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reactive backoff tuning

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liquidraver
2026-03-15 21:14:21 +01:00
parent 3bec5fedb9
commit 4ad8b13756
5 changed files with 57 additions and 18 deletions
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zephcore/include/mesh/ContentionTracker.h
+4 -2
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@@ -34,8 +34,9 @@ public:
* Caller should attempt reactive backoff when true. */
bool recordDupeIfTracked(uint32_t hash32, uint32_t now_ms);
/* Check if reactive extension is within cap for this entry.
* Returns the max additional ms allowed, 0 if cap reached. */
/* Per-dupe reactive delay: returns backoff_multiplier × airtime,
* clamped by hard cap minus cumulative extension so far.
* Returns 0 when hard cap reached or backoff disabled. */
uint16_t getReactiveHeadroom(uint32_t hash32, uint32_t airtime_ms) const;
/* Record that we added reactive extension to this entry. */
@@ -66,6 +67,7 @@ private:
static constexpr float FLOOD_SCALE = 0.116f; /* (0.5 - 0.05) / sqrt(15) */
static constexpr float MAX_FLOOD_FACTOR = 2.0f;
static constexpr float DEFAULT_BACKOFF_MULT = 0.5f;
static constexpr uint32_t REACTIVE_HARD_CAP_MS = 2000;
static constexpr uint32_t STALE_MS = 300000; /* 5 minutes */
struct Entry {