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Merge pull request #1022 from obscuren/parallel_nonce_checks 

Parallelise nonce checks
This commit is contained in:
Jeffrey Wilcke 2015-05-18 11:13:53 -07:00
parent d6adadc5e3 40717465bc
commit bd0c0a633b
9 changed files with 119 additions and 25 deletions
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2
cmd/geth/js_test.go
View File

@ -172,6 +172,8 @@ func TestBlockChain(t *testing.T) {
tmpfile := filepath.Join(extmp, "export.chain")
tmpfileq := strconv.Quote(tmpfile)
ethereum.ChainManager().Reset()
checkEvalJSON(t, repl, `admin.export(`+tmpfileq+`)`, `true`)
if _, err := os.Stat(tmpfile); err != nil {
t.Fatal(err)

2
cmd/utils/flags.go
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@ -336,8 +336,8 @@ func GetChain(ctx *cli.Context) (*core.ChainManager, common.Database, common.Dat
}
eventMux := new(event.TypeMux)
chainManager := core.NewChainManager(blockDb, stateDb, eventMux)
pow := ethash.New()
chainManager := core.NewChainManager(blockDb, stateDb, pow, eventMux)
txPool := core.NewTxPool(eventMux, chainManager.State, chainManager.GasLimit)
blockProcessor := core.NewBlockProcessor(stateDb, extraDb, pow, txPool, chainManager, eventMux)
chainManager.SetProcessor(blockProcessor)

14
core/block_processor.go
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@ -188,7 +188,7 @@ func (sm *BlockProcessor) processWithParent(block, parent *types.Block) (logs st
state := state.New(parent.Root(), sm.db)
// Block validation
if err = sm.ValidateHeader(block.Header(), parent.Header()); err != nil {
if err = sm.ValidateHeader(block.Header(), parent.Header(), false); err != nil {
return
}
@ -268,7 +268,7 @@ func (sm *BlockProcessor) processWithParent(block, parent *types.Block) (logs st
// Validates the current block. Returns an error if the block was invalid,
// an uncle or anything that isn't on the current block chain.
// Validation validates easy over difficult (dagger takes longer time = difficult)
func (sm *BlockProcessor) ValidateHeader(block, parent *types.Header) error {
func (sm *BlockProcessor) ValidateHeader(block, parent *types.Header, checkPow bool) error {
if big.NewInt(int64(len(block.Extra))).Cmp(params.MaximumExtraDataSize) == 1 {
return fmt.Errorf("Block extra data too long (%d)", len(block.Extra))
}
@ -299,9 +299,11 @@ func (sm *BlockProcessor) ValidateHeader(block, parent *types.Header) error {
return BlockEqualTSErr //ValidationError("Block timestamp equal or less than previous block (%v - %v)", block.Time, parent.Time)
}
// Verify the nonce of the block. Return an error if it's not valid
if !sm.Pow.Verify(types.NewBlockWithHeader(block)) {
return ValidationError("Block's nonce is invalid (= %x)", block.Nonce)
if checkPow {
// Verify the nonce of the block. Return an error if it's not valid
if !sm.Pow.Verify(types.NewBlockWithHeader(block)) {
return ValidationError("Block's nonce is invalid (= %x)", block.Nonce)
}
}
return nil
@ -375,7 +377,7 @@ func (sm *BlockProcessor) VerifyUncles(statedb *state.StateDB, block, parent *ty
return UncleError("uncle[%d](%x)'s parent unknown (%x)", i, hash[:4], uncle.ParentHash[0:4])
}
if err := sm.ValidateHeader(uncle, ancestorHeaders[uncle.ParentHash]); err != nil {
if err := sm.ValidateHeader(uncle, ancestorHeaders[uncle.ParentHash], true); err != nil {
return ValidationError(fmt.Sprintf("uncle[%d](%x) header invalid: %v", i, hash[:4], err))
}
}

6
core/block_processor_test.go
View File

@ -14,7 +14,7 @@ func proc() (*BlockProcessor, *ChainManager) {
db, _ := ethdb.NewMemDatabase()
var mux event.TypeMux
chainMan := NewChainManager(db, db, &mux)
chainMan := NewChainManager(db, db, thePow(), &mux)
return NewBlockProcessor(db, db, ezp.New(), nil, chainMan, &mux), chainMan
}
@ -24,13 +24,13 @@ func TestNumber(t *testing.T) {
block1.Header().Number = big.NewInt(3)
block1.Header().Time--
err := bp.ValidateHeader(block1.Header(), chain.Genesis().Header())
err := bp.ValidateHeader(block1.Header(), chain.Genesis().Header(), false)
if err != BlockNumberErr {
t.Errorf("expected block number error %v", err)
}
block1 = chain.NewBlock(common.Address{})
err = bp.ValidateHeader(block1.Header(), chain.Genesis().Header())
err = bp.ValidateHeader(block1.Header(), chain.Genesis().Header(), false)
if err == BlockNumberErr {
t.Errorf("didn't expect block number error")
}

