Tag
syscall-overhead
- 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
- Nov 27, 2023 What a System Call Actually Costs Where the cycles go between the trap instruction and the return, which costs are fixed and which scale with the argument, and why mitigations changed the baseline. operating systems