⚡ Bolt: [performance improvement] concurrent PR state checks#70
⚡ Bolt: [performance improvement] concurrent PR state checks#70xbmc4lyfe wants to merge 1 commit into
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- What: Use concurrent.futures.ThreadPoolExecutor in _filter_to_still_open_prs to check PR states concurrently. - Why: Checking states for multiple PRs sequentially with the gh cli spawns multiple processes which is a significant performance bottleneck (N+1 delays). - Impact: Substantially reduces wait times when running the CLI over many PRs by running IO-bound operations in parallel. - Measurement: Run the Ralph loop locally against a repo with many PRs; notice reduced latency in polling loops. Co-authored-by: xbmc4lyfe <273732874+xbmc4lyfe@users.noreply.github.com>
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📜 Recent review details🔇 Additional comments (4)
📝 WalkthroughSummary by CodeRabbit
WalkthroughThis PR optimizes PR state checking by parallelizing sequential ChangesConcurrent PR State Checks
🎯 2 (Simple) | ⏱️ ~10 minutes
🚥 Pre-merge checks | ✅ 4 | ❌ 1❌ Failed checks (1 warning)
✅ Passed checks (4 passed)
✏️ Tip: You can configure your own custom pre-merge checks in the settings. ✨ Finishing Touches📝 Generate docstrings
🧪 Generate unit tests (beta)
✨ Simplify code
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| "fan-out spawn.".format(pr) | ||
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| # ⚡ Bolt Optimization: Use concurrent checks to avoid N+1 sequential execution delays | ||
| with concurrent.futures.ThreadPoolExecutor(max_workers=min(10, len(pr_numbers))) as executor: |
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When --all-prs is filtering several PRs and the operator hits Ctrl-C while one of these concurrent gh pr view checks is slow, rate-limited, or hung, leaving this with ThreadPoolExecutor(...) block waits for all submitted workers to finish before the interrupt can unwind. Before this change there was only the foreground gh command to interrupt; now an early abort can be delayed by the slowest background check, which weakens the documented operator-interrupt escape hatch for fan-out startup.
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💡 What: The optimization implemented
Used
concurrent.futures.ThreadPoolExecutorto execute_pr_is_still_openconcurrently in_filter_to_still_open_prswhen multiple PRs are processed. A helper function was added to wrap the check so exceptions could be caught per-PR without blocking the rest.🎯 Why: The performance problem it solves
Checking states for multiple PRs sequentially via the
ghCLI spawns multiple background processes sequentially, resulting in severe N+1 delays and acting as a major performance bottleneck for the loop supervisor.📊 Impact: Expected performance improvement
Significantly reduces time spent waiting for
gh pr viewoutput when polling multiple PRs, especially in network-heavy or rate-limited environments.🔬 Measurement: How to verify the improvement
Run the Ralph CLI with a base containing multiple active/stale PRs and observe the total turnaround time compared to main. Wait time scaling linearly with open PRs will be eliminated up to max workers.
PR created automatically by Jules for task 13400640328189127812 started by @xbmc4lyfe