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Thread Scheduling in Linux

Thread Scheduling in Linux . History Kernel 2.0 Kernel 2.2 Kernel 2.4 Kernel 2.5. Quick Scheduler Theory Walkthrough. Components Timers Context switching Algorithms How compilers affect all. Patches ! Patches ! Patches !. Preemption patch – Robert Love O(1) patch – Ingo Molnar.

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Thread Scheduling in Linux

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  1. Thread Scheduling in Linux • History • Kernel 2.0 • Kernel 2.2 • Kernel 2.4 • Kernel 2.5

  2. Quick Scheduler Theory Walkthrough • Components • Timers • Context switching • Algorithms • How compilers affect all ...

  3. Patches ! Patches ! Patches ! • Preemption patch – Robert Love • O(1) patch – Ingo Molnar

  4. Threads – How the user sees them • POSIX threads • Kernel threads vs. User threads • So what do we have – kernel threads or user threads ? • NPTL or NGTL

  5. Design Drivers • User responsiveness • Fair-share scheduling • Good SMP scheduling

  6. The Linux 2.5 scheduler • Motivations • Data Structures • Algorithms • Control Flow • Improvements

  7. Kernel Preemption • Advantages • How to achieve preemption

  8. Ingo Molnar's O(1) patch • What is O(1) ? • What's not O(1) in 2.4 • How O(1) is achieve • Data Structures • Algorithms

  9. The Big Picture • The scheduler in the big scheme of things • How other components of the kernel fit in • Life, the universe, and everything !

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