Tag
direct-io
- Nov 22, 2024 Alignment, O_DIRECT, and the Cost of Bypassing the Page Cache The alignment and size rules a direct I/O request must satisfy, which part of the page-cache path disappears and which remains, and the cases where the bypass loses rather than wins. performance engineering
- Jun 9, 2023 fsync, fdatasync, and Where the Durability Boundary Actually Sits What the kernel guarantees when a write returns, which metadata fdatasync skips, why direct I/O does not remove the need for a flush, and how double buffering wastes memory. databases