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-rw-r--r--src/policy/fees.cpp168
-rw-r--r--src/policy/fees.h115
2 files changed, 76 insertions, 207 deletions
diff --git a/src/policy/fees.cpp b/src/policy/fees.cpp
index dae00d08a4..7113390cdf 100644
--- a/src/policy/fees.cpp
+++ b/src/policy/fees.cpp
@@ -14,10 +14,9 @@
#include "util.h"
void TxConfirmStats::Initialize(std::vector<double>& defaultBuckets,
- unsigned int maxConfirms, double _decay, std::string _dataTypeString)
+ unsigned int maxConfirms, double _decay)
{
decay = _decay;
- dataTypeString = _dataTypeString;
for (unsigned int i = 0; i < defaultBuckets.size(); i++) {
buckets.push_back(defaultBuckets[i]);
bucketMap[defaultBuckets[i]] = i;
@@ -87,10 +86,10 @@ double TxConfirmStats::EstimateMedianVal(int confTarget, double sufficientTxVal,
int maxbucketindex = buckets.size() - 1;
- // requireGreater means we are looking for the lowest fee/priority such that all higher
- // values pass, so we start at maxbucketindex (highest fee) and look at successively
+ // requireGreater means we are looking for the lowest feerate such that all higher
+ // values pass, so we start at maxbucketindex (highest feerate) and look at successively
// smaller buckets until we reach failure. Otherwise, we are looking for the highest
- // fee/priority such that all lower values fail, and we go in the opposite direction.
+ // feerate such that all lower values fail, and we go in the opposite direction.
unsigned int startbucket = requireGreater ? maxbucketindex : 0;
int step = requireGreater ? -1 : 1;
@@ -107,7 +106,7 @@ double TxConfirmStats::EstimateMedianVal(int confTarget, double sufficientTxVal,
bool foundAnswer = false;
unsigned int bins = unconfTxs.size();
- // Start counting from highest(default) or lowest fee/pri transactions
+ // Start counting from highest(default) or lowest feerate transactions
for (int bucket = startbucket; bucket >= 0 && bucket <= maxbucketindex; bucket += step) {
curFarBucket = bucket;
nConf += confAvg[confTarget - 1][bucket];
@@ -145,8 +144,8 @@ double TxConfirmStats::EstimateMedianVal(int confTarget, double sufficientTxVal,
double median = -1;
double txSum = 0;
- // Calculate the "average" fee of the best bucket range that met success conditions
- // Find the bucket with the median transaction and then report the average fee from that bucket
+ // Calculate the "average" feerate of the best bucket range that met success conditions
+ // Find the bucket with the median transaction and then report the average feerate from that bucket
// This is a compromise between finding the median which we can't since we don't save all tx's
// and reporting the average which is less accurate
unsigned int minBucket = bestNearBucket < bestFarBucket ? bestNearBucket : bestFarBucket;
@@ -166,8 +165,8 @@ double TxConfirmStats::EstimateMedianVal(int confTarget, double sufficientTxVal,
}
}
- LogPrint("estimatefee", "%3d: For conf success %s %4.2f need %s %s: %12.5g from buckets %8g - %8g Cur Bucket stats %6.2f%% %8.1f/(%.1f+%d mempool)\n",
- confTarget, requireGreater ? ">" : "<", successBreakPoint, dataTypeString,
+ LogPrint("estimatefee", "%3d: For conf success %s %4.2f need feerate %s: %12.5g from buckets %8g - %8g Cur Bucket stats %6.2f%% %8.1f/(%.1f+%d mempool)\n",
+ confTarget, requireGreater ? ">" : "<", successBreakPoint,
requireGreater ? ">" : "<", median, buckets[minBucket], buckets[maxBucket],
100 * nConf / (totalNum + extraNum), nConf, totalNum, extraNum);
@@ -200,10 +199,10 @@ void TxConfirmStats::Read(CAutoFile& filein)
filein >> fileBuckets;
numBuckets = fileBuckets.size();
if (numBuckets <= 1 || numBuckets > 1000)
- throw std::runtime_error("Corrupt estimates file. Must have between 2 and 1000 fee/pri buckets");
