1.remove the unnecessary NewTxsEvent subscriber, which was used for PoW resubmit check.
2.unsubscribe ASAP before another fillTransactions, to avoid block others.
* worker: add double sign check for safety.
And for corner cases, such as reorg after reorg...
use slice to record all broadcast blocks's parents to avoid overwritten.
When new block is imported, there is no need to commit the current
work, even the new imported block is offturn and itself is inturn.
That is because when offturn block is received, the inturn block is
already later to broadcast block, deliver the later block will cause
many reorg, which is not reasonable.
And also make sure all useless work can be discarded, to avoid goroutine leak.
It may not efficient if schedule fillTransactions when new transactions arrive.
It could make the CPU keep running.
To make is more efficient:
1.schedule fillTransactions when a certain amount of transaction are arrived.
2.or there is not much time left.
Currently, validator only try once to get transactions from TxPool to produce the block.
However, new transactions could arrive while the validator is committing transaction.
Validator should be allowed to add these new arrived transactions as long as
Header.Timestamp is not reached
This commit will:
** commitTransactions return with error code
** drop current mining block on new block imported
** try fillTransactions several times for the best
not use append mode to follow the GasPrice rule.
** check if there is enough time for another fillTransactions.
`fillTransactions` will call `commitTransactions` twice, if the delay
timer is expired during the first call, it will make the delay timer
never be triggered in the second commitTransactions call.
Pseudo code:
x := time.NewTimer(time.Second)
<-x.C
fmt.Println("read delay 1")
<-x.C
fmt.Println("read delay 2") // will never hit
pre-seal empty block is for PoW to deliver an empty block ASAP to
gain the block mine reward.
It is useless for PoS consensus and it does not work for BSC either.
Delete the code to make worker simpler.
It could be a very old PoW logic, which try to add more transaction
into the pending block when mining is stopped.
Mining can be stopped when:
1.download started.
2.manually stopped by RPC.
It is unnecessary to add more transaction into the pending block if a validator is stopped.
And updateSnapshot() is not needed as well, it is to get the pending mining snapshot.
Right now, DelayLeftOver is used to reserve time for block finalize, not block
broadcast. And the code does not work as expected.
The general block generation could be described as:
|- fillTransactions -|- finalize a block -|- wait until the period(3s) reached -|- broadcast -|
resubmit intervalAdjust is for PoW only, to remove it to make worker simpler.
With PoW, there will be a periodic timer to check if it is the time to stop
packing transaction and start calculating the desired hash value, since other miner
could succeed in hash compute if it spends too much time packing transactions.
It will commit the current fruit to calculate root at a reasonable time.
And it will schedule a new work to get a big block if new transaction was received.
When there are too many transactions in the TxPool, the interval of the resubmit timer would be
increased and vice versa.
But it is not needed with PoS related consensus, since the block interval is determined in PoS,
and there is already a timer to stop too long packing.
* feature: do trie prefetch on state prefetch
Currently, state prefetch just pre execute the transactions and discard the results.
It is helpful to increase the snapshot cache hit rate.
It would be more helpful, if it can do trie prefetch at the same time, since the it will
preload the trie node and build the trie tree in advance.
This patch is to implement it, by reusing the main trie prefetch and doing finalize after
transaction is executed.
* some code improvements for trie prefetch
** increase pendingSize before dispatch tasks
** use throwaway StateDB for TriePrefetchInAdvance and remove the prefetcherLock
** remove the necessary drain operation in trie prefetch mainloop,
trie prefetcher won't be used after close.
* eth, miner: remove duplicated code
* eth/catalyst: remove unneeded code
* miner: keep update pending state even the Merge is happened
* eth, miner: rebase
* miner: fix tests
* eth, miner: address comments from marius
* miner: use empty zero randomness for pending blocks after the merge
* eth/catalyst: gofmt
* miner: add warning log for state recovery
* miner: ignore uncles for post-merge blocks
Co-authored-by: Péter Szilágyi <peterke@gmail.com>
* all: work for eth1/2 transtition
* consensus/beacon, eth: change beacon difficulty to 0
* eth: updates
* all: add terminalBlockDifficulty config, fix rebasing issues
* eth: implemented merge interop spec
* internal/ethapi: update to v1.0.0.alpha.2
This commit updates the code to the new spec, moving payloadId into
it's own object. It also fixes an issue with finalizing an empty blockhash.
It also properly sets the basefee
* all: sync polishes, other fixes + refactors
* core, eth: correct semantics for LeavePoW, EnterPoS
* core: fixed rebasing artifacts
* core: light: performance improvements
* core: use keyed field (f)
* core: eth: fix compilation issues + tests
* eth/catalyst: dbetter error codes
* all: move Merger to consensus/, remove reliance on it in bc
* all: renamed EnterPoS and LeavePoW to ReachTDD and FinalizePoS
* core: make mergelogs a function
* core: use InsertChain instead of InsertBlock
* les: drop merger from lightchain object
* consensus: add merger
* core: recoverAncestors in catalyst mode
* core: fix nitpick
* all: removed merger from beacon, use TTD, nitpicks
* consensus: eth: add docstring, removed unnecessary code duplication
* consensus/beacon: better comment
* all: easy to fix nitpicks by karalabe
* consensus/beacon: verify known headers to be sure
* core: comments
* core: eth: don't drop peers who advertise blocks, nitpicks
* core: never add beacon blocks to the future queue
* core: fixed nitpicks
* consensus/beacon: simplify IsTTDReached check
* consensus/beacon: correct IsTTDReached check
Co-authored-by: rjl493456442 <garyrong0905@gmail.com>
Co-authored-by: Péter Szilágyi <peterke@gmail.com>
* cmd, core: add flag --dev.gaslimit to allow configuring initial block gas limit in dev mode
* core: use provided gaslimit
Co-authored-by: Martin Holst Swende <martin@swende.se>
This PR fixes a problem which arises on clique networks when there is a network stall. Previously, the worker packages were tracked, even if the sealing engine decided not to seal the block (due to clique rules about recent signing). These tracked-but-not-sealed blocks kept building up in memory.
This PR changes the situation so the sealing engine instead returns an error, and the worker can thus un-track the package.
node.Node no longer registers any account manager backends by default,
they need to be registered explicitly.
For ethash-based tests, we actually don't need any accounts in the miner
keystore. Just set the etherbase instead to make mining work. For
clique, the signer account must be in the keystore.
The change also adds interrupt handling in stress tests.
This fixes a data race on worker.current by moving the call to StopPrefetcher
into the main loop.
The commit also contains fixes for two other races in unit tests of unrelated packages.
