mmap vs read (+ O_DIRECT): Localhost Sequential Scan Lab
Hands-on mmap vs buffered read lab: 256 MiB p50 11.5 vs 5.4 GB/s; O_DIRECT ~0.9 GB/s warm-cache bypass. Fake endpoint-only GB/s disclosed. No Docker.
30 Sept 20265 min read
Topic
o_direct
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