Sep 2026· Proceedings of the 17th ACM SIGOPS Asia-Pacific Workshop on Systems· 0 citations· 28 references
Abstract
The Linux default scheduler's fairness-oriented design frequently preempts short-running serverless functions, degrading Function-as-a-Service (FaaS) performance and increasing user costs. Existing solutions to remedy this problem propose custom OS scheduling policies based on custom kernels, external frameworks, or user-space polling. To address these limitations, we explore sched_ext, a recent Linux kernel feature providing an extensible scheduler framework via the Extended Berkeley Packet Filter (eBPF). We evaluate 11 prebuilt sched_ext schedulers under production-like FaaS workloads and show that 9 out of 11 policies outperform the default Linux scheduler (EEVDF) in both performance and user costs, reducing turnaround time by up to 61.1% and user costs by up to 51.3%. In this work, we demonstrate the significant impact of OS scheduling on FaaS environments and identify successful mechanisms to guide the design of future specialized schedulers.
This paper presents a serverless platform-driven CPU load balancing framework that enables the control plane to directly influence CPU scheduling through a custom Linux scheduler built on SchedExt(SCX).
A dynamic priority scheduling framework at the kernel level that enhances the CPU allocation to latency-sensitive containers running in Kubernetes environments and reveals a significant improvement in terms of latency reduction, enhanced throughput, efficient utilization of CPU resources, and stable performance of sche...
T. Rajkumar, Nishanth D., P. M et al.· Journal of Soft Computing Pa...· 0 citations
Modern high-performance applications increasingly bypass the host kernel for I/O and scheduling and rely on library OSes for operating-system services. High-performance library OSes are often built from scratch, but supporting unmodified applications requires reimplementing mature Linux semantics. Running Linux itself...
Kai-Fu Tian, You-Jie Zheng, Yi-Ren Zhang et al.· Proceedings of the ACM SIGOP...· 0 citations
RDPart is proposed, an OS-level Reuse-Driven LLC Partitioning policy designed to improve fairness while preserving the QoS of cloud workloads, and adopts a black-box design, making it well-suited for public cloud environments where real-time QoS feedback from applications is unavailable.
Javier Aznal, J. C. Saez, Carlos Bilbao· Proceedings of the Internati...· 1 citation
An eBPF-based scheduling framework is designed and implemented that complements existing kernel mechanisms to improve the accuracy of fine-grained CPU allocation while maintaining low overhead and demonstrates that the proposed approach significantly reduces resource overallocation and performance variability compared...
Chang-Yuan Lin, Mohammad Shahrad· Proceedings of the 4th Works...· 0 citations
Ultra-low-latency (ULL) SSDs enable cloud service providers to co-locate latency-sensitive services and throughputoriented background jobs on the same machines. However, their microsecond-scale latency creates a scheduling dilemma: conventional I/O schedulers introduce visible overhead, while disabling scheduling remov...
Ming Wei, Tzu-Chieh Huang, Chieh-Lin Tsai et al.· IEEE International Conferenc...· 0 citations
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