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-rw-r--r--src/bench/mempool_eviction.cpp2
-rw-r--r--src/policy/fees.cpp84
-rw-r--r--src/policy/fees.h11
-rw-r--r--src/test/mempool_tests.cpp2
-rw-r--r--src/test/test_bitcoin.cpp5
-rw-r--r--src/test/test_bitcoin.h4
-rw-r--r--src/txmempool.cpp23
-rw-r--r--src/txmempool.h11
-rw-r--r--src/validation.cpp24
-rw-r--r--src/validation.h2
-rw-r--r--src/wallet/wallet.cpp2
11 files changed, 94 insertions, 76 deletions
diff --git a/src/bench/mempool_eviction.cpp b/src/bench/mempool_eviction.cpp
index d04c036841..5790d51a82 100644
--- a/src/bench/mempool_eviction.cpp
+++ b/src/bench/mempool_eviction.cpp
@@ -18,7 +18,7 @@ static void AddTx(const CTransaction& tx, const CAmount& nFee, CTxMemPool& pool)
unsigned int sigOpCost = 4;
LockPoints lp;
pool.addUnchecked(tx.GetHash(), CTxMemPoolEntry(
- MakeTransactionRef(tx), nFee, nTime, dPriority, nHeight, pool.HasNoInputsOf(tx),
+ MakeTransactionRef(tx), nFee, nTime, dPriority, nHeight,
tx.GetValueOut(), spendsCoinbase, sigOpCost, lp));
}
diff --git a/src/policy/fees.cpp b/src/policy/fees.cpp
index a1b785e3e7..5407aefb45 100644
--- a/src/policy/fees.cpp
+++ b/src/policy/fees.cpp
@@ -281,23 +281,25 @@ void TxConfirmStats::removeTx(unsigned int entryHeight, unsigned int nBestSeenHe
}
}
-void CBlockPolicyEstimator::removeTx(uint256 hash)
+// This function is called from CTxMemPool::removeUnchecked to ensure
+// txs removed from the mempool for any reason are no longer
+// tracked. Txs that were part of a block have already been removed in
+// processBlockTx to ensure they are never double tracked, but it is
+// of no harm to try to remove them again.
+bool CBlockPolicyEstimator::removeTx(uint256 hash)
{
std::map<uint256, TxStatsInfo>::iterator pos = mapMemPoolTxs.find(hash);
- if (pos == mapMemPoolTxs.end()) {
- LogPrint("estimatefee", "Blockpolicy error mempool tx %s not found for removeTx\n",
- hash.ToString().c_str());
- return;
+ if (pos != mapMemPoolTxs.end()) {
+ feeStats.removeTx(pos->second.blockHeight, nBestSeenHeight, pos->second.bucketIndex);
+ mapMemPoolTxs.erase(hash);
+ return true;
+ } else {
+ return false;
}
- unsigned int entryHeight = pos->second.blockHeight;
- unsigned int bucketIndex = pos->second.bucketIndex;
-
- feeStats.removeTx(entryHeight, nBestSeenHeight, bucketIndex);
- mapMemPoolTxs.erase(hash);
}
CBlockPolicyEstimator::CBlockPolicyEstimator(const CFeeRate& _minRelayFee)
- : nBestSeenHeight(0)
+ : nBestSeenHeight(0), trackedTxs(0), untrackedTxs(0)
{
static_assert(MIN_FEERATE > 0, "Min feerate must be nonzero");
minTrackedFee = _minRelayFee < CFeeRate(MIN_FEERATE) ? CFeeRate(MIN_FEERATE) : _minRelayFee;
@@ -309,7 +311,7 @@ CBlockPolicyEstimator::CBlockPolicyEstimator(const CFeeRate& _minRelayFee)
feeStats.Initialize(vfeelist, MAX_BLOCK_CONFIRMS, DEFAULT_DECAY);
}
-void CBlockPolicyEstimator::processTransaction(const CTxMemPoolEntry& entry, bool fCurrentEstimate)
+void CBlockPolicyEstimator::processTransaction(const CTxMemPoolEntry& entry, bool validFeeEstimate)
{
unsigned int txHeight = entry.GetHeight();
uint256 hash = entry.GetTx().GetHash();
@@ -319,23 +321,21 @@ void CBlockPolicyEstimator::processTransaction(const CTxMemPoolEntry& entry, boo
return;
}
- if (txHeight < nBestSeenHeight) {
+ if (txHeight != nBestSeenHeight) {
// Ignore side chains and re-orgs; assuming they are random they don't
// affect the estimate. We'll potentially double count transactions in 1-block reorgs.
