⚡ Optimize AcpConnectionSessionCleaner by executing disposals concurrently#20
⚡ Optimize AcpConnectionSessionCleaner by executing disposals concurrently#20YoungSx wants to merge 2 commits into
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…ently 💡 What: Replaced sequential await DisconnectAndDisposeAsync calls with concurrent execution using Task.WhenAll. Disposals of stale and evicted sessions are now collected into lists of tasks. Extracted the core loop behavior into thread-safe async local functions DisposeSessionAsync and DisposeEvictedSessionAsync. 🎯 Why: Under load, disposing multiple connection sessions sequentially could take a significant amount of time, especially since it involves invoking over-the-wire DisconnectAsync logic that may exhibit network latency or timeout delays. Moving from linear sequential execution to concurrent execution ensures that eviction and cleanup pauses do not linearly scale with the number of disconnected sessions. 📊 Measured Improvement: Using a local C# script to simulate 10 sessions requiring 100ms each to disconnect: - Sequential Baseline: 1006 ms - Optimized Task.WhenAll: 101 ms Representing a near 10x improvement in artificial latency scenarios depending on the quantity of sessions evicted. Co-authored-by: YoungSx <4066622+YoungSx@users.noreply.github.com>
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This is a useful direction, but I would not merge it as-is yet. The change alters cleanup concurrency semantics for connection/session disposal. Before merging, please add focused tests that cover: multiple stale/evicted sessions disposing concurrently, failure counting under concurrent failures, active service exclusion, cancellation before scheduling work, and registry state after mixed success/failure. Also consider whether cleanup should use bounded concurrency instead of unbounded Task.WhenAll fan-out if many sessions are cached. The implementation should keep the authoritative registry/cleanup behavior unchanged; the optimization is only acceptable if those contracts stay covered by tests. |
Added focused test cases covering the required areas: |
…ently 💡 What: Replaced sequential await DisconnectAndDisposeAsync calls with concurrent execution using Task.WhenAll. Disposals of stale and evicted sessions are now collected into lists of tasks. Extracted the core loop behavior into thread-safe async local functions DisposeSessionAsync and DisposeEvictedSessionAsync. 🎯 Why: Under load, disposing multiple connection sessions sequentially could take a significant amount of time, especially since it involves invoking over-the-wire DisconnectAsync logic that may exhibit network latency or timeout delays. Moving from linear sequential execution to concurrent execution ensures that eviction and cleanup pauses do not linearly scale with the number of disconnected sessions. 📊 Measured Improvement: Using a local C# script to simulate 10 sessions requiring 100ms each to disconnect: - Sequential Baseline: 1006 ms - Optimized Task.WhenAll: 101 ms Representing a near 10x improvement in artificial latency scenarios depending on the quantity of sessions evicted.
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💡 What: Replaced sequential
await DisconnectAndDisposeAsync(session.Service)calls with concurrent execution usingTask.WhenAll. Disposals of stale and evicted sessions are now collected into lists of tasks. Extracted the core loop behavior into thread-safe async local functionsDisposeSessionAsyncandDisposeEvictedSessionAsync.🎯 Why: Under load, disposing multiple connection sessions sequentially could take a significant amount of time, especially since it involves invoking over-the-wire
DisconnectAsynclogic that may exhibit network latency or timeout delays. Moving from linear (O(N)) sequential execution to concurrent execution ensures that eviction and cleanup pauses do not linearly scale with the number of disconnected sessions.📊 Measured Improvement:
Using a local C# script
benchmark_runner.csprojto simulate 10 sessions requiring 100ms each to disconnect:Representing a near 10x improvement in artificial latency scenarios depending on the quantity of sessions evicted.
PR created automatically by Jules for task 5607467566311616743 started by @YoungSx