* Modify baseline version to improve performance
- Consume and process stream in parallel with memory map buffers, parsing it directly
- Use int instead of float/double to store values
- Use Epsilon GC and graal
* Update src/main/java/dev/morling/onebrc/CalculateAverage_adriacabeza.java
* Update calculate_average_adriacabeza.sh
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Co-authored-by: Gunnar Morling <gunnar.morling@googlemail.com>
* - Read file in multiple threads if available: 17" -> 15" locally
- Changed String to BytesText with cache: 12" locally
* - Fixed bug
- BytesText to Text
- More checks when reading the file
* - Combining measurements should be thread safe
- More readability changes
* Initial version
* Small result merge optimisation
* Switched from reading bytes to longs
* Reading into internal buffer, test fixes
* Licence and minor string creation optimisation
* Hash collision fix
* Initial commit with custom implementation, 2:40
* Initial file-channel based version, 1:27
* Individual maps for executors, 0:54
* Use better-suited map: 0:34
* Verified correct, skip CharBuffer, :37
* Minor improvements and cleanup, 0:24
* String to byte[], 0:21
* Additional cleanup, use GraalVM, 0:17
* Faster number handling, 0:11
* Faster buffer reading, 0:08
* Prepare for environment with variable RAM and CPU, 0:08
* Fix bug causing issues with certain buffer sizes
* Larger overhead to not miss long station names that overlap buffers
* Reorder scripts and fix one-off bug
Implementation that uses the Vector API for the following
- scan for separators
- calculate hash
- n-way lookup in hash table
- parse digits
e; fix queue size
* feat(flippingbits): Improve parsing of station names
* chore(flippingbits): Remove obsolete import
* feat(flippingbits): Use custom hash map
* feat(flippingbits): Use UNSAFE
* fix(flippingbits): Support very small files
* chore(flippingbits): Few cleanups
* chore(flippingbits): Align names
* fix(flippingbits): Initialize hash with first byte
* fix(flippingbits): Fix initialization of hash value
* Update create_measurements.py
Added license header to the python script to avoid breaking the build.
* Update src/main/python/create_measurements.py
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Co-authored-by: Gunnar Morling <gunnar.morling@googlemail.com>