+ // Ignore txs if BlockPolicyEstimator is not in sync with chainActive.Tip().
+ // It will be synced next time a block is processed.
return;
}
// Only want to be updating estimates when our blockchain is synced,
// otherwise we'll miscalculate how many blocks its taking to get included.
- if (!fCurrentEstimate)
- return;
-
- if (!entry.WasClearAtEntry()) {
- // This transaction depends on other transactions in the mempool to
- // be included in a block before it will be able to be included, so
- // we shouldn't include it in our calculations
+ if (!validFeeEstimate) {
+ untrackedTxs++;
return;
}
+ trackedTxs++;
// Feerates are stored and reported as BTC-per-kb:
CFeeRate feeRate(entry.GetFee(), entry.GetTxSize());
@@ -344,34 +344,33 @@ void CBlockPolicyEstimator::processTransaction(const CTxMemPoolEntry& entry, boo
mapMemPoolTxs[hash].bucketIndex = feeStats.NewTx(txHeight, (double)feeRate.GetFeePerK());
}
-void CBlockPolicyEstimator::processBlockTx(unsigned int nBlockHeight, const CTxMemPoolEntry& entry)
+bool CBlockPolicyEstimator::processBlockTx(unsigned int nBlockHeight, const CTxMemPoolEntry* entry)
{
- if (!entry.WasClearAtEntry()) {
- // This transaction depended on other transactions in the mempool to
- // be included in a block before it was able to be included, so
- // we shouldn't include it in our calculations
- return;
+ if (!removeTx(entry->GetTx().GetHash())) {
+ // This transaction wasn't being tracked for fee estimation
+ return false;
}
// How many blocks did it take for miners to include this transaction?
// blocksToConfirm is 1-based, so a transaction included in the earliest
// possible block has confirmation count of 1
- int blocksToConfirm = nBlockHeight - entry.GetHeight();
+ int blocksToConfirm = nBlockHeight - entry->GetHeight();
if (blocksToConfirm <= 0) {
// This can't happen because we don't process transactions from a block with a height
// lower than our greatest seen height
LogPrint("estimatefee", "Blockpolicy error Transaction had negative blocksToConfirm\n");
- return;
+ return false;
}
// Feerates are stored and reported as BTC-per-kb:
- CFeeRate feeRate(entry.GetFee(), entry.GetTxSize());
+ CFeeRate feeRate(entry->GetFee(), entry->GetTxSize());
feeStats.Record(blocksToConfirm, (double)feeRate.GetFeePerK());
+ return true;
}
void CBlockPolicyEstimator::processBlock(unsigned int nBlockHeight,
- std::vector<CTxMemPoolEntry>& entries, bool fCurrentEstimate)
+ std::vector<const CTxMemPoolEntry*>& entries)
{
if (nBlockHeight <= nBestSeenHeight) {
// Ignore side chains and re-orgs; assuming they are random
@@ -381,25 +380,30 @@ void CBlockPolicyEstimator::processBlock(unsigned int nBlockHeight,
// transaction fees."
return;
}
- nBestSeenHeight = nBlockHeight;
- // Only want to be updating estimates when our blockchain is synced,
- // otherwise we'll miscalculate how many blocks its taking to get included.