2
core/chain_makers.go
View File

@ -109,7 +109,7 @@ func makeChain(bman *BlockProcessor, parent *types.Block, max int, db common.Dat
// Effectively a fork factory
func newChainManager(block *types.Block, eventMux *event.TypeMux, db common.Database) *ChainManager {
genesis := GenesisBlock(db)
bc := &ChainManager{blockDb: db, stateDb: db, genesisBlock: genesis, eventMux: eventMux}
bc := &ChainManager{blockDb: db, stateDb: db, genesisBlock: genesis, eventMux: eventMux, pow: FakePow{}}
bc.txState = state.ManageState(state.New(genesis.Root(), db))
bc.futureBlocks = NewBlockCache(1000)
if block == nil {

91
core/chain_manager.go
View File

@ -5,6 +5,7 @@ import (
"fmt"
"io"
"math/big"
"runtime"
"sync"
"time"
@ -15,6 +16,7 @@ import (
"github.com/ethereum/go-ethereum/logger"
"github.com/ethereum/go-ethereum/logger/glog"
"github.com/ethereum/go-ethereum/params"
"github.com/ethereum/go-ethereum/pow"
"github.com/ethereum/go-ethereum/rlp"
)
@ -100,9 +102,11 @@ type ChainManager struct {
quit chan struct{}
wg sync.WaitGroup
pow pow.PoW
}
func NewChainManager(blockDb, stateDb common.Database, mux *event.TypeMux) *ChainManager {
func NewChainManager(blockDb, stateDb common.Database, pow pow.PoW, mux *event.TypeMux) *ChainManager {
bc := &ChainManager{
blockDb: blockDb,
stateDb: stateDb,
@ -110,6 +114,7 @@ func NewChainManager(blockDb, stateDb common.Database, mux *event.TypeMux) *Chai
eventMux: mux,
quit: make(chan struct{}),
cache: NewBlockCache(blockCacheLimit),
pow: pow,
}
bc.setLastState()
@ -343,7 +348,7 @@ func (self *ChainManager) Export(w io.Writer) error {
last := self.currentBlock.NumberU64()
for nr := uint64(0); nr <= last; nr++ {
for nr := uint64(1); nr <= last; nr++ {
block := self.GetBlockByNumber(nr)
if block == nil {
return fmt.Errorf("export failed on #%d: not found", nr)
@ -529,10 +534,19 @@ func (self *ChainManager) InsertChain(chain types.Blocks) (int, error) {
stats struct{ queued, processed, ignored int }
tstart = time.Now()
)
// check the nonce in parallel to the block processing
// this speeds catching up significantly
nonceErrCh := make(chan error)
go func() {
nonceErrCh <- verifyNonces(self.pow, chain)
}()
for i, block := range chain {
if block == nil {
continue
}
// Setting block.Td regardless of error (known for example) prevents errors down the line
// in the protocol handler
block.Td = new(big.Int).Set(CalcTD(block, self.GetBlock(block.ParentHash())))
@ -562,11 +576,7 @@ func (self *ChainManager) InsertChain(chain types.Blocks) (int, error) {
continue
}
h := block.Header()
glog.V(logger.Error).Infof("INVALID block #%v (%x)\n", h.Number, h.Hash().Bytes())
glog.V(logger.Error).Infoln(err)
glog.V(logger.Debug).Infoln(block)
blockErr(block, err)
return i, err
}
@ -620,6 +630,13 @@ func (self *ChainManager) InsertChain(chain types.Blocks) (int, error) {
}
// check and wait for the nonce error channel and
// make sure no nonce error was thrown in the process
err := <-nonceErrCh
if err != nil {
return 0, err
}
if (stats.queued > 0 || stats.processed > 0 || stats.ignored > 0) && bool(glog.V(logger.Info)) {
tend := time.Since(tstart)
start, end := chain[0], chain[len(chain)-1]
@ -718,3 +735,63 @@ out:
}
}
}
func blockErr(block *types.Block, err error) {
h := block.Header()
glog.V(logger.Error).Infof("INVALID block #%v (%x)\n", h.Number, h.Hash().Bytes())
glog.V(logger.Error).Infoln(err)
glog.V(logger.Debug).Infoln(block)
}
// verifyNonces verifies nonces of the given blocks in parallel and returns
// an error if one of the blocks nonce verifications failed.
func verifyNonces(pow pow.PoW, blocks []*types.Block) error {
// Spawn a few workers. They listen for blocks on the in channel
// and send results on done. The workers will exit in the
// background when in is closed.
var (
in = make(chan *types.Block)
done = make(chan error, runtime.GOMAXPROCS(0))
)
defer close(in)
for i := 0; i < cap(done); i++ {
go verifyNonce(pow, in, done)
}
// Feed blocks to the workers, aborting at the first invalid nonce.
var (
running, i int
block *types.Block
sendin = in
)
for i < len(blocks) || running > 0 {
if i == len(blocks) {
// Disable sending to in.
sendin = nil
} else {
block = blocks[i]
i++
}
select {
case sendin <- block:
running++
case err := <-done:
running--
if err != nil {
return err
}
}
}
return nil
}
// verifyNonce is a worker for the verifyNonces method. It will run until
// in is closed.
func verifyNonce(pow pow.PoW, in <-chan *types.Block, done chan<- error) {
for block := range in {
if !pow.Verify(block) {
done <- ValidationError("Block(#%v) nonce is invalid (= %x)", block.Number(), block.Nonce)
} else {
done <- nil
}
}
}

