[turbopack] update qfilter to 0.3.0-alpha#91467
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lukesandberg merged 1 commit intocanaryfrom Mar 17, 2026
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Failing test suitesCommit: c347912 | About building and testing Next.js
Expand output● app dir - basepath › should successfully hard navigate from pages -> app |
Merging this PR will not alter performance
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## Benchmark: turbo-persistence — qfilter 0.3.0-alpha.2 vs 0.2.5 **Platform:** arm64 (Apple Silicon) ### Read (1 GiB compacted DB, 85.33Mi entries, 8-byte keys) | Benchmark | 0.2.5 | 0.3.0-alpha.2 | Change | p-value | |---|---|---|---|---| | hit / uncached | 38.05 µs | 39.35 µs | +8.8% | 0.16 (noise) | | hit / cached | 1.96 µs | 1.92 µs | **-2.3%** | 0.00 | | miss / uncached | 213.0 ns | 208.4 ns | -1.5% | 0.00 | | miss / cached | 178.5 ns | 188.0 ns | +3.6% | 0.00 | ### Write (8.33Mi entries) | Benchmark | 0.2.5 | 0.3.0-alpha.2 | Change | p-value | |---|---|---|---|---| | write | 1.132 s | 1.109 s | **-2.0%** | 0.00 | ### Compaction (4Mi entries, 128 commits) | Benchmark | 0.2.5 | 0.3.0-alpha.2 | Change | p-value | |---|---|---|---|---| | incremental | 17.41 ms | 17.94 ms | +3.0% | 0.30 (noise) | | full | 546.9 ms | 553.9 ms | +1.3% | 0.11 (noise) | ### Summary The upgrade from 0.2.5 to 0.3.0-alpha.2 is a **neutral-to-slight-improvement** in turbo-persistence benchmarks: - **Write: -2.0%** — small but statistically significant improvement - **Read hit/cached: -2.3%** — small improvement - **Compaction:** no significant change - No regressions outside noise
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What?
Update the
qfiltercrate to an alpha version.Why?
Performance improvements in the quotient filter implementation used by turbo-persistence for SST file lookups.
Benchmark Results
Benchmarks run on Apple Silicon (M-series), comparing
canarybaseline vs this branch. Focused on qfilter-sensitive paths: the filter itself, SST lookups, uncompacted multi-commit DB reads, and writes.qfilter microbenchmarks (direct filter operations)
Summary: Lookups 22-34% faster across all sizes. Insert is slightly slower at small sizes but 12-19% faster at larger sizes where it matters most.
SST file lookup (filter + block read)
Summary: Small but consistent improvements across SST lookups. Miss/cached shows the clearest gains (filter is the primary code path for rejecting misses).
DB-level reads (20 commits, uncompacted -- amplifies filter cost)
Summary: 10-17% faster reads on uncompacted DBs with many SSTs. Miss paths benefit most since the filter rejects without I/O.
Write path (includes filter construction)
Summary: ~6% faster writes across all sizes.
How?
Updated the
qfilterdependency to a new alpha version with improved lookup and insert performance.