- if (!fCurrentEstimate)
- return;
+ // Must update nBestSeenHeight in sync with ClearCurrent so that
+ // calls to removeTx (via processBlockTx) correctly calculate age
+ // of unconfirmed txs to remove from tracking.
+ nBestSeenHeight = nBlockHeight;
- // Clear the current block state
+ // Clear the current block state and update unconfirmed circular buffer
feeStats.ClearCurrent(nBlockHeight);
+ unsigned int countedTxs = 0;
// Repopulate the current block states
- for (unsigned int i = 0; i < entries.size(); i++)
- processBlockTx(nBlockHeight, entries[i]);
+ for (unsigned int i = 0; i < entries.size(); i++) {
+ if (processBlockTx(nBlockHeight, entries[i]))
+ countedTxs++;
+ }
// Update all exponential averages with the current block state
feeStats.UpdateMovingAverages();
- LogPrint("estimatefee", "Blockpolicy after updating estimates for %u confirmed entries, new mempool map size %u\n",
- entries.size(), mapMemPoolTxs.size());
+ LogPrint("estimatefee", "Blockpolicy after updating estimates for %u of %u txs in block, since last block %u of %u tracked, new mempool map size %u\n",
+ countedTxs, entries.size(), trackedTxs, trackedTxs + untrackedTxs, mapMemPoolTxs.size());
+
+ trackedTxs = 0;
+ untrackedTxs = 0;
}
CFeeRate CBlockPolicyEstimator::estimateFee(int confTarget)
diff --git a/src/policy/fees.h b/src/policy/fees.h
index 1f10cfb237..064466afe4 100644
--- a/src/policy/fees.h
+++ b/src/policy/fees.h
@@ -203,16 +203,16 @@ public:
/** Process all the transactions that have been included in a block */
void processBlock(unsigned int nBlockHeight,
- std::vector<CTxMemPoolEntry>& entries, bool fCurrentEstimate);
+ std::vector<const CTxMemPoolEntry*>& entries);
/** Process a transaction confirmed in a block*/
- void processBlockTx(unsigned int nBlockHeight, const CTxMemPoolEntry& entry);
+ bool processBlockTx(unsigned int nBlockHeight, const CTxMemPoolEntry* entry);
/** Process a transaction accepted to the mempool*/
- void processTransaction(const CTxMemPoolEntry& entry, bool fCurrentEstimate);
+ void processTransaction(const CTxMemPoolEntry& entry, bool validFeeEstimate);
/** Remove a transaction from the mempool tracking stats*/
- void removeTx(uint256 hash);
+ bool removeTx(uint256 hash);
/** Return a feerate estimate */
CFeeRate estimateFee(int confTarget);
@@ -258,6 +258,9 @@ private:
/** Classes to track historical data on transaction confirmations */
TxConfirmStats feeStats;
+
+ unsigned int trackedTxs;
+ unsigned int untrackedTxs;
};
class FeeFilterRounder
diff --git a/src/test/mempool_tests.cpp b/src/test/mempool_tests.cpp
index 37f0de354e..91f549fe48 100644
--- a/src/test/mempool_tests.cpp
+++ b/src/test/mempool_tests.cpp
@@ -120,7 +120,6 @@ BOOST_AUTO_TEST_CASE(MempoolIndexingTest)
{
CTxMemPool pool(CFeeRate(0));
TestMemPoolEntryHelper entry;
- entry.hadNoDependencies = true;
/* 3rd highest fee */
CMutableTransaction tx1 = CMutableTransaction();
@@ -323,7 +322,6 @@ BOOST_AUTO_TEST_CASE(MempoolAncestorIndexingTest)
{
CTxMemPool pool(CFeeRate(0));
TestMemPoolEntryHelper entry;
- entry.hadNoDependencies = true;
/* 3rd highest fee */
CMutableTransaction tx1 = CMutableTransaction();
diff --git a/src/test/test_bitcoin.cpp b/src/test/test_bitcoin.cpp
index 672cd11428..f0eaab2217 100644
--- a/src/test/test_bitcoin.cpp
