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QLinux QLinux is a Linux kernel that provides quality of service guarantees. QLinux, based on the Linux 2.2.x kernel, combines some of the latest innovations in operating systems research. It includes the following components: Hierarchical Start Time Fair Queueing (H-SFQ) CPU scheduler Hierarchical Start Time Fair Queueing (H-SFQ) network packet scheduler Lazy receiver processing (LRP) network subsystem Cello disk scheduling algorithm For downloading the kernel and for more details, visit the QLinux home page.