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Merge bitcoin/bitcoin#24941: test: MiniWallet: support skipping mempool checks (feature_fee_estimation.py performance fix)

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a498acce45 test: MiniWallet: skip mempool check if `mempool_valid=False` (Sebastian Falbesoner)
01552e8f67 test: MiniWallet: always rehash after signing (P2PK mode) (Sebastian Falbesoner)

Pull request description:

  MiniWallet's core method for creating txs (`create_self_transfer`) right now always executes the `testmempoolaccept` RPC to check for mempool validity or invalidity. In some test cases where we use MiniWallet to create a huge number of transactions this can lead to performance issues, in particular feature_fee_estimation.py where the execution time after MiniWallet usage (PR #24817) doubled, see https://github.com/bitcoin/bitcoin/issues/24828#issuecomment-1100058100, https://github.com/bitcoin/bitcoin/issues/24828#issuecomment-1100301980. This PR mitigates this by skipping the mempool check if the parameter `mempool_valid` is set to `False`.

  As a preparatory commit, the test feature_csv_activation.py has to be adapted w.r.t. to rehashing of transactions, as we now hash all transactions immediately in `create_self_transfer` in order to get the txid (before we relied on the result of `testmempoolaccept`).

  On my machine, this decreases the execution time quite noticably:

  master branch:
  ```
  $ time ./test/functional/feature_fee_estimation.py
  real    3m20.771s
  user    2m52.360s
  sys     0m39.340s
  ```

  PR branch:
  ```
  $ time ./test/functional/feature_fee_estimation.py
  real    2m1.386s
  user    1m42.510s
  sys     0m22.980s
  ```

  Partly fixes #24828 (hopefully).

ACKs for top commit:
  danielabrozzoni:
    tACK a498acce45

Tree-SHA512: f20c358ba42b2ded86175f46ff3ff9eaefb84175cbd1c2624f44904c8d8888e67ce64d6dcbb26aabbf07906e6f5bdea40353eba9ae668618cadcfc517ef7201b
This commit is contained in:
MacroFake
2022-05-03 09:59:42 +02:00
parent 2c56404088 a498acce45
commit d24318a40c
2 changed files with 9 additions and 10 deletions
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11
test/functional/test_framework/wallet.py
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@@ -127,6 +127,7 @@ class MiniWallet:
if not fixed_length:
break
tx.vin[0].scriptSig = CScript([der_sig + bytes(bytearray([SIGHASH_ALL]))])
tx.rehash()
def generate(self, num_blocks, **kwargs):
"""Generate blocks with coinbase outputs to the internal address, and append the outputs to the internal list"""
@@ -233,7 +234,8 @@ class MiniWallet:
return tx
def create_self_transfer(self, *, fee_rate=Decimal("0.003"), from_node=None, utxo_to_spend=None, mempool_valid=True, locktime=0, sequence=0):
"""Create and return a tx with the specified fee_rate. Fee may be exact or at most one satoshi higher than needed."""
"""Create and return a tx with the specified fee_rate. Fee may be exact or at most one satoshi higher than needed.
Checking mempool validity via the testmempoolaccept RPC can be skipped by setting mempool_valid to False."""
from_node = from_node or self._test_node
utxo_to_spend = utxo_to_spend or self.get_utxo()
if self._priv_key is None:
@@ -260,12 +262,13 @@ class MiniWallet:
tx.wit.vtxinwit[0].scriptWitness.stack = [CScript([OP_TRUE]), bytes([LEAF_VERSION_TAPSCRIPT]) + self._internal_key]
tx_hex = tx.serialize().hex()
tx_info = from_node.testmempoolaccept([tx_hex])[0]
assert_equal(mempool_valid, tx_info['allowed'])
if mempool_valid:
tx_info = from_node.testmempoolaccept([tx_hex])[0]
assert_equal(tx_info['allowed'], True)
assert_equal(tx_info['vsize'], vsize)
assert_equal(tx_info['fees']['base'], utxo_to_spend['value'] - Decimal(send_value) / COIN)
return {'txid': tx_info['txid'], 'wtxid': tx_info['wtxid'], 'hex': tx_hex, 'tx': tx}
return {'txid': tx.rehash(), 'wtxid': tx.getwtxid(), 'hex': tx_hex, 'tx': tx}
def sendrawtransaction(self, *, from_node, tx_hex, **kwargs):
txid = from_node.sendrawtransaction(hexstring=tx_hex, **kwargs)