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2e687bca5b
## Problem part of https://github.com/neondatabase/neon/issues/4392 ## Summary of changes This PR adds a new HashMap that maps persistent layer desc to the layer object *inside* LayerMap. Originally I directly went towards adding such layer cache in Timeline, but the changes are too many and cannot be reviewed as a reasonably-sized PR. Therefore, we take this intermediate step to change part of the codebase to use persistent layer desc, and come up with other PRs to move this hash map of layer desc to the timeline struct. Also, file_size is now part of the layer desc. --------- Signed-off-by: Alex Chi <iskyzh@gmail.com> Co-authored-by: bojanserafimov <bojan.serafimov7@gmail.com>
Pageserver Benchmarks
How to run
To run all benchmarks:
cargo bench
To run a specific file:
cargo bench --bench bench_layer_map
To run a specific function:
cargo bench --bench bench_layer_map -- real_map_uniform_queries