3
性能測定・分析ツール「mevalet」 川村 冠東・鈴木 和明・堀川 隆 山下 敏明・酒木 大也 要 旨 近年の組込みソフトウェア開発は大規模化・複雑化が顕著であり、短納期化、開発効率化は経営的な課題と なっています。ARM社製CPU上で稼働するLinuxに対応した性能測定・分析ツールmevaletを開発し、かつ、 ネットワークを用いたデータ転送機能の代わりにminiSDカードを用いてデータを保存する機能を追加しました。 本ツールにより1ヵ月かかっても解決できなかった性能問題を数日で解決するなど大幅な開発効率化を実現し ました。社内の組込みソフトウェア開発の具体的活用事例を交えて本ツールを紹介します。 キーワード ●性能 ●性能測定 ●分析 ●組込み ●開発環境 1. はじめに 携帯電話や車載機器、家電製品などに代表される組込み機 器は、ネットワーク化、高機能化、ユーザニーズの多様化、 製品ライフサイクルの短縮化、製品の低価格化が急速に進行 しています。このような組込み機器のトレンド変化に伴い、 組込み機器に搭載される組込みソフトウェアは、大規模化、 複雑化、短納期化が求められており、開発期間の短縮と開発 費の削減は経営的な課題となっています。さらに、PL法など 関連法規遵守の必要性、および利用者の安全性に対する意識 の高まりによる信頼性の確保のみならず、使い勝手、処理の 高速化などを含めた高品質なソフトウェアが求められていま す。このような課題を解決するためには、分散開発、並行開 発など開発現場の開発プロセスを十分理解し、ソフトウェア 開発の生産性を向上することが必要です。 2. 性能問題防止のためのアプローチ 性能問題を未然に防止するためには、上流工程から性能を 作り込むソフトウェア開発プロセスが必要になります。その ための技術体系として 図1 に示すパフォーマンス・エンジニ アリング・フレームワーク(PEF)を開発しました。PEFで はNEC独自技術で開発した性能測定・分析ツールである mevaletを中核として、性能予測理論,テンプレート類などか ら構成されています。設計フェーズにおいては、既存のソフ トウェア製品あるいは過去のソフトウェア資産を活用して、 ソフトウェアのメソッドレベルの性能要件および挙動確認を 行い性能の事前検証を行うことが可能です。評価フェーズで 図1 パフォーマンス・エンジニアリング・フレームワーク は、実際のソフトウェアを稼働させmevaletを用いて測定する ことで、実装の正確さの検証、および上流工程で検証した性 能要件が満足されていることを確認するとともに、ボトル ネックの早期発見および性能改善策の評価と有効性確認を行 うことが可能です。このように、上流工程の性能要件を設 計・開発の節目節目で確認していくことにより、性能を作り 込むことが可能となります。 3. mevaletの概要と組込みシステムへの適用と効果 3.1 mevaletの概要 図2 にmevaletのアーキテクチャを示します。測定対象とな る組込みシステムのOS内部にフックポイントを設けることに より、特定の製品や言語に依存せず、またアプリケーション の改造もなく、数十nS~μS単位かつ数%の低オーバーヘッド ですべてのアプリケーションの性能測定、および挙動解析が 可能です。mevaletで採取可能なイベントは、カーネルモード 44 組込みソフトウェア開発環境ソリューション

View Christopher Cross’ full profile. It's free! · 2019. 3. 26. · View Christopher Cross’ full profile. It's free! Your colleagues, classmates, and 500 million other professionals

  • Upload
    others

  • View
    2

  • Download
    0

Embed Size (px)

Citation preview

Page 1: View Christopher Cross’ full profile. It's free! · 2019. 3. 26. · View Christopher Cross’ full profile. It's free! Your colleagues, classmates, and 500 million other professionals

View Christopher Cross’ fullprofile. It's free!Your colleagues, classmates, and 500 million other professionals are on LinkedIn.

View Christopher’s Full Profile

View Christopher’s Full Profile

Christopher Cross’ Posts & Activity

Summary

Christopher T. Cross is chairman of Cross & Joftus, an educational consulting firm, where hecontributes his considerable strategic planning, policy analysis, and development skills. Cross alsoserves as a consultant to the Broad Foundation and is a distinguished senior fellow with theEducation Commission of the States. Previously, he was a senior fellow with the Center forEducation Policy. During his 32 years in Washington, D.C., he served in both the executive andlegislative branches, as an assistant secretary in the U.S. Department of Education, the Republicanstaff director of the House Committee on Education and Labor, and a deputy assistant secretary inthe former Department of Health, Education and Welfare.

