How Time Flies: Jiffies, Hi-Res Timers and the Tickless Kernel - Gilad Ben-Yossef

Abstract

This lecture, by Gilad Ben-Yossef, describes the Linux time keeping mechanism and related features, covering:

• Jiffies and HZ: how the Linux kernel measure the passing of time
• Hi-Res Timers: Accuracy and precision of the Linux time keeping code
• Clock sources: abstractions of time keeping hardware
• Tick-less kernel: how the above contribute to a better Linux performance in real time, power consumption and virtualization domains

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