Bio#
I am a third-year Ph.D. student in the Operating Systems Laboratory at Tsinghua University, advised by Prof. Yu Chen. My research focuses on operating systems, including scheduling, networking, and storage. I study hardware-software co-design and kernel-bypass techniques to improve system performance.
Education#
Tsinghua University, Ph.D. in Computer Science and Technology, 2023.8 - present
Recipient of the 2025 Comprehensive Scholarship. Expected graduation: June 2028.
Tsinghua University, B.Eng. in Computer Science and Technology, 2019.8 - 2023.7
Recipient of the 2019 Freshman Scholarship, 2020 Academic Excellence Scholarship, and 2022 Comprehensive Scholarship.
Research#
Yuekai Jia*, Kaifu Tian*, Yuyang You, Yu Chen, Kang Chen. Skyloft: A General High-Efficient Scheduling Framework in User Space. SOSP 2024.
Skyloft leverages user interrupts to support kernel-bypassing preemption, and is the first general user-space scheduling framework for multi-application workloads with microsecond-scale preemptive scheduling.
Skyloft introduces a scheduler development paradigm that builds diverse schedulers with a small set of common operations; policies that previously required heavy customization can now be implemented in only a few hundred lines.
Under both synthetic and real workloads on mainstream applications, Skyloft delivers performance that is competitive with, and often better than, existing solutions.
Internship#
Beijing Institute of Open Source Chip, Intern, 2025.6 - 2025.8 System Cache stream prefetcher design and implementation.
Competition Awards#
6th Loongson Cup, Team First Prize, 2022
Implemented an out-of-order superscalar CPU in SystemVerilog, supporting two-level register renaming, dual-fetch triple-issue, and early wake-up for cached loads.
Debugged CPU implementation with the Difftest framework.
Achieved a final frequency of 120 MHz, capable of running Linux and Busybox.