📄 8% (0.08x) speedup for V1SocketClient._is_binary_message in src/deepgram/listen/v1/socket_client.py

⏱️ Runtime : 11.4 microseconds → 10.5 microseconds (best of 1630 runs)

📝 Explanation and details

Impact: low
Impact_explanation: Looking at this optimization report, I need to assess the impact based on the provided criteria:

Runtime Analysis:

• Original runtime: 11.4 microseconds
• Optimized runtime: 10.5 microseconds
• Speedup: 7.95%

Key Factors:

1. Total runtime is very small: At 11.4 microseconds, this is well below the 100 microsecond threshold mentioned in the rubric for considering minor improvements.

2. Speedup percentage: At 7.95%, this is below the 15% threshold for relative speedup significance.

3. Replay test results: The speedups shown are 6.09% and 14.9%, which are mixed - one below the 5% threshold and one above, but the sample size is very small (only 2 tests).

4. Hot path consideration: No calling function details are provided, so I cannot determine if this function is in a hot path where the optimization effects would be multiplicative.

5. Optimization nature: This is a micro-optimization that moves tuple creation from runtime to module load time. While technically sound, the absolute time savings are minimal.

6. Consistency: The optimization appears to provide consistent but modest gains, but the absolute improvement is very small (less than 1 microsecond).

Assessment:
Given that:

• The total runtime is very small (11.4 microseconds < 100 microseconds)
• The relative speedup (7.95%) is below the 15% threshold
• No evidence of the function being in a hot path
• The absolute time savings are minimal

This represents a technically correct but low-impact optimization.

END OF IMPACT EXPLANATION

The optimization moves the tuple (bytes, bytearray) from being created inline within the isinstance() call to a module-level constant _bytes_types. This eliminates the overhead of creating a new tuple object on every function call.

Key change: The tuple creation is moved from runtime to module load time, reducing per-call overhead by ~3.4% (from 1458.1ns to 1409.6ns per hit).

Why it's faster: In Python, isinstance() with a tuple of types requires creating that tuple object each time when done inline. By pre-creating the tuple as a module constant, we avoid this repeated allocation and initialization. The interpreter can directly reference the pre-existing tuple object, saving both memory allocation time and tuple construction overhead.

Performance characteristics: This optimization provides consistent but modest gains across all usage patterns. The 7% overall speedup is most beneficial in high-frequency message processing scenarios where _is_binary_message() is called repeatedly, such as real-time audio streaming or bulk message classification workflows.

✅ Correctness verification report:

To edit these changes git checkout codeflash/optimize-V1SocketClient._is_binary_message-mguh7zil and push.