15
core/chain_manager_test.go
View File

@ -9,11 +9,13 @@ import (
"strconv"
"testing"
"github.com/ethereum/ethash"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/core/state"
"github.com/ethereum/go-ethereum/core/types"
"github.com/ethereum/go-ethereum/ethdb"
"github.com/ethereum/go-ethereum/event"
"github.com/ethereum/go-ethereum/pow"
"github.com/ethereum/go-ethereum/rlp"
)
@ -21,6 +23,11 @@ func init() {
runtime.GOMAXPROCS(runtime.NumCPU())
}
func thePow() pow.PoW {
pow, _ := ethash.NewForTesting()
return pow
}
// Test fork of length N starting from block i
func testFork(t *testing.T, bman *BlockProcessor, i, N int, f func(td1, td2 *big.Int)) {
// switch databases to process the new chain
@ -259,7 +266,7 @@ func TestChainInsertions(t *testing.T) {
}
var eventMux event.TypeMux
chainMan := NewChainManager(db, db, &eventMux)
chainMan := NewChainManager(db, db, thePow(), &eventMux)
txPool := NewTxPool(&eventMux, chainMan.State, func() *big.Int { return big.NewInt(100000000) })
blockMan := NewBlockProcessor(db, db, nil, txPool, chainMan, &eventMux)
chainMan.SetProcessor(blockMan)
@ -305,7 +312,7 @@ func TestChainMultipleInsertions(t *testing.T) {
}
}
var eventMux event.TypeMux
chainMan := NewChainManager(db, db, &eventMux)
chainMan := NewChainManager(db, db, thePow(), &eventMux)
txPool := NewTxPool(&eventMux, chainMan.State, func() *big.Int { return big.NewInt(100000000) })
blockMan := NewBlockProcessor(db, db, nil, txPool, chainMan, &eventMux)
chainMan.SetProcessor(blockMan)
@ -334,7 +341,7 @@ func TestGetAncestors(t *testing.T) {
db, _ := ethdb.NewMemDatabase()
var eventMux event.TypeMux
chainMan := NewChainManager(db, db, &eventMux)
chainMan := NewChainManager(db, db, thePow(), &eventMux)
chain, err := loadChain("valid1", t)
if err != nil {
fmt.Println(err)
@ -372,7 +379,7 @@ func makeChainWithDiff(genesis *types.Block, d []int, seed byte) []*types.Block
func chm(genesis *types.Block, db common.Database) *ChainManager {
var eventMux event.TypeMux
bc := &ChainManager{blockDb: db, stateDb: db, genesisBlock: genesis, eventMux: &eventMux}
bc := &ChainManager{blockDb: db, stateDb: db, genesisBlock: genesis, eventMux: &eventMux, pow: FakePow{}}
bc.cache = NewBlockCache(100)
bc.futureBlocks = NewBlockCache(100)
bc.processor = bproc{}

4
eth/backend.go
View File

@ -266,9 +266,9 @@ func New(config *Config) (*Ethereum, error) {
MinerThreads: config.MinerThreads,
}
eth.chainManager = core.NewChainManager(blockDb, stateDb, eth.EventMux())
eth.downloader = downloader.New(eth.EventMux(), eth.chainManager.HasBlock, eth.chainManager.GetBlock)
eth.pow = ethash.New()
eth.chainManager = core.NewChainManager(blockDb, stateDb, eth.pow, eth.EventMux())
eth.downloader = downloader.New(eth.EventMux(), eth.chainManager.HasBlock, eth.chainManager.GetBlock)
eth.txPool = core.NewTxPool(eth.EventMux(), eth.chainManager.State, eth.chainManager.GasLimit)
eth.blockProcessor = core.NewBlockProcessor(stateDb, extraDb, eth.pow, eth.txPool, eth.chainManager, eth.EventMux())
eth.chainManager.SetProcessor(eth.blockProcessor)

8
miner/worker.go
View File

@ -224,7 +224,13 @@ func (self *worker) wait() {
}
self.mux.Post(core.NewMinedBlockEvent{block})
glog.V(logger.Info).Infof("🔨 Mined block #%v", block.Number())
var stale string
canonBlock := self.chain.GetBlockByNumber(block.NumberU64())
if canonBlock != nil && canonBlock.Hash() != block.Hash() {
stale = "stale-"
}
glog.V(logger.Info).Infof("🔨 Mined %sblock #%v (%x)", stale, block.Number(), block.Hash().Bytes()[:4])
jsonlogger.LogJson(&logger.EthMinerNewBlock{
BlockHash: block.Hash().Hex(),