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Stable release v32.1bitcoin/bitcoin · f0de87f04062 ↗3,020 source files · 47.5 MB stored on the server440 file guides

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1// Copyright (c) The Bitcoin Core developers
2// Distributed under the MIT software license, see the accompanying
3// file COPYING or http://www.opensource.org/licenses/mit-license.php.
4
5#include <bench/bench.h>
6#include <random.h>
7#include <txgraph.h>
8#include <util/check.h>
9#include <util/feefrac.h>
10
11#include <algorithm>
12#include <cstddef>
13#include <cstdint>
14#include <memory>
15#include <utility>
16#include <vector>
17
18namespace {
19
20std::strong_ordering PointerComparator(const TxGraph::Ref& a, const TxGraph::Ref& b) noexcept
21{
22    return (&a) <=> (&b);
23}
24
25void BenchTxGraphTrim(benchmark::Bench& bench)
26{
27    // The from-block transactions consist of 1000 fully linear clusters, each with 64
28    // transactions. The mempool contains 11 transactions that together merge all of these into
29    // a single cluster.
30    //
31    // (1000 chains of 64 transactions, 64000 T's total)
32    //
33    //      T          T          T          T          T          T          T          T
34    //      |          |          |          |          |          |          |          |
35    //      T          T          T          T          T          T          T          T
36    //      |          |          |          |          |          |          |          |
37    //      T          T          T          T          T          T          T          T
38    //      |          |          |          |          |          |          |          |
39    //      T          T          T          T          T          T          T          T
40    //  (64 long)  (64 long)  (64 long)  (64 long)  (64 long)  (64 long)  (64 long)  (64 long)
41    //      |          |          |          |          |          |          |          |
42    //      |          |         / \         |         / \         |          |         /
43    //      \----------+--------/   \--------+--------/   \--------+-----+----+--------/
44    //                 |                     |                           |
45    //                 B                     B                           B
46    //
47    //  (11 B's, each attaching to up to 100 chains of 64 T's)
48    //
49    /** The maximum cluster count used in this test. */
50    static constexpr int MAX_CLUSTER_COUNT = 64;
51    /** The number of "top" (from-block) chains of transactions. */
52    static constexpr int NUM_TOP_CHAINS = 1000;
53    /** The number of transactions per top chain. */
54    static constexpr int NUM_TX_PER_TOP_CHAIN = MAX_CLUSTER_COUNT;
55    /** The (maximum) number of dependencies per bottom transaction. */
56    static constexpr int NUM_DEPS_PER_BOTTOM_TX = 100;
57    /** Set a very large cluster size limit so that only the count limit is triggered. */
58    static constexpr int32_t MAX_CLUSTER_SIZE = 100'000 * 100;
59    /** Set a very high number for acceptable cost, so that we certainly benchmark optimal
60     *  linearization. */
61    static constexpr uint64_t HIGH_ACCEPTABLE_COST = 100'000'000;
62
63    /** Refs to all top transactions. */
64    std::vector<TxGraph::Ref> top_refs;
65    /** Refs to all bottom transactions. */
66    std::vector<TxGraph::Ref> bottom_refs;
67    /** Indexes into top_refs for some transaction of each component, in arbitrary order.
68     *  Initially these are the last transactions in each chains, but as bottom transactions are
69     *  added, entries will be removed when they get merged, and randomized. */
70    std::vector<size_t> top_components;
71
72    InsecureRandomContext rng(11);
73    auto graph = MakeTxGraph(MAX_CLUSTER_COUNT, MAX_CLUSTER_SIZE, HIGH_ACCEPTABLE_COST, PointerComparator);
74
75    // Construct the top chains.
76    for (int chain = 0; chain < NUM_TOP_CHAINS; ++chain) {
77        for (int chaintx = 0; chaintx < NUM_TX_PER_TOP_CHAIN; ++chaintx) {
78            int64_t fee = rng.randbits<27>() + 100;
79            FeePerWeight feerate{fee, 1};
80            graph->AddTransaction(top_refs.emplace_back(), feerate);
81            // Add internal dependencies linking the chain transactions together.
82            if (chaintx > 0) {
83                 graph->AddDependency(*(top_refs.rbegin()), *(top_refs.rbegin() + 1));
84            }
85        }
86        // Remember the last transaction in each chain, to attach the bottom transactions to.
87        top_components.push_back(top_refs.size() - 1);
88    }
89
90    // Make the graph linearize all clusters acceptably.
91    graph->GetBlockBuilder();
92
93    // Construct the bottom transactions, and dependencies to the top chains.
94    while (top_components.size() > 1) {
95        // Construct the transaction.
96        int64_t fee = rng.randbits<27>() + 100;
97        FeePerWeight feerate{fee, 1};
98        TxGraph::Ref bottom_tx;
99        graph->AddTransaction(bottom_tx, feerate);
100        // Determine the number of dependencies this transaction will have.
101        int deps = std::min<int>(NUM_DEPS_PER_BOTTOM_TX, top_components.size());
102        for (int dep = 0; dep < deps; ++dep) {
103            // Pick an transaction in top_components to attach to.
104            auto idx = rng.randrange(top_components.size());
105            // Add dependency.
106            graph->AddDependency(/*parent=*/top_refs[top_components[idx]], /*child=*/bottom_tx);
107            // Unless this is the last dependency being added, remove from top_components, as
108            // the component will be merged with that one.
109            if (dep < deps - 1) {
110                // Move entry top the back.
111                if (idx != top_components.size() - 1) std::swap(top_components.back(), top_components[idx]);
112                // And pop it.
113                top_components.pop_back();
114            }
115        }
116        bottom_refs.push_back(std::move(bottom_tx));
117    }
118
119    // Run the benchmark exactly once. Running it multiple times would require the setup to be
120    // redone, which takes a very non-negligible time compared to the trimming itself.
121    bench.epochIterations(1).epochs(1).run([&] {
122        // Call Trim() to remove transactions and bring the cluster back within limits.
123        graph->Trim();
124        // And relinearize everything that remains acceptably.
125        graph->GetBlockBuilder();
126    });
127
128    assert(!graph->IsOversized(TxGraph::Level::TOP));
129    // At least 99% of chains must survive.
130    assert(graph->GetTransactionCount(TxGraph::Level::TOP) >= (NUM_TOP_CHAINS * NUM_TX_PER_TOP_CHAIN * 99) / 100);
131}
132
133} // namespace
134
135static void TxGraphTrim(benchmark::Bench& bench) { BenchTxGraphTrim(bench); }
136
137BENCHMARK(TxGraphTrim);
138