+++ b/src/test/test_bitcoin.cpp
@@ -147,12 +147,11 @@ CTxMemPoolEntry TestMemPoolEntryHelper::FromTx(const CMutableTransaction &tx, CT
}
CTxMemPoolEntry TestMemPoolEntryHelper::FromTx(const CTransaction &txn, CTxMemPool *pool) {
- bool hasNoDependencies = pool ? pool->HasNoInputsOf(txn) : hadNoDependencies;
// Hack to assume either its completely dependent on other mempool txs or not at all
- CAmount inChainValue = hasNoDependencies ? txn.GetValueOut() : 0;
+ CAmount inChainValue = pool && pool->HasNoInputsOf(txn) ? txn.GetValueOut() : 0;
return CTxMemPoolEntry(MakeTransactionRef(txn), nFee, nTime, dPriority, nHeight,
- hasNoDependencies, inChainValue, spendsCoinbase, sigOpCost, lp);
+ inChainValue, spendsCoinbase, sigOpCost, lp);
}
void Shutdown(void* parg)
diff --git a/src/test/test_bitcoin.h b/src/test/test_bitcoin.h
index 0fe77437e4..5ef6fa764f 100644
--- a/src/test/test_bitcoin.h
+++ b/src/test/test_bitcoin.h
@@ -70,14 +70,13 @@ struct TestMemPoolEntryHelper
int64_t nTime;
double dPriority;
unsigned int nHeight;
- bool hadNoDependencies;
bool spendsCoinbase;
unsigned int sigOpCost;
LockPoints lp;
TestMemPoolEntryHelper() :
nFee(0), nTime(0), dPriority(0.0), nHeight(1),
- hadNoDependencies(false), spendsCoinbase(false), sigOpCost(4) { }
+ spendsCoinbase(false), sigOpCost(4) { }
CTxMemPoolEntry FromTx(const CMutableTransaction &tx, CTxMemPool *pool = NULL);
CTxMemPoolEntry FromTx(const CTransaction &tx, CTxMemPool *pool = NULL);
@@ -87,7 +86,6 @@ struct TestMemPoolEntryHelper
TestMemPoolEntryHelper &Time(int64_t _time) { nTime = _time; return *this; }
TestMemPoolEntryHelper &Priority(double _priority) { dPriority = _priority; return *this; }
TestMemPoolEntryHelper &Height(unsigned int _height) { nHeight = _height; return *this; }
- TestMemPoolEntryHelper &HadNoDependencies(bool _hnd) { hadNoDependencies = _hnd; return *this; }
TestMemPoolEntryHelper &SpendsCoinbase(bool _flag) { spendsCoinbase = _flag; return *this; }
TestMemPoolEntryHelper &SigOpsCost(unsigned int _sigopsCost) { sigOpCost = _sigopsCost; return *this; }
};
diff --git a/src/txmempool.cpp b/src/txmempool.cpp
index 4ccbcadefc..4f4540a1fc 100644
--- a/src/txmempool.cpp
+++ b/src/txmempool.cpp
@@ -22,10 +22,10 @@ using namespace std;
CTxMemPoolEntry::CTxMemPoolEntry(const CTransactionRef& _tx, const CAmount& _nFee,
int64_t _nTime, double _entryPriority, unsigned int _entryHeight,
- bool poolHasNoInputsOf, CAmount _inChainInputValue,
+ CAmount _inChainInputValue,
bool _spendsCoinbase, int64_t _sigOpsCost, LockPoints lp):
tx(_tx), nFee(_nFee), nTime(_nTime), entryPriority(_entryPriority), entryHeight(_entryHeight),
- hadNoDependencies(poolHasNoInputsOf), inChainInputValue(_inChainInputValue),
+ inChainInputValue(_inChainInputValue),
spendsCoinbase(_spendsCoinbase), sigOpCost(_sigOpsCost), lockPoints(lp)
{
nTxWeight = GetTransactionWeight(*tx);
@@ -392,7 +392,7 @@ void CTxMemPool::AddTransactionsUpdated(unsigned int n)
nTransactionsUpdated += n;
}
-bool CTxMemPool::addUnchecked(const uint256& hash, const CTxMemPoolEntry &entry, setEntries &setAncestors, bool fCurrentEstimate)
+bool CTxMemPool::addUnchecked(const uint256& hash, const CTxMemPoolEntry &entry, setEntries &setAncestors, bool validFeeEstimate)
{
// Add to memory pool without checking anything.