+ throw std::runtime_error("Corrupt estimates file. Must have between 2 and 1000 feerate buckets");
filein >> fileAvg;
if (fileAvg.size() != numBuckets)
- throw std::runtime_error("Corrupt estimates file. Mismatch in fee/pri average bucket count");
+ throw std::runtime_error("Corrupt estimates file. Mismatch in feerate average bucket count");
filein >> fileTxCtAvg;
if (fileTxCtAvg.size() != numBuckets)
throw std::runtime_error("Corrupt estimates file. Mismatch in tx count bucket count");
@@ -213,9 +212,9 @@ void TxConfirmStats::Read(CAutoFile& filein)
throw std::runtime_error("Corrupt estimates file. Must maintain estimates for between 1 and 1008 (one week) confirms");
for (unsigned int i = 0; i < maxConfirms; i++) {
if (fileConfAvg[i].size() != numBuckets)
- throw std::runtime_error("Corrupt estimates file. Mismatch in fee/pri conf average bucket count");
+ throw std::runtime_error("Corrupt estimates file. Mismatch in feerate conf average bucket count");
}
- // Now that we've processed the entire fee estimate data file and not
+ // Now that we've processed the entire feerate estimate data file and not
// thrown any errors, we can copy it to our data structures
decay = fileDecay;
buckets = fileBuckets;
@@ -242,8 +241,8 @@ void TxConfirmStats::Read(CAutoFile& filein)
for (unsigned int i = 0; i < buckets.size(); i++)
bucketMap[buckets[i]] = i;
- LogPrint("estimatefee", "Reading estimates: %u %s buckets counting confirms up to %u blocks\n",
- numBuckets, dataTypeString, maxConfirms);
+ LogPrint("estimatefee", "Reading estimates: %u buckets counting confirms up to %u blocks\n",
+ numBuckets, maxConfirms);
}
unsigned int TxConfirmStats::NewTx(unsigned int nBlockHeight, double val)
@@ -251,7 +250,6 @@ unsigned int TxConfirmStats::NewTx(unsigned int nBlockHeight, double val)
unsigned int bucketindex = bucketMap.lower_bound(val)->second;
unsigned int blockIndex = nBlockHeight % unconfTxs.size();
unconfTxs[blockIndex][bucketindex]++;
- LogPrint("estimatefee", "adding to %s", dataTypeString);
return bucketindex;
}
@@ -291,12 +289,10 @@ void CBlockPolicyEstimator::removeTx(uint256 hash)
hash.ToString().c_str());
return;
}
- TxConfirmStats *stats = pos->second.stats;
unsigned int entryHeight = pos->second.blockHeight;
unsigned int bucketIndex = pos->second.bucketIndex;
- if (stats != NULL)
- stats->removeTx(entryHeight, nBestSeenHeight, bucketIndex);
+ feeStats.removeTx(entryHeight, nBestSeenHeight, bucketIndex);
mapMemPoolTxs.erase(hash);
}
@@ -309,45 +305,14 @@ CBlockPolicyEstimator::CBlockPolicyEstimator(const CFeeRate& _minRelayFee)
vfeelist.push_back(bucketBoundary);
}
vfeelist.push_back(INF_FEERATE);
- feeStats.Initialize(vfeelist, MAX_BLOCK_CONFIRMS, DEFAULT_DECAY, "FeeRate");
-
- minTrackedPriority = AllowFreeThreshold() < MIN_PRIORITY ? MIN_PRIORITY : AllowFreeThreshold();
- std::vector<double> vprilist;
- for (double bucketBoundary = minTrackedPriority; bucketBoundary <= MAX_PRIORITY; bucketBoundary *= PRI_SPACING) {
- vprilist.push_back(bucketBoundary);
- }
- vprilist.push_back(INF_PRIORITY);
- priStats.Initialize(vprilist, MAX_BLOCK_CONFIRMS, DEFAULT_DECAY, "Priority");
-
- feeUnlikely = CFeeRate(0);
- feeLikely = CFeeRate(INF_FEERATE);
- priUnlikely = 0;
- priLikely = INF_PRIORITY;
-}
-
-bool CBlockPolicyEstimator::isFeeDataPoint(const CFeeRate &fee, double pri)
-{
- if ((pri < minTrackedPriority && fee >= minTrackedFee) ||
- (pri < priUnlikely && fee > feeLikely)) {
- return true;
- }
- return false;
-}
-
-bool CBlockPolicyEstimator::isPriDataPoint(const CFeeRate &fee, double pri)
-{
- if ((fee < minTrackedFee && pri >= minTrackedPriority) ||
- (fee < feeUnlikely && pri > priLikely)) {
- return true;
- }
- return false;
+ feeStats.Initialize(vfeelist, MAX_BLOCK_CONFIRMS, DEFAULT_DECAY);
