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Increase MPSC ring buffer size#460

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nsavoire merged 4 commits into
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nsavoire/increase_mpsc_ring_buffer_size
Oct 30, 2025
Merged

Increase MPSC ring buffer size#460
nsavoire merged 4 commits into
mainfrom
nsavoire/increase_mpsc_ring_buffer_size

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What does this PR do?

  • Increase MPSC ring bufer size to 1024 pages (4MB)
  • Make allocation tracker state events high priority
  • Increase space reserved for high priority events to minimum of:
    • 2000 dealloc events
    • 5% of ring buffer size

@nsavoire
nsavoire requested a review from r1viollet as a code owner October 30, 2025 10:32
@nsavoire
nsavoire force-pushed the nsavoire/increase_mpsc_ring_buffer_size branch from f0dcc2a to 5050f63 Compare October 30, 2025 10:36
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pr-commenter Bot commented Oct 30, 2025

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Benchmark results for collatz

Parameters

Baseline Candidate
config baseline candidate
profiler-version ddprof 0.22.0+8250f933.80493314 ddprof 0.22.0+8315ec88.80723918

Summary

Found 0 performance improvements and 0 performance regressions! Performance is the same for 1 metrics, 0 unstable metrics.

See unchanged results
scenario Δ mean execution_time
scenario:ddprof -S bench-collatz --preset cpu_only collatz_runner.sh same

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pr-commenter Bot commented Oct 30, 2025

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Benchmark results for BadBoggleSolver_run

Parameters

Baseline Candidate
config baseline candidate
profiler-version ddprof 0.22.0+8250f933.80493314 ddprof 0.22.0+8315ec88.80723918

Summary

Found 0 performance improvements and 0 performance regressions! Performance is the same for 1 metrics, 0 unstable metrics.

See unchanged results
scenario Δ mean execution_time
scenario:ddprof -S bench-bad-boggle-solver BadBoggleSolver_run work 1000 same

@nsavoire
nsavoire force-pushed the nsavoire/increase_mpsc_ring_buffer_size branch from 5050f63 to 8315ec8 Compare October 30, 2025 10:55
@nsavoire
nsavoire merged commit 769e59d into main Oct 30, 2025
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@nsavoire
nsavoire deleted the nsavoire/increase_mpsc_ring_buffer_size branch October 30, 2025 11:11
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