⚡️ Speed up function bit_lscan by 5%
#107
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📄 5% (0.05x) speedup for
bit_lscaninaerospike_helpers/operations/bitwise_operations.py⏱️ Runtime :
1.73 milliseconds→1.65 milliseconds(best of5runs)📝 Explanation and details
The optimization achieves a 5% runtime improvement by eliminating redundant attribute lookups during dictionary construction.
Key Change:
The code now caches
aerospike.OP_BIT_LSCANas a module-level constant_BIT_LSCAN_OPinstead of performing an attribute lookup on theaerospikemodule every timebit_lscan()is called.Why This Improves Performance:
In Python, attribute access (
aerospike.OP_BIT_LSCAN) involves a dictionary lookup on the module's namespace. By storing this constant once at module initialization, we avoid repeating this lookup cost on every function invocation. The line profiler results confirm this: the line assigning theOP_KEYdropped from 2.55ms to 2.42ms (a ~5% improvement on that specific line).Impact Analysis:
test_bit_lscan_bin_name_preserved)test_bit_lscan_many_bins_same_paramsimproved from 195μs to 186μs)Since
bit_lscan()constructs operation dictionaries that are passed to Aerospike client methods, any code path that frequently builds bitwise operations will benefit from this micro-optimization. The improvement scales linearly with call frequency, making it especially valuable in performance-critical data processing pipelines.✅ Correctness verification report:
⚙️ Click to see Existing Unit Tests
test_bitwise_operations.py::TestBitwiseOperations.test_bit_lscantest_bitwise_operations.py::TestBitwiseOperations.test_bit_lscan_across_bytestest_bitwise_operations.py::TestBitwiseOperations.test_bit_lscan_bad_bin_nametest_bitwise_operations.py::TestBitwiseOperations.test_bit_lscan_bit_size_too_largetest_bitwise_operations.py::TestBitwiseOperations.test_bit_lscan_offset_out_of_rangetest_bitwise_operations.py::TestBitwiseOperations.test_bit_lscan_value_not_found🌀 Click to see Generated Regression Tests
To edit these changes
git checkout codeflash/optimize-bit_lscan-ml0jp179and push.