}
void CBlockPolicyEstimator::processTransaction(const CTxMemPoolEntry& entry, bool fCurrentEstimate)
{
unsigned int txHeight = entry.GetHeight();
uint256 hash = entry.GetTx().GetHash();
- if (mapMemPoolTxs[hash].stats != NULL) {
+ if (mapMemPoolTxs.count(hash)) {
LogPrint("estimatefee", "Blockpolicy error mempool tx %s already being tracked\n",
hash.ToString().c_str());
return;
@@ -371,30 +336,11 @@ void CBlockPolicyEstimator::processTransaction(const CTxMemPoolEntry& entry, boo
return;
}
- // Fees are stored and reported as BTC-per-kb:
+ // Feerates are stored and reported as BTC-per-kb:
CFeeRate feeRate(entry.GetFee(), entry.GetTxSize());
- // Want the priority of the tx at confirmation. However we don't know
- // what that will be and its too hard to continue updating it
- // so use starting priority as a proxy
- double curPri = entry.GetPriority(txHeight);
mapMemPoolTxs[hash].blockHeight = txHeight;
-
- LogPrint("estimatefee", "Blockpolicy mempool tx %s ", hash.ToString().substr(0,10));
- // Record this as a priority estimate
- if (entry.GetFee() == 0 || isPriDataPoint(feeRate, curPri)) {
- mapMemPoolTxs[hash].stats = &priStats;
- mapMemPoolTxs[hash].bucketIndex = priStats.NewTx(txHeight, curPri);
- }
- // Record this as a fee estimate
- else if (isFeeDataPoint(feeRate, curPri)) {
- mapMemPoolTxs[hash].stats = &feeStats;
- mapMemPoolTxs[hash].bucketIndex = feeStats.NewTx(txHeight, (double)feeRate.GetFeePerK());
- }
- else {
- LogPrint("estimatefee", "not adding");
- }
- LogPrint("estimatefee", "\n");
+ mapMemPoolTxs[hash].bucketIndex = feeStats.NewTx(txHeight, (double)feeRate.GetFeePerK());
}
void CBlockPolicyEstimator::processBlockTx(unsigned int nBlockHeight, const CTxMemPoolEntry& entry)
@@ -417,21 +363,10 @@ void CBlockPolicyEstimator::processBlockTx(unsigned int nBlockHeight, const CTxM
return;
}
- // Fees are stored and reported as BTC-per-kb:
+ // Feerates are stored and reported as BTC-per-kb:
CFeeRate feeRate(entry.GetFee(), entry.GetTxSize());
- // Want the priority of the tx at confirmation. The priority when it
- // entered the mempool could easily be very small and change quickly
- double curPri = entry.GetPriority(nBlockHeight);
-
- // Record this as a priority estimate
- if (entry.GetFee() == 0 || isPriDataPoint(feeRate, curPri)) {
- priStats.Record(blocksToConfirm, curPri);
- }
- // Record this as a fee estimate
- else if (isFeeDataPoint(feeRate, curPri)) {
- feeStats.Record(blocksToConfirm, (double)feeRate.GetFeePerK());
- }
+ feeStats.Record(blocksToConfirm, (double)feeRate.GetFeePerK());
}
void CBlockPolicyEstimator::processBlock(unsigned int nBlockHeight,
@@ -452,41 +387,15 @@ void CBlockPolicyEstimator::processBlock(unsigned int nBlockHeight,
if (!fCurrentEstimate)
return;
- // Update the dynamic cutoffs
- // a fee/priority is "likely" the reason your tx was included in a block if >85% of such tx's
- // were confirmed in 2 blocks and is "unlikely" if <50% were confirmed in 10 blocks
- LogPrint("estimatefee", "Blockpolicy recalculating dynamic cutoffs:\n");
- priLikely = priStats.EstimateMedianVal(2, SUFFICIENT_PRITXS, MIN_SUCCESS_PCT, true, nBlockHeight);
- if (priLikely == -1)
- priLikely = INF_PRIORITY;
-
- double feeLikelyEst = feeStats.EstimateMedianVal(2, SUFFICIENT_FEETXS, MIN_SUCCESS_PCT, true, nBlockHeight);
- if (feeLikelyEst == -1)
- feeLikely = CFeeRate(INF_FEERATE);
- else
- feeLikely = CFeeRate(feeLikelyEst);
-
- priUnlikely = priStats.EstimateMedianVal(10, SUFFICIENT_PRITXS, UNLIKELY_PCT, false, nBlockHeight);
- if (priUnlikely == -1)
- priUnlikely = 0;
-
- double feeUnlikelyEst = feeStats.EstimateMedianVal(10, SUFFICIENT_FEETXS, UNLIKELY_PCT, false, nBlockHeight);
- if (feeUnlikelyEst == -1)
- feeUnlikely = CFeeRate(0);
- else
