DaniPopes:rustc-outputs - Branch - mozilla/sccache

Calculate rustc outputs concurrently with other hashing tasks

#2465

Comparing

DaniPopes:rustc-outputs

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05196cb

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main

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3fe258a

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Untouched: 27

Skipped: 2

Benchmarks

Skipped (2)

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digest_with_delimiters

benches/sccache_bench.rs

Skipped

8.8 µs*

digest_incremental_updates

benches/sccache_bench.rs

Skipped

20.5 µs*

Passed

lru_cache_eviction

benches/sccache_bench.rs

3.4 ms3.4 ms

hash_multiple_files

benches/sccache_bench.rs

938.6 µs938.3 µs

lru_cache_get_hit

benches/sccache_bench.rs

974.8 µs974.7 µs

build_workflow_incremental

benches/sccache_bench.rs

6.7 ms6.7 ms

decompression_low_ratio

benches/sccache_bench.rs

1.1 ms1.1 ms

decompression_high_ratio

benches/sccache_bench.rs

1.2 ms1.2 ms

cache_entry_create_large

benches/sccache_bench.rs

4.9 ms4.9 ms

hash_header_file

benches/sccache_bench.rs

204.7 µs204.7 µs

cache_entry_create_small

benches/sccache_bench.rs

1.4 ms1.4 ms

build_workflow_initial

benches/sccache_bench.rs

29.2 ms29.2 ms

cache_entry_batch_roundtrip

benches/sccache_bench.rs

22.8 ms22.8 ms

time_macro_finder_chunked

benches/sccache_bench.rs

971.8 µs971.8 µs

cache_entry_batch_create

benches/sccache_bench.rs

48 ms48 ms

cache_entry_roundtrip_small

benches/sccache_bench.rs

1.9 ms1.9 ms

cache_entry_roundtrip_large

benches/sccache_bench.rs

5.5 ms5.5 ms

compression_high_compressibility

benches/sccache_bench.rs

2.4 ms2.4 ms

build_workflow_rebuild

benches/sccache_bench.rs

4.6 ms4.6 ms

compression_low_compressibility

benches/sccache_bench.rs

2.1 ms2.1 ms

hash_large_data

benches/sccache_bench.rs

9.3 ms9.3 ms

lru_realistic_eviction_pressure

benches/sccache_bench.rs

9.1 ms9.1 ms

time_macro_finder_no_macros

benches/sccache_bench.rs

3 ms3 ms

time_macro_finder_with_macros

benches/sccache_bench.rs

2.6 ms2.6 ms

lru_sequential_scan_pattern

benches/sccache_bench.rs

359.5 µs359.7 µs

cache_key_generation

benches/sccache_bench.rs

89.5 µs89.6 µs

lru_cache_mixed_workload

benches/sccache_bench.rs

2.2 ms2.2 ms

lru_cache_insert

benches/sccache_bench.rs

2.7 ms2.8 ms

lru_hotcold_access_pattern

benches/sccache_bench.rs

143.4 µs143.9 µs

Commits

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Base

main

3fe258a

+0.01%

Calculate rustc outputs concurrently with other hashing tasks Currently, `sccache` invokes `rustc` twice for generating the hash key: once for the inputs and env-deps (`--emit dep-info`), and another time for the output file names (`--print file-names`). However, the latter is invoked only after the former finishes. There is no reason for this dependency. Run `get_compiler_outputs` concurrently with the other `rustc` and hashing tasks in `RustHasher::generate_hash_key`. I initially thought that these two invocations could be merged together, but `--print` stop compilation before the `--emit` is evaluated, so I went with the simpler approach of just running them at the same time.

4b2fbe8

3 months ago

by DaniPopes

-0.03%

Merge branch 'main' into rustc-outputs

05196cb

2 days ago

by sylvestre

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