Faculty Profiles - YAMAUCHI Toshihiro

MISC - YAMAUCHI Toshihiro

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The relation between program description and high performance mechanism of processor

57 - 64 2012.1

Preface

Goichiro Hanaoka, Toshihiro Yamauchi

Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) 7631 LNCS 2012

Automatic Method of Partitioning I/O Buffer Based on Cache Hit Ratio

( 2011 ) 62 - 72 2011.11

Proposal of Function to Visualize Diffusion Path of Classified Information

2011 ( 3 ) 367 - 372 2011.10

A profiling method of malware's behavior using integratedvirtualized system monitor

2009 ( 2009 ) 1 - 6 2011.10

Implementation and Evaluation of I/O Resource on Tender Operating System

2011 ( 19 ) 1 - 8 2011.7

Evaluation of Inter Server Program Communication for AnT operating system on SH-4

2011 ( 12 ) 1 - 8 2011.7

Interprocess communication function using the physical memory exchange function on Tender Operating System

2011 ( 13 ) 1 - 7 2011.7

I/O Buffer Partitioning Method Based on Cache Hit Ratio

2011 ( 18 ) 1 - 9 2011.7

Implementation and Evaluation of Virtual Machine Based Kernel Log Collector

2011 ( 28 ) 1 - 8 2011.7

Design and Evaluation of a Method to Reduce Redundant Security Policy of SELinux

YAGI SHINYA, NAKAMURA YUICHI, YAMAUCHI TOSHIHIRO

IEICE technical report 111 ( 30 ) 71 - 76 2011.5

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

In many cases, general security policy is used because of the difficulty of creating security policy. However, this security policy is possible to allow excessive rights in system. In addition, it is difficult to use this security policy in embeded systems because of the memory footprint. To deal with these problems, we propose a method system automatically detects redundant security policies by using log SELinux outputs and deletes them. The proposed system also suggests system administrator and improves security of the system and reduces the memory footprint. This paper shows the problems of security policy and dealing with them. This paper also shows design and evaluation.

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Design and Evaluation of a Method to Reduce Redundant Security Policy of SELinux

2011 ( 13 ) 1 - 6 2011.5

周期実行制御における周期超過防止法の周期処理分割に関する評価

古川友樹, 山内利宏, 谷口秀夫

第73回全国大会講演論文集 2011 ( 1 ) 39 - 40 2011.3

Language：Japanese

ロボットのモータ制御やセンサ制御における処理は周期的に実行される．周期的に実行される処理は次の周期までに処理を終了する必要があり，次の周期までに処理が終了しない場合，予定されていた処理の実行が行われず，問題となる．一方，周期実行される処理の開始から終了までの時間は，実入出力処理時間の変動やタイマ割り込み処理の影響により一定でない．そこで，処理の実行状況を記録し，次の周期までに処理が終了できるか否か判定し，超過すると判定した場合，終了時刻までに終了できる適切な処理を起動できる方法を提案した．ここでは，提案手法の周期処理分割に関する評価について述べる．

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Proposal of I/O Resource on Tender Operating System

2010 ( 5 ) 1 - 7 2011.2

Design and Evaluation of Control Method to Deal with Deadline Miss for Periodic Scheduling

FURUKAWA Yuuki, YAMAUCHI Toshihiro, TANIGUCH Hideo

IEICE technical report 110 ( 278 ) 23 - 28 2010.11

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

The processing executed periodically must be finished before the next release time. If such a processing is not finished before a deadline, the scheduled processing is not executed in the next period. On the other hand, the execution time of the processing executed periodically from the release to the end is not constant by changing of I/O processing time and influencing the timer interrupt. Therefore, our proposed system records the execution time of the processing, judges whether the processing will be finished before the deadline and can execute the appropriate processing for the remaining time. In this paper, we describe the design and evaluation of our system.

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Evaluation of Dynamic Communication Control Server Replacement Processing for AnT

2010 ( 11 ) 99 - 104 2010.10