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Merge pull request #16494 from karalabe/txpool-stable-pricedelete

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core: txpool stable underprice drop order, perf fixes
This commit is contained in:
Péter Szilágyi 2018-04-12 13:19:06 +03:00 committed by GitHub
commit 60516c83b0
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GPG Key ID: 4AEE18F83AFDEB23
3 changed files with 101 additions and 24 deletions
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17
core/tx_list.go
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@ -367,9 +367,20 @@ func (l *txList) Flatten() types.Transactions {
// price-sorted transactions to discard when the pool fills up.
type priceHeap []*types.Transaction
func (h priceHeap) Len() int { return len(h) }
func (h priceHeap) Less(i, j int) bool { return h[i].GasPrice().Cmp(h[j].GasPrice()) < 0 }
func (h priceHeap) Swap(i, j int) { h[i], h[j] = h[j], h[i] }
func (h priceHeap) Len() int { return len(h) }
func (h priceHeap) Swap(i, j int) { h[i], h[j] = h[j], h[i] }
func (h priceHeap) Less(i, j int) bool {
// Sort primarily by price, returning the cheaper one
switch h[i].GasPrice().Cmp(h[j].GasPrice()) {
case -1:
return true
case 1:
return false
}
// If the prices match, stabilize via nonces (high nonce is worse)
return h[i].Nonce() > h[j].Nonce()
}
func (h *priceHeap) Push(x interface{}) {
*h = append(*h, x.(*types.Transaction))

23
core/tx_pool.go
View File

@ -320,7 +320,7 @@ func (pool *TxPool) loop() {
// Any non-locals old enough should be removed
if time.Since(pool.beats[addr]) > pool.config.Lifetime {
for _, tx := range pool.queue[addr].Flatten() {
pool.removeTx(tx.Hash())
pool.removeTx(tx.Hash(), true)
}
}
}
@ -468,7 +468,7 @@ func (pool *TxPool) SetGasPrice(price *big.Int) {
pool.gasPrice = price
for _, tx := range pool.priced.Cap(price, pool.locals) {
pool.removeTx(tx.Hash())
pool.removeTx(tx.Hash(), false)
}
log.Info("Transaction pool price threshold updated", "price", price)
}
@ -630,7 +630,7 @@ func (pool *TxPool) add(tx *types.Transaction, local bool) (bool, error) {
for _, tx := range drop {
log.Trace("Discarding freshly underpriced transaction", "hash", tx.Hash(), "price", tx.GasPrice())
underpricedTxCounter.Inc(1)
pool.removeTx(tx.Hash())
pool.removeTx(tx.Hash(), false)
}
}
// If the transaction is replacing an already pending one, do directly
@ -695,8 +695,10 @@ func (pool *TxPool) enqueueTx(hash common.Hash, tx *types.Transaction) (bool, er
pool.priced.Removed()
queuedReplaceCounter.Inc(1)
}
pool.all[hash] = tx
pool.priced.Put(tx)
if pool.all[hash] == nil {
pool.all[hash] = tx
pool.priced.Put(tx)
}
return old != nil, nil
}
@ -862,7 +864,7 @@ func (pool *TxPool) Get(hash common.Hash) *types.Transaction {
// removeTx removes a single transaction from the queue, moving all subsequent
// transactions back to the future queue.
func (pool *TxPool) removeTx(hash common.Hash) {
func (pool *TxPool) removeTx(hash common.Hash, outofbound bool) {
// Fetch the transaction we wish to delete
tx, ok := pool.all[hash]
if !ok {
@ -872,8 +874,9 @@ func (pool *TxPool) removeTx(hash common.Hash) {
// Remove it from the list of known transactions
delete(pool.all, hash)
pool.priced.Removed()
if outofbound {
pool.priced.Removed()
}
// Remove the transaction from the pending lists and reset the account nonce
if pending := pool.pending[addr]; pending != nil {
if removed, invalids := pending.Remove(tx); removed {
@ -1052,7 +1055,7 @@ func (pool *TxPool) promoteExecutables(accounts []common.Address) {
// Drop all transactions if they are less than the overflow
if size := uint64(list.Len()); size <= drop {
for _, tx := range list.Flatten() {
pool.removeTx(tx.Hash())
pool.removeTx(tx.Hash(), true)
}
drop -= size
queuedRateLimitCounter.Inc(int64(size))
@ -1061,7 +1064,7 @@ func (pool *TxPool) promoteExecutables(accounts []common.Address) {
// Otherwise drop only last few transactions
txs := list.Flatten()
for i := len(txs) - 1; i >= 0 && drop > 0; i-- {
pool.removeTx(txs[i].Hash())
pool.removeTx(txs[i].Hash(), true)
drop--
queuedRateLimitCounter.Inc(1)
}

