diff options
Diffstat (limited to 'src/policy/fees.h')
| -rw-r--r-- | src/policy/fees.h | 76 |
1 files changed, 48 insertions, 28 deletions
diff --git a/src/policy/fees.h b/src/policy/fees.h index 7aaba7d7d5..0df40df42a 100644 --- a/src/policy/fees.h +++ b/src/policy/fees.h @@ -61,34 +61,6 @@ class TxConfirmStats; * they've been outstanding. */ -/** Track confirm delays up to 25 blocks, can't estimate beyond that */ -static const unsigned int MAX_BLOCK_CONFIRMS = 25; - -/** Decay of .998 is a half-life of 346 blocks or about 2.4 days */ -static const double DEFAULT_DECAY = .998; - -/** Require greater than 95% of X feerate transactions to be confirmed within Y blocks for X to be big enough */ -static const double MIN_SUCCESS_PCT = .95; - -/** Require an avg of 1 tx in the combined feerate bucket per block to have stat significance */ -static const double SUFFICIENT_FEETXS = 1; - -// Minimum and Maximum values for tracking feerates -// The MIN_BUCKET_FEERATE should just be set to the lowest reasonable feerate we -// might ever want to track. Historically this has been 1000 since it was -// inheriting DEFAULT_MIN_RELAY_TX_FEE and changing it is disruptive as it -// invalidates old estimates files. So leave it at 1000 unless it becomes -// necessary to lower it, and then lower it substantially. -static constexpr double MIN_BUCKET_FEERATE = 1000; -static const double MAX_BUCKET_FEERATE = 1e7; -static const double INF_FEERATE = MAX_MONEY; - -// We have to lump transactions into buckets based on feerate, but we want to be able -// to give accurate estimates over a large range of potential feerates -// Therefore it makes sense to exponentially space the buckets -/** Spacing of FeeRate buckets */ -static const double FEE_SPACING = 1.1; - /** * We want to be able to estimate feerates that are needed on tx's to be included in * a certain number of blocks. Every time a block is added to the best chain, this class records @@ -96,6 +68,46 @@ static const double FEE_SPACING = 1.1; */ class CBlockPolicyEstimator { +private: + /** Track confirm delays up to 12 blocks medium decay */ + static constexpr unsigned int SHORT_BLOCK_CONFIRMS = 12; + /** Track confirm delays up to 48 blocks medium decay */ + static constexpr unsigned int MED_BLOCK_CONFIRMS = 48; + /** Track confirm delays up to 1008 blocks for longer decay */ + static constexpr unsigned int LONG_BLOCK_CONFIRMS = 1008; + + /** Decay of .962 is a half-life of 18 blocks or about 3 hours */ + static constexpr double SHORT_DECAY = .962; + /** Decay of .998 is a half-life of 144 blocks or about 1 day */ + static constexpr double MED_DECAY = .9952; + /** Decay of .9995 is a half-life of 1008 blocks or about 1 week */ + static constexpr double LONG_DECAY = .99931; + + /** Require greater than 95% of X feerate transactions to be confirmed within Y blocks for X to be big enough */ + static constexpr double HALF_SUCCESS_PCT = .6; + static constexpr double SUCCESS_PCT = .85; + static constexpr double DOUBLE_SUCCESS_PCT = .95; + + /** Require an avg of 1 tx in the combined feerate bucket per block to have stat significance */ + static constexpr double SUFFICIENT_FEETXS = 1; + + /** Minimum and Maximum values for tracking feerates + * The MIN_BUCKET_FEERATE should just be set to the lowest reasonable feerate we + * might ever want to track. Historically this has been 1000 since it was + * inheriting DEFAULT_MIN_RELAY_TX_FEE and changing it is disruptive as it + * invalidates old estimates files. So leave it at 1000 unless it becomes + * necessary to lower it, and then lower it substantially. + */ + static constexpr double MIN_BUCKET_FEERATE = 1000; + static constexpr double MAX_BUCKET_FEERATE = 1e7; + + /** Spacing of FeeRate buckets + * We have to lump transactions into buckets based on feerate, but we want to be able + * to give accurate estimates over a large range of potential feerates + * Therefore it makes sense to exponentially space the buckets + */ + static constexpr double FEE_SPACING = 1.05; + public: /** Create new BlockPolicyEstimator and initialize stats tracking classes with default values */ CBlockPolicyEstimator(); @@ -159,6 +171,14 @@ private: class FeeFilterRounder { +private: + static constexpr double MAX_FILTER_FEERATE = 1e7; + /** FEE_FILTER_SPACING is just used to provide some quantization of fee + * filter results. Historically it reused FEE_SPACING, but it is completely + * unrelated, and was made a separate constant so the two concepts are not + * tied together */ + static constexpr double FEE_FILTER_SPACING = 1.1; + public: /** Create new FeeFilterRounder */ FeeFilterRounder(const CFeeRate& minIncrementalFee); |