⚡ Bolt: Optimize pixel data reading and remove reflection#374
⚡ Bolt: Optimize pixel data reading and remove reflection#374google-labs-jules[bot] wants to merge 1 commit intomainfrom
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- Optimize `readNativeFrame` in `pkg/read.go` to use chunked reading (4KB buffer). - Previously, `io.ReadFull` was called for every pixel sample, causing massive overhead. - Chunked reading reduces function call overhead and drastically improves parsing speed for native pixel data. - Benchmark `BenchmarkParse/NoOptions/6.dcm-4` improved from ~6.0ms to ~0.94ms (~6x speedup). - Other benchmarks show 2x-3x speedup. - Optimize `pkg/dicomio/reader.go` by replacing `binary.Read` with direct `io.ReadFull` calls. - Removes reflection overhead for basic types (`ReadUInt16`, etc.). - Uses fixed-size stack buffers to avoid allocations. - Added performance journal entry in `.jules/bolt.md`.
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This PR implements two performance optimizations:
readNativeFrameto read pixel data in 4KB chunks instead of reading sample-by-sample. This significantly reduces I/O function call overhead.binary.ReadReflection: Updatedpkg/dicomio/reader.goto useio.ReadFullandbinary.ByteOrderdirectly, avoiding the reflection overhead ofbinary.Read.Benchmarks show a 3x-6x speedup in parsing DICOM files with native pixel data.
PR created automatically by Jules for task 1511503857431444166 started by @suyashkumar