85
core/tx_pool_test.go
View File

@ -209,15 +209,10 @@ func TestStateChangeDuringTransactionPoolReset(t *testing.T) {
pool.lockedReset(nil, nil)
pendingTx, err := pool.Pending()
_, err := pool.Pending()
if err != nil {
t.Fatalf("Could not fetch pending transactions: %v", err)
}
for addr, txs := range pendingTx {
t.Logf("%0x: %d\n", addr, len(txs))
}
nonce = pool.State().GetNonce(address)
if nonce != 2 {
t.Fatalf("Invalid nonce, want 2, got %d", nonce)
@ -350,7 +345,7 @@ func TestTransactionChainFork(t *testing.T) {
if _, err := pool.add(tx, false); err != nil {
t.Error("didn't expect error", err)
}
pool.removeTx(tx.Hash())
pool.removeTx(tx.Hash(), true)
// reset the pool's internal state
resetState()
@ -1388,13 +1383,13 @@ func TestTransactionPoolUnderpricing(t *testing.T) {
t.Fatalf("adding underpriced pending transaction error mismatch: have %v, want %v", err, ErrUnderpriced)
}
// Ensure that adding high priced transactions drops cheap ones, but not own
if err := pool.AddRemote(pricedTransaction(0, 100000, big.NewInt(3), keys[1])); err != nil {
if err := pool.AddRemote(pricedTransaction(0, 100000, big.NewInt(3), keys[1])); err != nil { // +K1:0 => -K1:1 => Pend K0:0, K0:1, K1:0, K2:0; Que -
t.Fatalf("failed to add well priced transaction: %v", err)
}
if err := pool.AddRemote(pricedTransaction(2, 100000, big.NewInt(4), keys[1])); err != nil {
if err := pool.AddRemote(pricedTransaction(2, 100000, big.NewInt(4), keys[1])); err != nil { // +K1:2 => -K0:0 => Pend K1:0, K2:0; Que K0:1 K1:2
t.Fatalf("failed to add well priced transaction: %v", err)
}
if err := pool.AddRemote(pricedTransaction(3, 100000, big.NewInt(5), keys[1])); err != nil {
if err := pool.AddRemote(pricedTransaction(3, 100000, big.NewInt(5), keys[1])); err != nil { // +K1:3 => -K0:1 => Pend K1:0, K2:0; Que K1:2 K1:3
t.Fatalf("failed to add well priced transaction: %v", err)
}
pending, queued = pool.Stats()
@ -1404,7 +1399,7 @@ func TestTransactionPoolUnderpricing(t *testing.T) {
if queued != 2 {
t.Fatalf("queued transactions mismatched: have %d, want %d", queued, 2)
}
if err := validateEvents(events, 2); err != nil {
if err := validateEvents(events, 1); err != nil {
t.Fatalf("additional event firing failed: %v", err)
}
if err := validateTxPoolInternals(pool); err != nil {
@ -1430,6 +1425,74 @@ func TestTransactionPoolUnderpricing(t *testing.T) {
}
}
// Tests that more expensive transactions push out cheap ones from the pool, but
// without producing instability by creating gaps that start jumping transactions
// back and forth between queued/pending.
func TestTransactionPoolStableUnderpricing(t *testing.T) {
t.Parallel()
// Create the pool to test the pricing enforcement with
db, _ := ethdb.NewMemDatabase()
statedb, _ := state.New(common.Hash{}, state.NewDatabase(db))
blockchain := &testBlockChain{statedb, 1000000, new(event.Feed)}
config := testTxPoolConfig
config.GlobalSlots = 128
config.GlobalQueue = 0
pool := NewTxPool(config, params.TestChainConfig, blockchain)
defer pool.Stop()
// Keep track of transaction events to ensure all executables get announced
events := make(chan TxPreEvent, 32)
sub := pool.txFeed.Subscribe(events)
defer sub.Unsubscribe()
// Create a number of test accounts and fund them
keys := make([]*ecdsa.PrivateKey, 2)
for i := 0; i < len(keys); i++ {
keys[i], _ = crypto.GenerateKey()
pool.currentState.AddBalance(crypto.PubkeyToAddress(keys[i].PublicKey), big.NewInt(1000000))
}
// Fill up the entire queue with the same transaction price points
txs := types.Transactions{}
for i := uint64(0); i < config.GlobalSlots; i++ {
txs = append(txs, pricedTransaction(i, 100000, big.NewInt(1), keys[0]))
}
pool.AddRemotes(txs)
pending, queued := pool.Stats()
if pending != int(config.GlobalSlots) {
t.Fatalf("pending transactions mismatched: have %d, want %d", pending, config.GlobalSlots)
}
if queued != 0 {
t.Fatalf("queued transactions mismatched: have %d, want %d", queued, 0)
}
if err := validateEvents(events, int(config.GlobalSlots)); err != nil {
t.Fatalf("original event firing failed: %v", err)
}
if err := validateTxPoolInternals(pool); err != nil {
t.Fatalf("pool internal state corrupted: %v", err)
}
// Ensure that adding high priced transactions drops a cheap, but doesn't produce a gap
if err := pool.AddRemote(pricedTransaction(0, 100000, big.NewInt(3), keys[1])); err != nil {
t.Fatalf("failed to add well priced transaction: %v", err)
}
pending, queued = pool.Stats()
if pending != int(config.GlobalSlots) {
t.Fatalf("pending transactions mismatched: have %d, want %d", pending, config.GlobalSlots)
}
if queued != 0 {
t.Fatalf("queued transactions mismatched: have %d, want %d", queued, 0)
}
if err := validateEvents(events, 1); err != nil {
t.Fatalf("additional event firing failed: %v", err)
}
if err := validateTxPoolInternals(pool); err != nil {
t.Fatalf("pool internal state corrupted: %v", err)
}
}
// Tests that the pool rejects replacement transactions that don't meet the minimum
// price bump required.
func TestTransactionReplacement(t *testing.T) {