// Used by main.cpp AcceptToMemoryPool(), which DOES do
@@ -442,7 +442,7 @@ bool CTxMemPool::addUnchecked(const uint256& hash, const CTxMemPoolEntry &entry,
nTransactionsUpdated++;
totalTxSize += entry.GetTxSize();
- minerPolicyEstimator->processTransaction(entry, fCurrentEstimate);
+ minerPolicyEstimator->processTransaction(entry, validFeeEstimate);
vTxHashes.emplace_back(tx.GetWitnessHash(), newit);
newit->vTxHashesIdx = vTxHashes.size() - 1;
@@ -591,19 +591,20 @@ void CTxMemPool::removeConflicts(const CTransaction &tx)
/**
* Called when a block is connected. Removes from mempool and updates the miner fee estimator.
*/
-void CTxMemPool::removeForBlock(const std::vector<CTransactionRef>& vtx, unsigned int nBlockHeight,
- bool fCurrentEstimate)
+void CTxMemPool::removeForBlock(const std::vector<CTransactionRef>& vtx, unsigned int nBlockHeight)
{
LOCK(cs);
- std::vector<CTxMemPoolEntry> entries;
+ std::vector<const CTxMemPoolEntry*> entries;
for (const auto& tx : vtx)
{
uint256 hash = tx->GetHash();
indexed_transaction_set::iterator i = mapTx.find(hash);
if (i != mapTx.end())
- entries.push_back(*i);
+ entries.push_back(&*i);
}
+ // Before the txs in the new block have been removed from the mempool, update policy estimates
+ minerPolicyEstimator->processBlock(nBlockHeight, entries);
for (const auto& tx : vtx)
{
txiter it = mapTx.find(tx->GetHash());
@@ -615,8 +616,6 @@ void CTxMemPool::removeForBlock(const std::vector<CTransactionRef>& vtx, unsigne
removeConflicts(*tx);
ClearPrioritisation(tx->GetHash());
}
- // After the txs in the new block have been removed from the mempool, update policy estimates
- minerPolicyEstimator->processBlock(nBlockHeight, entries, fCurrentEstimate);
lastRollingFeeUpdate = GetTime();
blockSinceLastRollingFeeBump = true;
}
@@ -1015,14 +1014,14 @@ int CTxMemPool::Expire(int64_t time) {
return stage.size();
}
-bool CTxMemPool::addUnchecked(const uint256&hash, const CTxMemPoolEntry &entry, bool fCurrentEstimate)
+bool CTxMemPool::addUnchecked(const uint256&hash, const CTxMemPoolEntry &entry, bool validFeeEstimate)
{
LOCK(cs);
setEntries setAncestors;
uint64_t nNoLimit = std::numeric_limits<uint64_t>::max();
std::string dummy;
CalculateMemPoolAncestors(entry, setAncestors, nNoLimit, nNoLimit, nNoLimit, nNoLimit, dummy);
- return addUnchecked(hash, entry, setAncestors, fCurrentEstimate);
+ return addUnchecked(hash, entry, setAncestors, validFeeEstimate);
}
void CTxMemPool::UpdateChild(txiter entry, txiter child, bool add)
diff --git a/src/txmempool.h b/src/txmempool.h
index 3f8ab59504..6a00b540a5 100644
--- a/src/txmempool.h
+++ b/src/txmempool.h
@@ -88,7 +88,6 @@ private:
int64_t nTime; //!< Local time when entering the mempool
double entryPriority; //!< Priority when entering the mempool
unsigned int entryHeight; //!< Chain height when entering the mempool
- bool hadNoDependencies; //!< Not dependent on any other txs when it entered the mempool
CAmount inChainInputValue; //!< Sum of all txin values that are already in blockchain