- feeUnlikely = CFeeRate(feeUnlikelyEst);
-
- // Clear the current block states
+ // Clear the current block state
feeStats.ClearCurrent(nBlockHeight);
- priStats.ClearCurrent(nBlockHeight);
// Repopulate the current block states
for (unsigned int i = 0; i < entries.size(); i++)
processBlockTx(nBlockHeight, entries[i]);
- // Update all exponential averages with the current block states
+ // Update all exponential averages with the current block state
feeStats.UpdateMovingAverages();
- priStats.UpdateMovingAverages();
LogPrint("estimatefee", "Blockpolicy after updating estimates for %u confirmed entries, new mempool map size %u\n",
entries.size(), mapMemPoolTxs.size());
@@ -522,7 +431,7 @@ CFeeRate CBlockPolicyEstimator::estimateSmartFee(int confTarget, int *answerFoun
if (answerFoundAtTarget)
*answerFoundAtTarget = confTarget - 1;
- // If mempool is limiting txs , return at least the min fee from the mempool
+ // If mempool is limiting txs , return at least the min feerate from the mempool
CAmount minPoolFee = pool.GetMinFee(GetArg("-maxmempool", DEFAULT_MAX_MEMPOOL_SIZE) * 1000000).GetFeePerK();
if (minPoolFee > 0 && minPoolFee > median)
return CFeeRate(minPoolFee);
@@ -535,51 +444,38 @@ CFeeRate CBlockPolicyEstimator::estimateSmartFee(int confTarget, int *answerFoun
double CBlockPolicyEstimator::estimatePriority(int confTarget)
{
- // Return failure if trying to analyze a target we're not tracking
- if (confTarget <= 0 || (unsigned int)confTarget > priStats.GetMaxConfirms())
- return -1;
-
- return priStats.EstimateMedianVal(confTarget, SUFFICIENT_PRITXS, MIN_SUCCESS_PCT, true, nBestSeenHeight);
+ return -1;
}
double CBlockPolicyEstimator::estimateSmartPriority(int confTarget, int *answerFoundAtTarget, const CTxMemPool& pool)
{
if (answerFoundAtTarget)
*answerFoundAtTarget = confTarget;
- // Return failure if trying to analyze a target we're not tracking
- if (confTarget <= 0 || (unsigned int)confTarget > priStats.GetMaxConfirms())
- return -1;
// If mempool is limiting txs, no priority txs are allowed
CAmount minPoolFee = pool.GetMinFee(GetArg("-maxmempool", DEFAULT_MAX_MEMPOOL_SIZE) * 1000000).GetFeePerK();
if (minPoolFee > 0)
return INF_PRIORITY;
- double median = -1;
- while (median < 0 && (unsigned int)confTarget <= priStats.GetMaxConfirms()) {
- median = priStats.EstimateMedianVal(confTarget++, SUFFICIENT_PRITXS, MIN_SUCCESS_PCT, true, nBestSeenHeight);
- }
-
- if (answerFoundAtTarget)
- *answerFoundAtTarget = confTarget - 1;
-
- return median;
+ return -1;
}
void CBlockPolicyEstimator::Write(CAutoFile& fileout)
{
fileout << nBestSeenHeight;
feeStats.Write(fileout);
- priStats.Write(fileout);
}
-void CBlockPolicyEstimator::Read(CAutoFile& filein)
+void CBlockPolicyEstimator::Read(CAutoFile& filein, int nFileVersion)
{
int nFileBestSeenHeight;
filein >> nFileBestSeenHeight;
feeStats.Read(filein);
- priStats.Read(filein);
nBestSeenHeight = nFileBestSeenHeight;
+ if (nFileVersion < 139900) {
+ TxConfirmStats priStats;
+ priStats.Read(filein);
+ }
}
FeeFilterRounder::FeeFilterRounder(const CFeeRate& minIncrementalFee)
diff --git a/src/policy/fees.h b/src/policy/fees.h
index bff6488d08..c7d2febfa5 100644
--- a/src/policy/fees.h
+++ b/src/policy/fees.h
@@ -19,60 +19,50 @@ class CTxMemPoolEntry;
class CTxMemPool;
/** \class CBlockPolicyEstimator
- * The BlockPolicyEstimator is used for estimating the fee or priority needed
+ * The BlockPolicyEstimator is used for estimating the feerate needed
* for a transaction to be included in a block within a certain number of
* blocks.
*
* At a high level the algorithm works by grouping transactions into buckets
- * based on having similar priorities or fees and then tracking how long it
+ * based on having similar feerates and then tracking how long it
