libstore-tests: Add reference scanning benchmark#13682
Merged
Ericson2314 merged 1 commit intoNixOS:masterfrom Aug 4, 2025
Merged
libstore-tests: Add reference scanning benchmark#13682Ericson2314 merged 1 commit intoNixOS:masterfrom
Ericson2314 merged 1 commit intoNixOS:masterfrom
Conversation
Contributor
Author
xokdvium
force-pushed
the
refscan-benchmark
branch
from
a69e828 to
585d914
Compare
This benchmark should provide a relatively realistic scenario for reference scanning. As shown by the following results, reference scanning code is already plenty fast and is definitely not a bottleneck: ``` BM_RefScanSinkRandom/10000 1672 ns 1682 ns 413354 bytes_per_second=5.53691Gi/s BM_RefScanSinkRandom/100000 11217 ns 11124 ns 64341 bytes_per_second=8.37231Gi/s BM_RefScanSinkRandom/1000000 205745 ns 204421 ns 3360 bytes_per_second=4.55591Gi/s BM_RefScanSinkRandom/5000000 1208407 ns 1201046 ns 597 bytes_per_second=3.87713Gi/s BM_RefScanSinkRandom/10000000 2534397 ns 2523344 ns 273 bytes_per_second=3.69083Gi/s ``` (Measurements on Ryzen 5900X via `nix build --file ci/gha/tests componentTests.nix-store-tests-run -L`)
xokdvium
force-pushed
the
refscan-benchmark
branch
from
585d914 to
20df0e5
Compare
Ericson2314
approved these changes
Aug 4, 2025
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
2 participants
Add this suggestion to a batch that can be applied as a single commit.This suggestion is invalid because no changes were made to the code.Suggestions cannot be applied while the pull request is closed.Suggestions cannot be applied while viewing a subset of changes.Only one suggestion per line can be applied in a batch.Add this suggestion to a batch that can be applied as a single commit.Applying suggestions on deleted lines is not supported.You must change the existing code in this line in order to create a valid suggestion.Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be applied on multi-line comments.Suggestions cannot be applied while the pull request is queued to merge.Suggestion cannot be applied right now. Please check back later.
Motivation
This benchmark should provide a relatively realistic scenario for reference scanning.
As shown by the following results, reference scanning code is already plenty fast and is definitely not a bottleneck:
(Measurements on Ryzen 5900X via
nix build --file ci/gha/tests componentTests.nix-store-tests-run -L)Context
Add 👍 to pull requests you find important.
The Nix maintainer team uses a GitHub project board to schedule and track reviews.