Yohei Ueda


Yohei Ueda


Staff Research Scientist


IBM Research - Tokyo Tokyo, Japan


Yohei is working on enhancements of performance and security of software stacks for IBM Z. He has contributed to various open source projects related to cloud and security, and is recently contributing to the Confidential Container project, a CNCF sandbox project.



  • Tatsushi Inagaki, Yohei Ueda, Moriyoshi Ohara, Sunyanan Choochotkaew, Marcelo Amaral, Scott Trent, Tatsuhiro Chiba, Qi Zhang, "Detecting Layered Bottlenecks in Microservices," 2022 IEEE 15th International Conference on Cloud Computing (CLOUD), Barcelona, Spain, 2022, pp. 385-396
  • Nakaike, Q. Zhang, Y. Ueda, T. Inagaki and M. Ohara, "Hyperledger Fabric Performance Characterization and Optimization Using GoLevelDB Benchmark," 2020 IEEE International Conference on Blockchain and Cryptocurrency (ICBC), Toronto, ON, Canada, 2020, pp. 1-9
  • Tatsushi Inagaki, Yohei Ueda, Takuya Nakaike, Moriyoshi Ohara, "Profile-based Detection of Layered Bottlenecks", ICPE '19: Proceedings of the 2019 ACM/SPEC International Conference on Performance Engineering, April 2019, pp 197–208
  • Performance competitiveness of a statically compiled language for server-side Web applications Yohei Ueda, Moriyoshi Ohara Proceedings of 2017 IEEE International Symposium on Performance Analysis of Systems and Software (ISPASS 2017), IEEE
  • Container management as emerging workload for operating systems Tatsushi Inagaki, Yohei Ueda, Moriyoshi Ohara 2016 IEEE International Symposium on Workload Characterization, IISWC 2016, Providence, RI, USA, September 25-27, 2016, pp. 65--74
  • Distributed and fault-tolerant execution framework for transaction processing T. Suganuma, A. Koseki, K. Ishizaki, Y. Ueda, K. Mizuno, D. Silva, H. Komatsu, T. Nakatani Proceedings of the 4th Annual International Conference on Systems and Storage, pp. 2, 2011
  • Performance variations of two open-source cloud platforms Ueda, Yohei and Nakatani, Toshio Workload Characterization (IISWC), 2010 IEEE International Symposium on, pp. 1--10 Abstract
  • Parallel Programming Framework for Large Batch Transaction Processing on Scale-out Systems Kazuaki Ishizaki, Ken Mizuno, Toshio Suganuma, Daniel Silva, Akira Koseki, Hideaki Komatsu, Yohei Ueda, Toshio Nakatani Proceedings of the 3rd Annual Haifa Experimental Systems Conference, pp. 15:1--15:14, ACM, 2010
  • The data-centricity of web 2.0 workloads and its impact on server performance Ohara, Moriyoshi and Nagpurkar, Priya and Ueda, Yohei and Ishizaki, Kazuaki Performance Analysis of Systems and Software, 2009. ISPASS 2009. IEEE International Symposium on, pp. 133--142
  • 上田陽平, 小松秀昭, 中谷登志男. マルチコア・システムにおけるSAP Javaアプリケーション・サーバのスケーラビリティ性能比較. (プログラミング Vol.1 No.3). 情報処理学会論文誌 論文誌トランザクション 2008年度(2) 2009.4
  • 水野謙, 菅沼俊夫, 石崎一明, 古関聰, 上田陽平, 小松秀昭. 並列トランザクショナルアプリケーションのためのプログラミングフレームワーク. 情報処理学会論文誌:プログラミング Vol. 48 No. SIG 12(PRO 34), Aug 2007
  • 上田陽平, 山本泰宇, 関口龍郎, 米澤明憲. アセンブリ言語レベルでの異種計算機間のヒープとスタックの共有機構. 情報処理学会論 文誌. プログラ ミング Vol.42 No.SIG03 PRO10, pp. 27-39. 2001


  • 上田陽平, 稲垣達氏, 小原盛幹. IaaSクラウド環境での Confidential Computing によるセキュアなアプリケーション実行環境の構築手法. SWoPP (Summer United Workshops on Parallel, Distributed and Cooperative Processing), 2022
  • 上田陽平, 小原盛幹. サーバーサイドWebアプリケーションによる静的および動的コンパイル言語の性能比較. SWoPP (Summer United Workshops on Parallel, Distributed and Cooperative Processing), 2019
  • Yohei Ueda, Hideaki Komatsu, Toshio Nakatani. Scalability of a Java Application Server on a multi-core system with small cache memories”, The Eleventh Workshop on Computer Architecture Evaluation using Commercial Workloads (CAECW-11). 2008.




Top collaborators

Mori Ohara

Mori Ohara

Deputy Director, IBM Research Tokyo, Distinguished Engineer, Chief SW Engineer for Hybrid Cloud on IBM HW
Scott Trent

Scott Trent

Research Staff Member & Certified Linux Geek