* takes transactions in the various buckets to be mined. It operates under
- * the assumption that in general transactions of higher fee/priority will be
- * included in blocks before transactions of lower fee/priority. So for
- * example if you wanted to know what fee you should put on a transaction to
+ * the assumption that in general transactions of higher feerate will be
+ * included in blocks before transactions of lower feerate. So for
+ * example if you wanted to know what feerate you should put on a transaction to
* be included in a block within the next 5 blocks, you would start by looking
- * at the bucket with the highest fee transactions and verifying that a
+ * at the bucket with the highest feerate transactions and verifying that a
* sufficiently high percentage of them were confirmed within 5 blocks and
- * then you would look at the next highest fee bucket, and so on, stopping at
- * the last bucket to pass the test. The average fee of transactions in this
- * bucket will give you an indication of the lowest fee you can put on a
+ * then you would look at the next highest feerate bucket, and so on, stopping at
+ * the last bucket to pass the test. The average feerate of transactions in this
+ * bucket will give you an indication of the lowest feerate you can put on a
* transaction and still have a sufficiently high chance of being confirmed
* within your desired 5 blocks.
*
- * When a transaction enters the mempool or is included within a block we
- * decide whether it can be used as a data point for fee estimation, priority
- * estimation or neither. If the value of exactly one of those properties was
- * below the required minimum it can be used to estimate the other. In
- * addition, if a priori our estimation code would indicate that the
- * transaction would be much more quickly included in a block because of one
- * of the properties compared to the other, we can also decide to use it as
- * an estimate for that property.
- *
- * Here is a brief description of the implementation for fee estimation.
- * When a transaction that counts for fee estimation enters the mempool, we
+ * Here is a brief description of the implementation:
+ * When a transaction enters the mempool, we
* track the height of the block chain at entry. Whenever a block comes in,
- * we count the number of transactions in each bucket and the total amount of fee
+ * we count the number of transactions in each bucket and the total amount of feerate
* paid in each bucket. Then we calculate how many blocks Y it took each
* transaction to be mined and we track an array of counters in each bucket
* for how long it to took transactions to get confirmed from 1 to a max of 25
* and we increment all the counters from Y up to 25. This is because for any
* number Z>=Y the transaction was successfully mined within Z blocks. We
* want to save a history of this information, so at any time we have a
- * counter of the total number of transactions that happened in a given fee
+ * counter of the total number of transactions that happened in a given feerate
* bucket and the total number that were confirmed in each number 1-25 blocks
* or less for any bucket. We save this history by keeping an exponentially
* decaying moving average of each one of these stats. Furthermore we also
* keep track of the number unmined (in mempool) transactions in each bucket
* and for how many blocks they have been outstanding and use that to increase
- * the number of transactions we've seen in that fee bucket when calculating
+ * the number of transactions we've seen in that feerate bucket when calculating
* an estimate for any number of confirmations below the number of blocks
* they've been outstanding.
