많은 참석 부탁드립니다.
일시 : 2026년 4월 23일(목) 오후 4시
장소 : 정운오IT교양관 609호
연사 : Dr.Tianzheng Wang
Title: Low-Latency Preemptive Transaction Scheduling with Userspace Interrupts
Abstract:
Everything takes time in a database engine: I/O, memory stall, synchronization and admission control all add additional delays in addition to running transaction logic. While most work has focused on hiding latencies caused by stalls and synchronization, in mixed workloads the impact of admission control becomes more pronounced. This talk will revisit the idea of preemptive scheduling for database systems - a technique that was discouraged - and elaborate how it is now desirable with new userspace interrupts and modern concurrency control protocols. We will also emphasize on the practical considerations and workarounds necessary for user interrupts to work with existing database system designs.