Faculty Profiles - YAMAUCHI Toshihiro

MISC - YAMAUCHI Toshihiro

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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

Proposal of a Method to Cut Redundant Security Policy of SELinux

YAMAGUCHI TAKUTO, NAKAMURA YUICHI, TABATA TOSHIHIRO

IPSJ SIG Notes 2008 ( 21(DPS-134 CSEC-40) ) 37 - 42 2008

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

In installing SELinux, in many cases, general security policy is adapted. This has possibility to authorize excessive rights. In addition, if such rights are permitted from a: denied log file, it is difficult for SELinux to detect them. To solve this problem, we propose a method to detect automatically such rights and to cut redundant security policy of SELinux. Our method collects used policies and gains difference between enforcing policies and those of them. In this paper, we clarify problems of security policy of SELinux and take measures against them. We also show the design of this system.

Application of the Diffusion Tracing Function of Classified Information to Socket Communication

植村晋一郎, 田端利宏, 谷口秀夫, 横山和俊, 箱守聰

情報処理学会シンポジウムシリーズ(CD-ROM) 2008 ( 1 ) 2008

Evaluation for Guarantee of Service Processing by Regulating Processor Use in Library

境講一, 田端利宏, 谷口秀夫, 箱守聰

情報処理学会シンポジウム論文集 2008 ( 8 ) 2008

Analysis of Malware Activities Based on Download Hosts

石井宏樹, 佐藤和哉, 田端利宏

情報処理学会シンポジウム論文集 2008 ( 8 ) 2008

B-013 Implementation and Evaluation of Analyzer of Visualization Information for Understanding Operating System Behaviors in Tender

Kawae Junpei, Tabata Toshihiro, Taniguchi Hideo

6 ( 1 ) 105 - 106 2007.8

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