial state when a system failure occurs. In this paper, we describe a function to store and restore processes state including InterProcess Communication(IPC). In addition, we report the implementation and evaluation results on Tender operating system.

D-6-21 Design of Ethernet Communication Using Resource "Input and Output" on Tender

Kado Naofumi, Tabata Toshihiro, Taniguchi Hideo

Proceedings of the IEICE General Conference 2008 94 - 94 2008

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