Dynamic Target Gas for stable prices#2085
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Additional details and impacted files@@ Coverage Diff @@
## develop #2085 +/- ##
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+ Coverage 51.25% 51.32% +0.06%
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Files 878 878
Lines 152551 152660 +109
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+ Hits 78185 78346 +161
+ Misses 69268 69225 -43
+ Partials 5098 5089 -9
... and 16 files with indirect coverage changes
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marcello33
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Mar 4, 2026
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This adds new flags, once you're done with the PR, can you merge develop and run make docs? |
marcello33
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Mar 4, 2026
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kamuikatsurgi
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Mar 4, 2026
lucca30
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Mar 5, 2026
* dynamic target gas for fee spikes * set default values * address lint * increase coverage * address comments * make docs * address reports (cherry picked from commit e220fcf)
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Description
This PR introduces dynamic EIP-1559 target gas percentage adjustment (post-Lisovo) to reduce artificial scarcity and mitigate priority fee spikes during short demand bursts, while keeping base fee behavior predictable.
Why
Priority fee is pure market bidding and can spike aggressively when blocks are full. Our current “dynamic gas limit” approach reduces real capacity even when we could safely provide more, increasing the chance of 100% utilization and triggering sharp priority-fee bidding. Instead, we keep capacity and adjust gas target directly (since target is currently derived from gas limit) to reduce priority fee spike frequency/severity.
New CLI flags (Sealer)
--miner.enableDynamicTargetGasEnables dynamic target gas adjustment based on the parent block base fee (post-Lisovo). Mutually exclusive with
enableDynamicGasLimit.--miner.targetGasMinMinimum target gas percentage (1–100) used when base fee is below the configured lower bound.
--miner.targetGasMaxMaximum target gas percentage (1–100) used when base fee is above the configured upper bound.
Behavior
Adds
BorConfig.GetDynamicTargetGasPercentage(parentBaseFee, number):parentBaseFee == nil), or config incomplete (TargetBaseFee == nil) → fallback to existingGetTargetGasPercentage(number).TargetBaseFeeusing optionalBaseFeeBuffer:upper = desired + bufferlower = max(desired - buffer, 0)(underflow-safe)parentBaseFee > upper→ returnTargetGasMax(valid 1–100), otherwise fallback to static.parentBaseFee < lower→ returnTargetGasMin(valid 1–100), otherwise fallback to static.GetTargetGasPercentage(number)(no change).Changes
Breaking changes
No breaking changes, is compatible with post-Lisovo blocks.