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Merge bitcoin/bitcoin#26695: bench: BlockAssembler on a mempool with packages

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04528054fc [bench] BlockAssembler with mempool packages (glozow)
6ce265acf4 [test util] lock cs_main before pool.cs in PopulateMempool (glozow)
8791410662 [test util] randomize fee in PopulateMempool (glozow)
cba5934eb6 [miner] allow bypassing TestBlockValidity (glozow)
c058852308 [refactor] parameterize BlockAssembler::Options in PrepareBlock (glozow)
a2de971ba1 [refactor] add helper to apply ArgsManager to BlockAssembler::Options (glozow)

Pull request description:

  Performance of block template building matters as miners likely want to be able to start mining on a block with transactions asap after a block is found. We would want to know if a mempool PR accidentally caused, for example, a 100x slowdown. An `AssembleBlock()` bench exists, but it operates on a mempool with 101 transactions, each with 0 ancestors or descendants and with the same fee. Adding a bench with a more complex mempool is useful because (1) it's more realistic (2) updating packages can potentially cause the algorithm to take a long time.

ACKs for top commit:
  kevkevinpal:
    Tested ACK [0452805](04528054fc)
  achow101:
    ACK 04528054fc
  stickies-v:
    ACK 04528054f

Tree-SHA512: 38c138d6a75616651f9b1faf4e3a1cd833437a486f4e84308fbee958e8462bb570582c88f7ba7ab99d80191e97855ac2cf27c43cc21585d3e4b0e227effe2fb5
This commit is contained in:
Andrew Chow
2023-01-11 18:02:59 -05:00
parent 908212506d 04528054fc
commit 2f6a8e5e02
6 changed files with 54 additions and 13 deletions
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17
src/node/miner.cpp
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@@ -60,10 +60,12 @@ BlockAssembler::Options::Options()
{
blockMinFeeRate = CFeeRate(DEFAULT_BLOCK_MIN_TX_FEE);
nBlockMaxWeight = DEFAULT_BLOCK_MAX_WEIGHT;
test_block_validity = true;
}
BlockAssembler::BlockAssembler(Chainstate& chainstate, const CTxMemPool* mempool, const Options& options)
: chainparams{chainstate.m_chainman.GetParams()},
: test_block_validity{options.test_block_validity},
chainparams{chainstate.m_chainman.GetParams()},
m_mempool(mempool),
m_chainstate(chainstate)
{
@@ -72,11 +74,10 @@ BlockAssembler::BlockAssembler(Chainstate& chainstate, const CTxMemPool* mempool
nBlockMaxWeight = std::max<size_t>(4000, std::min<size_t>(MAX_BLOCK_WEIGHT - 4000, options.nBlockMaxWeight));
}
static BlockAssembler::Options DefaultOptions()
void ApplyArgsManOptions(const ArgsManager& gArgs, BlockAssembler::Options& options)
{
// Block resource limits
// If -blockmaxweight is not given, limit to DEFAULT_BLOCK_MAX_WEIGHT
BlockAssembler::Options options;
options.nBlockMaxWeight = gArgs.GetIntArg("-blockmaxweight", DEFAULT_BLOCK_MAX_WEIGHT);
if (gArgs.IsArgSet("-blockmintxfee")) {
std::optional<CAmount> parsed = ParseMoney(gArgs.GetArg("-blockmintxfee", ""));
@@ -84,11 +85,16 @@ static BlockAssembler::Options DefaultOptions()
} else {
options.blockMinFeeRate = CFeeRate{DEFAULT_BLOCK_MIN_TX_FEE};
}
}
static BlockAssembler::Options ConfiguredOptions()
{
BlockAssembler::Options options;
ApplyArgsManOptions(gArgs, options);
return options;
}
BlockAssembler::BlockAssembler(Chainstate& chainstate, const CTxMemPool* mempool)
: BlockAssembler(chainstate, mempool, DefaultOptions()) {}
: BlockAssembler(chainstate, mempool, ConfiguredOptions()) {}
void BlockAssembler::resetBlock()
{
@@ -170,7 +176,8 @@ std::unique_ptr<CBlockTemplate> BlockAssembler::CreateNewBlock(const CScript& sc
pblocktemplate->vTxSigOpsCost[0] = WITNESS_SCALE_FACTOR * GetLegacySigOpCount(*pblock->vtx[0]);
BlockValidationState state;
if (!TestBlockValidity(state, chainparams, m_chainstate, *pblock, pindexPrev, GetAdjustedTime, false, false)) {
if (test_block_validity && !TestBlockValidity(state, chainparams, m_chainstate, *pblock, pindexPrev,
GetAdjustedTime, /*fCheckPOW=*/false, /*fCheckMerkleRoot=*/false)) {
throw std::runtime_error(strprintf("%s: TestBlockValidity failed: %s", __func__, state.ToString()));
}
const auto time_2{SteadyClock::now()};