memoryview

memoryview vs bytes Slice: Localhost Lab

mmap vs read Byte-Sum Scan: Localhost Lab

Hands-on mmap vs read vs chunked sequential byte-sum scan lab: real MB/s on a generated fixture (not page-touch), measured on Linux localhost for SREs.

array.array vs list[int] vs bytes Lab

A hands-on Linux localhost lab comparing memory density and numeric throughput for list[int], array.array('i'), bytearray, and memoryview.

struct.pack vs to_bytes vs memoryview Lab

Benchmarking fixed-record packing with struct.pack, Struct.pack_into, int.to_bytes, and memoryview on Linux localhost.

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.