*/
/**
- * We will instantiate two instances of this class, one to track transactions
- * that were included in a block due to fee, and one for tx's included due to
- * priority. We will lump transactions into a bucket according to their approximate
- * fee or priority and then track how long it took for those txs to be included in a block
+ * We will instantiate an instance of this class to track transactions that were
+ * included in a block. We will lump transactions into a bucket according to their
+ * approximate feerate and then track how long it took for those txs to be included in a block
*
* The tracking of unconfirmed (mempool) transactions is completely independent of the
* historical tracking of transactions that have been confirmed in a block.
@@ -80,7 +70,7 @@ class CTxMemPool;
class TxConfirmStats
{
private:
- //Define the buckets we will group transactions into (both fee buckets and priority buckets)
+ //Define the buckets we will group transactions into
std::vector<double> buckets; // The upper-bound of the range for the bucket (inclusive)
std::map<double, unsigned int> bucketMap; // Map of bucket upper-bound to index into all vectors by bucket
@@ -97,16 +87,15 @@ private:
// and calculate the totals for the current block to update the moving averages
std::vector<std::vector<int> > curBlockConf; // curBlockConf[Y][X]
- // Sum the total priority/fee of all tx's in each bucket
+ // Sum the total feerate of all tx's in each bucket
// Track the historical moving average of this total over blocks
std::vector<double> avg;
// and calculate the total for the current block to update the moving average
std::vector<double> curBlockVal;
// Combine the conf counts with tx counts to calculate the confirmation % for each Y,X
- // Combine the total value with the tx counts to calculate the avg fee/priority per bucket
+ // Combine the total value with the tx counts to calculate the avg feerate per bucket
- std::string dataTypeString;
double decay;
// Mempool counts of outstanding transactions
@@ -123,9 +112,8 @@ public:
* @param defaultBuckets contains the upper limits for the bucket boundaries
* @param maxConfirms max number of confirms to track
* @param decay how much to decay the historical moving average per block
- * @param dataTypeString for logging purposes
*/
- void Initialize(std::vector<double>& defaultBuckets, unsigned int maxConfirms, double decay, std::string dataTypeString);
+ void Initialize(std::vector<double>& defaultBuckets, unsigned int maxConfirms, double decay);
/** Clear the state of the curBlock variables to start counting for the new block */
void ClearCurrent(unsigned int nBlockHeight);
@@ -133,7 +121,7 @@ public:
/**
* Record a new transaction data point in the current block stats
* @param blocksToConfirm the number of blocks it took this transaction to confirm
- * @param val either the fee or the priority when entered of the transaction
+ * @param val the feerate of the transaction
* @warning blocksToConfirm is 1-based and has to be >= 1
*/
void Record(int blocksToConfirm, double val);
@@ -150,14 +138,14 @@ public:
void UpdateMovingAverages();
/**
- * Calculate a fee or priority estimate. Find the lowest value bucket (or range of buckets
+ * Calculate a feerate estimate. Find the lowest value bucket (or range of buckets
* to make sure we have enough data points) whose transactions still have sufficient likelihood
* of being confirmed within the target number of confirmations
* @param confTarget target number of confirmations
* @param sufficientTxVal required average number of transactions per block in a bucket range
* @param minSuccess the success probability we require
- * @param requireGreater return the lowest fee/pri such that all higher values pass minSuccess OR
- * return the highest fee/pri such that all lower values fail minSuccess
+ * @param requireGreater return the lowest feerate such that all higher values pass minSuccess OR
+ * return the highest feerate such that all lower values fail minSuccess
* @param nBlockHeight the current block height
*/