bool spendsCoinbase; //!< keep track of transactions that spend a coinbase
int64_t sigOpCost; //!< Total sigop cost
@@ -113,7 +112,7 @@ private:
public:
CTxMemPoolEntry(const CTransactionRef& _tx, const CAmount& _nFee,
int64_t _nTime, double _entryPriority, unsigned int _entryHeight,
- bool poolHasNoInputsOf, CAmount _inChainInputValue, bool spendsCoinbase,
+ CAmount _inChainInputValue, bool spendsCoinbase,
int64_t nSigOpsCost, LockPoints lp);
CTxMemPoolEntry(const CTxMemPoolEntry& other);
@@ -130,7 +129,6 @@ public:
size_t GetTxWeight() const { return nTxWeight; }
int64_t GetTime() const { return nTime; }
unsigned int GetHeight() const { return entryHeight; }
- bool WasClearAtEntry() const { return hadNoDependencies; }
int64_t GetSigOpCost() const { return sigOpCost; }
int64_t GetModifiedFee() const { return nFee + feeDelta; }
size_t DynamicMemoryUsage() const { return nUsageSize; }
@@ -525,14 +523,13 @@ public:
// to track size/count of descendant transactions. First version of
// addUnchecked can be used to have it call CalculateMemPoolAncestors(), and
// then invoke the second version.
- bool addUnchecked(const uint256& hash, const CTxMemPoolEntry &entry, bool fCurrentEstimate = true);
- bool addUnchecked(const uint256& hash, const CTxMemPoolEntry &entry, setEntries &setAncestors, bool fCurrentEstimate = true);
+ bool addUnchecked(const uint256& hash, const CTxMemPoolEntry &entry, bool validFeeEstimate = true);
+ bool addUnchecked(const uint256& hash, const CTxMemPoolEntry &entry, setEntries &setAncestors, bool validFeeEstimate = true);
void removeRecursive(const CTransaction &tx);
void removeForReorg(const CCoinsViewCache *pcoins, unsigned int nMemPoolHeight, int flags);
void removeConflicts(const CTransaction &tx);
- void removeForBlock(const std::vector<CTransactionRef>& vtx, unsigned int nBlockHeight,
- bool fCurrentEstimate = true);
+ void removeForBlock(const std::vector<CTransactionRef>& vtx, unsigned int nBlockHeight);
void clear();
void _clear(); //lock free
bool CompareDepthAndScore(const uint256& hasha, const uint256& hashb);
diff --git a/src/validation.cpp b/src/validation.cpp
index f5f6851128..648fed8bc6 100644
--- a/src/validation.cpp
+++ b/src/validation.cpp
@@ -525,6 +525,18 @@ std::string FormatStateMessage(const CValidationState &state)
state.GetRejectCode());
}
+static bool IsCurrentForFeeEstimation()
+{
+ AssertLockHeld(cs_main);
+ if (IsInitialBlockDownload())
+ return false;
+ if (chainActive.Tip()->GetBlockTime() < (GetTime() - MAX_FEE_ESTIMATION_TIP_AGE))
+ return false;
+ if (chainActive.Height() < pindexBestHeader->nHeight - 1)
+ return false;
+ return true;
+}
+
bool AcceptToMemoryPoolWorker(CTxMemPool& pool, CValidationState& state, const CTransactionRef& ptx, bool fLimitFree,
bool* pfMissingInputs, int64_t nAcceptTime, bool fOverrideMempoolLimit, const CAmount& nAbsurdFee,
std::vector<uint256>& vHashTxnToUncache)
@@ -692,7 +704,8 @@ bool AcceptToMemoryPoolWorker(CTxMemPool& pool, CValidationState& state, const C
}
}
