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Benchmark BnB in the worst case where it exhausts

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This commit is contained in:
Andrew Chow 2018-03-06 14:24:15 -05:00
parent 6a34ff5335
commit 76d2f068a4
1 changed files with 44 additions and 0 deletions
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44
src/bench/coin_selection.cpp
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@ -4,6 +4,7 @@
#include <bench/bench.h>
#include <wallet/wallet.h>
#include <wallet/coinselection.h>
#include <set>
@ -61,4 +62,47 @@ static void CoinSelection(benchmark::State& state)
}
}
typedef std::set<CInputCoin> CoinSet;
// Copied from src/wallet/test/coinselector_tests.cpp
static void add_coin(const CAmount& nValue, int nInput, std::vector<CInputCoin>& set)
{
CMutableTransaction tx;
tx.vout.resize(nInput + 1);
tx.vout[nInput].nValue = nValue;
set.emplace_back(MakeTransactionRef(tx), nInput);
}
// Copied from src/wallet/test/coinselector_tests.cpp
static CAmount make_hard_case(int utxos, std::vector<CInputCoin>& utxo_pool)
{
utxo_pool.clear();
CAmount target = 0;
for (int i = 0; i < utxos; ++i) {
target += (CAmount)1 << (utxos+i);
add_coin((CAmount)1 << (utxos+i), 2*i, utxo_pool);
add_coin(((CAmount)1 << (utxos+i)) + ((CAmount)1 << (utxos-1-i)), 2*i + 1, utxo_pool);
}
return target;
}
static void BnBExhaustion(benchmark::State& state)
{
// Setup
std::vector<CInputCoin> utxo_pool;
CoinSet selection;
CAmount value_ret = 0;
CAmount not_input_fees = 0;
while (state.KeepRunning()) {
// Benchmark
CAmount target = make_hard_case(17, utxo_pool);
SelectCoinsBnB(utxo_pool, target, 0, selection, value_ret, not_input_fees); // Should exhaust
// Cleanup
utxo_pool.clear();
selection.clear();
}
}
BENCHMARK(CoinSelection, 650);
BENCHMARK(BnBExhaustion, 650);