Hitting Peak File IO Performance with Zig
6 days ago
- #Zig
- #io_uring
- #performance
- Maximizing file IO performance on Linux using Zig with io_uring.
- Comparison between fio and Zig code for read/write benchmarks.
- Benchmark results: fio (4.083 GB/s write, 7.33 GB/s read), Zig (3.802 GB/s write, 6.996 GB/s read).
- Key features for performance: polled IO, kernel-side busy polling (SQ_THREAD_POLL), registered buffers.
- Need for two io_uring instances: one with IOPOLL enabled and one without.
- Implementation of a buffer interface for memory management in the library.
- Handling alignment requirements for direct IO operations.
- Use of SQTHREAD_POLL feature for performance benefits and its implications.
- Comparison with other libraries like glommio and unique optimizations in the Zig implementation.