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View Code? Open in Web Editor NEWCMSC421: Predicted shortest job first (PSJF) scheduler hack to the Linux kernel's scheduler
CMSC421: Predicted shortest job first (PSJF) scheduler hack to the Linux kernel's scheduler
Some attempt at a predicted shortest job first (PSJF) scheduler for the Linux kernel. The PSJF scheduler predicts a burst duration for an incoming task for the the CPU by looking at previous tasks and how much CPU time they took, and calculates an estimate by using a formula. Incoming jobs are sorted by shortest predictes CPU time in this scheduler. It runs a lot slower than the normal scheduler. Install notes: Apply the patch file over a clean copy of linux-3.10.10 sources or copy files manually onto a clean extraction of linux-3.10.10 sources and allow to overwrite. Compile the kernel with SMP disabled and with SCHED_RR/FIFO disabled. Only tested for a 32-bit kernel. Compilation for 64-bit kernel may or may not work, or may cause errors upon boot.
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