double EstimateMedianVal(int confTarget, double sufficientTxVal,
@@ -184,35 +172,27 @@ 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 fee transactions to be confirmed within Y blocks for X to be big enough */
+/** 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;
static const double UNLIKELY_PCT = .5;
-/** Require an avg of 1 tx in the combined fee bucket per block to have stat significance */
+/** Require an avg of 1 tx in the combined feerate bucket per block to have stat significance */
static const double SUFFICIENT_FEETXS = 1;
-/** Require only an avg of 1 tx every 5 blocks in the combined pri bucket (way less pri txs) */
-static const double SUFFICIENT_PRITXS = .2;
-
-// Minimum and Maximum values for tracking fees and priorities
+// Minimum and Maximum values for tracking feerates
static const double MIN_FEERATE = 10;
static const double MAX_FEERATE = 1e7;
static const double INF_FEERATE = MAX_MONEY;
-static const double MIN_PRIORITY = 10;
-static const double MAX_PRIORITY = 1e16;
static const double INF_PRIORITY = 1e9 * MAX_MONEY;
-// We have to lump transactions into buckets based on fee or priority, but we want to be able
-// to give accurate estimates over a large range of potential fees and priorities
+// 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;
-/** Spacing of Priority buckets */
-static const double PRI_SPACING = 2;
-
/**
- * We want to be able to estimate fees or priorities that are needed on tx's to be included in
+ * 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
* stats on the transactions included in that block
*/
@@ -235,27 +215,26 @@ public:
/** Remove a transaction from the mempool tracking stats*/
void removeTx(uint256 hash);
- /** Is this transaction likely included in a block because of its fee?*/
- bool isFeeDataPoint(const CFeeRate &fee, double pri);
-
- /** Is this transaction likely included in a block because of its priority?*/
- bool isPriDataPoint(const CFeeRate &fee, double pri);
-
- /** Return a fee estimate */
+ /** Return a feerate estimate */
CFeeRate estimateFee(int confTarget);
- /** Estimate fee rate needed to get be included in a block within
+ /** Estimate feerate needed to get be included in a block within
* confTarget blocks. If no answer can be given at confTarget, return an
* estimate at the lowest target where one can be given.
*/
CFeeRate estimateSmartFee(int confTarget, int *answerFoundAtTarget, const CTxMemPool& pool);
- /** Return a priority estimate */
+ /** Return a priority estimate.
+ * DEPRECATED
+ * Returns -1
+ */
double estimatePriority(int confTarget);
/** Estimate priority needed to get be included in a block within
- * confTarget blocks. If no answer can be given at confTarget, return an
- * estimate at the lowest target where one can be given.
+ * confTarget blocks.
+ * DEPRECATED
+ * Returns -1 unless mempool is currently limited then returns INF_PRIORITY
+ * answerFoundAtTarget is set to confTarget
*/
double estimateSmartPriority(int confTarget, int *answerFoundAtTarget, const CTxMemPool& pool);
@@ -263,29 +242,23 @@ public:
void Write(CAutoFile& fileout);
/** Read estimation data from a file */
- void Read(CAutoFile& filein);
+ void Read(CAutoFile& filein, int nFileVersion);
private:
CFeeRate minTrackedFee; //!< Passed to constructor to avoid dependency on main
- double minTrackedPriority; //!< Set to AllowFreeThreshold
unsigned int nBestSeenHeight;
struct TxStatsInfo
{
- TxConfirmStats *stats;
unsigned int blockHeight;
unsigned int bucketIndex;
- TxStatsInfo() : stats(NULL), blockHeight(0), bucketIndex(0) {}
+ TxStatsInfo() : blockHeight(0), bucketIndex(0) {}
};
// map of txids to information about that transaction
std::map<uint256, TxStatsInfo> mapMemPoolTxs;
/** Classes to track historical data on transaction confirmations */
- TxConfirmStats feeStats, priStats;
-
- /** Breakpoints to help determine whether a transaction was confirmed by priority or Fee */
- CFeeRate feeLikely, feeUnlikely;
- double priLikely, priUnlikely;
+ TxConfirmStats feeStats;
};
class FeeFilterRounder
generated by cgit v1.2.3 (git 2.26.2) at 2024-11-14 22:07:09 +0000