- CTxMemPoolEntry entry(ptx, nFees, nAcceptTime, dPriority, chainActive.Height(), pool.HasNoInputsOf(tx), inChainInputValue, fSpendsCoinbase, nSigOpsCost, lp);
+ CTxMemPoolEntry entry(ptx, nFees, nAcceptTime, dPriority, chainActive.Height(),
+ inChainInputValue, fSpendsCoinbase, nSigOpsCost, lp);
unsigned int nSize = entry.GetTxSize();
// Check that the transaction doesn't have an excessive number of
@@ -940,8 +953,13 @@ bool AcceptToMemoryPoolWorker(CTxMemPool& pool, CValidationState& state, const C
}
pool.RemoveStaged(allConflicting, false);
+ // This transaction should only count for fee estimation if
+ // the node is not behind and it is not dependent on any other
+ // transactions in the mempool
+ bool validForFeeEstimation = IsCurrentForFeeEstimation() && pool.HasNoInputsOf(tx);
+
// Store transaction in memory
- pool.addUnchecked(hash, entry, setAncestors, !IsInitialBlockDownload());
+ pool.addUnchecked(hash, entry, setAncestors, validForFeeEstimation);
// trim mempool and check if tx was trimmed
if (!fOverrideMempoolLimit) {
@@ -2206,7 +2224,7 @@ bool static ConnectTip(CValidationState& state, const CChainParams& chainparams,
int64_t nTime5 = GetTimeMicros(); nTimeChainState += nTime5 - nTime4;
LogPrint("bench", " - Writing chainstate: %.2fms [%.2fs]\n", (nTime5 - nTime4) * 0.001, nTimeChainState * 0.000001);
// Remove conflicting transactions from the mempool.;
- mempool.removeForBlock(blockConnecting.vtx, pindexNew->nHeight, !IsInitialBlockDownload());
+ mempool.removeForBlock(blockConnecting.vtx, pindexNew->nHeight);
// Update chainActive & related variables.
UpdateTip(pindexNew, chainparams);
diff --git a/src/validation.h b/src/validation.h
index 97fc9df1ff..631602a701 100644
--- a/src/validation.h
+++ b/src/validation.h
@@ -130,6 +130,8 @@ static const int64_t BLOCK_DOWNLOAD_TIMEOUT_PER_PEER = 500000;
static const unsigned int DEFAULT_LIMITFREERELAY = 0;
static const bool DEFAULT_RELAYPRIORITY = true;
static const int64_t DEFAULT_MAX_TIP_AGE = 24 * 60 * 60;
+/** Maximum age of our tip in seconds for us to be considered current for fee estimation */
+static const int64_t MAX_FEE_ESTIMATION_TIP_AGE = 3 * 60 * 60;
/** Default for -permitbaremultisig */
static const bool DEFAULT_PERMIT_BAREMULTISIG = true;
diff --git a/src/wallet/wallet.cpp b/src/wallet/wallet.cpp
index 53b0310940..ff7a03bc55 100644
--- a/src/wallet/wallet.cpp
+++ b/src/wallet/wallet.cpp
@@ -2578,7 +2578,7 @@ bool CWallet::CreateTransaction(const vector<CRecipient>& vecSend, CWalletTx& wt
if (GetBoolArg("-walletrejectlongchains", DEFAULT_WALLET_REJECT_LONG_CHAINS)) {
// Lastly, ensure this tx will pass the mempool's chain limits
LockPoints lp;
- CTxMemPoolEntry entry(wtxNew.tx, 0, 0, 0, 0, false, 0, false, 0, lp);
+ CTxMemPoolEntry entry(wtxNew.tx, 0, 0, 0, 0, 0, false, 0, lp);
CTxMemPool::setEntries setAncestors;
size_t nLimitAncestors = GetArg("-limitancestorcount", DEFAULT_ANCESTOR_LIMIT);
size_t nLimitAncestorSize = GetArg("-limitancestorsize", DEFAULT_ANCESTOR_SIZE_LIMIT)*1000;