In 2014, Cross published the second edition of his critically acclaimed best seller, PoliticalEducation: Setting the Course for State and Federal Education Policy, with new chapters andimportant new insights into future education policy. Cross draws on his own experience inWashington, along with research and interviews, to present a highly readable history of federaleducation policy from WWII to the Obama administration. The book highlights the key players andevents who helped shape federal policy and demonstrates how federal policy has been a constantinfluence on what states and local districts do.

Experience

People Also Viewed

Paul HoustonPresident at Center for EmpoweredLeadership

Edynn Sato, Ph.D.CEO and Chief Research Scientist atSato Education Consulting LLC

Marty Blank

Dominique HohmanSenior Interior Designer at Freelance

Joan HermanSenior Research Scientist atCRESST National Center forResearch on Evaluation, Standards,and Student TestingGerald Lieberman, Ph.D.Engaging educators and schoolsystems in Environment-BasedEducation to improve teaching andlearning by using the environment asa contextStephanie Wood-Garnett, Ed.D.ISA is transforming the pathways tocollege and careers for underservedhigh school students in America.

Larry E. SuterVisiting Scholar at University ofMichigan

Robert FlodenDean at College of Education atMichigan State University

George DeBoerDeputy Director Project 2061 atAAAS

Public profile badge

Include this LinkedIn profile on other websites

Christopher CrossChairman at FourPointEducation Partners

FourPoint Education Partners

California State University-LosAngeles

View profile

View profile badges

Find a different Christopher Cross

First Name Last Name

Example: Christopher Cross

Christopher CrossChairman at FourPoint Education PartnersDanville, CA Education Management

Current FourPoint Education Partners, Cross & Joftus,LLC

Previous Council for Basic Education, Maryland StateBoard of Education, U.S. Department ofEducation

Education California State University-Los AngelesWebsites Company Website

500+connections

See all 12 posts

August 24, 2016Donald Trumps campaign recentlyannounced that it would focus on educationduring the entire week of August 29th. Ingeneral, most of us might think that attentiongiven to education by a...

Education and National...

See all activity

Christopher Cross shared

There are many ways thatissues and problems ineducation...

If Jane Smith in Arkansas invented a methodto ensure the success of rural Englishlanguage...

Christopher Cross shared

From my work in theeducation field over the past40+ years...

See more

Sign in Join now

Page 2: View Christopher Cross’ full profile. It's free! · 2019. 3. 26. · View Christopher Cross’ full profile. It's free! Your colleagues, classmates, and 500 million other professionals

ChairmanFourPoint Education PartnersMarch 2004 – Present • 15 years 1 monthDenville, California

Chairman

2004 – Present • 15 years

President & CEOCouncil for Basic EducationSeptember 1993 – December 2001 • 8 years 4 months

PresidentMaryland State Board of Education1994 – 1997 • 3 years

Assistant Secretary for Educational Research and Improvement

1989 – 1991 • 2 years

Republican Staff Director and Senior Education Consultant

1972 – 1978 • 6 yearsCommittee on Education and Labor

Education

Master of Arts (M.A.), Government1965 – 1970

Bachelor of Arts (B.A.), Political Science1958 – 1962

Activities and Societies: ODK, PSA, Wm. Penn, QC Editor

Skills & Endorsements

Join LinkedIn to see Christopher’s skills,endorsements, and full profile Join now

Groups

Christopher CrossOrange County, California Area

Christopher CrossVice President and GM, HeadhuntingServices at Movement Search &DeliveryGreater Detroit AreaChristopher CrossOne day, or day one. You decide.Lexington, Kentucky Area

Christopher A CrossProduction|Logistics|SupplyChain|ManagementOrange County, California Area

Christopher. CrossTechnology Director - ApplicationTechnology Group at SolvayGreater New York City Area

More professionals named Christopher Cross

Learn new skills with online courses

Bracketology Club: UsingMarch Madness to LearnData ScienceViewers: 24135

Project-Based Learning:STEM to STEAMViewers: 12347

Figuring Out Your NextMoveViewers: 50585

View all online courses-

Cross & Joftus, LLC

U.S. Department of Education

U.S. House of Representatives

California State University-Los Angeles

Whittier College

{

{

{

Page 3: View Christopher Cross’ full profile. It's free! · 2019. 3. 26. · View Christopher Cross’ full profile. It's free! Your colleagues, classmates, and 500 million other professionals

View Christopher Cross’ full profile to...• See who you know in common• Get introduced• Contact Christopher Cross directly

View Christopher’s Full Profile

Not the Christopher you’re looking for? View more

LinkedIn member directory: a b c d e f g h i j k l m n o p q r s t u v w x y z more Browse members by country

© 2019 User Agreement Privacy Policy Community Guidelines Cookie Policy Copyright Policy Unsubscribe

Whittier College Alu…