Tag
timekeeping
- Oct 16, 2024 The vDSO and System Calls That Never Trap How a read-only code page mapped into every process serves clock and CPU queries without a privilege transition, and what that costs in portability. operating systems
- Jul 6, 2024 Clock Sources, Clock Events, and the Tick The two abstractions behind kernel time: hardware that can be read for a timestamp, hardware that can raise an interrupt at a chosen moment, and the periodic tick built from the second. operating systems