src/wallet/receive.cpp

src/wallet/coinselection.cpp

src/consensus/validation.h

src/primitives/transaction.cpp

src/script/descriptor.cpp

src/bitcoin-cli.cpp

src/rpc/blockchain.cpp

src/rpc/rawtransaction.cpp

src/init.cpp

src/crypto/sha256.cpp

src/consensus/merkle.h

src/consensus/tx_check.h

src/consensus/tx_verify.h

src/policy/feerate.h

src/policy/feerate.cpp

src/primitives/transaction_identifier.h

src/chainparamsbase.h

src/chainparamsbase.cpp

src/util/moneystr.cpp

src/crypto/ripemd160.h

src/crypto/sha1.h

src/crypto/sha512.h

src/crypto/hmac_sha256.h

src/crypto/hmac_sha512.h

src/crypto/hmac_sha256.cpp

src/crypto/hmac_sha512.cpp

src/crypto/hkdf_sha256_32.h

src/crypto/hkdf_sha256_32.cpp

src/support/cleanse.h

src/support/cleanse.cpp

src/crypto/siphash.cpp

src/crypto/muhash.h

src/crypto/chacha20.h

src/crypto/poly1305.h

src/crypto/chacha20poly1305.h

src/crypto/chacha20poly1305.cpp

src/util/chaintype.cpp

src/util/obfuscation.h

src/util/byte_units.h

src/util/overflow.h

src/blockencodings.cpp

src/net_permissions.cpp

src/policy/packages.cpp

src/policy/rbf.cpp

src/policy/truc_policy.cpp

src/policy/ephemeral_policy.cpp

src/policy/settings.cpp

src/policy/policy.cpp

src/node/transaction.cpp

src/node/coin.cpp

src/rpc/client.cpp

src/rpc/external_signer.cpp

src/rpc/request.cpp

src/rpc/server_util.cpp

src/rpc/fees.cpp

src/rpc/output_script.cpp

src/rpc/rawtransaction_util.cpp

src/rpc/rawtransaction_util.h

src/rpc/register.h

src/rpc/request.h

src/rpc/server_util.h

src/rpc/protocol.h

src/rpc/server.h

src/rpc/signmessage.cpp

src/rpc/txoutproof.cpp

src/rpc/util.cpp

src/rpc/util.h

src/wallet/rpc/addresses.cpp

src/wallet/rpc/backup.cpp

src/wallet/rpc/coins.cpp

src/wallet/rpc/encrypt.cpp

src/wallet/rpc/signmessage.cpp

src/wallet/rpc/util.cpp

src/wallet/rpc/util.h

src/wallet/coincontrol.cpp

src/wallet/coincontrol.h

src/wallet/context.cpp

src/wallet/context.h

src/wallet/crypter.cpp

src/wallet/crypter.h

src/wallet/db.cpp

src/wallet/export.cpp

src/wallet/external_signer_scriptpubkeyman.cpp

src/wallet/rpc/spend.cpp

src/wallet/rpc/transactions.cpp

src/wallet/rpc/wallet.cpp

src/wallet/feebumper.cpp

src/wallet/feebumper.h

src/index/base.h

src/index/base.cpp

src/index/txindex.h

src/index/txindex.cpp

src/index/txindex_key.h

src/index/txospenderindex.h

src/index/txospenderindex.cpp

src/index/blockfilterindex.h

src/index/blockfilterindex.cpp

src/index/coinstatsindex.h

src/index/coinstatsindex.cpp

src/index/db_key.h

src/index/disktxpos.h

src/kernel/chain.cpp

src/kernel/chain.h

src/kernel/checks.cpp

src/kernel/checks.h

src/kernel/context.cpp

src/kernel/context.h

src/kernel/cs_main.cpp

src/kernel/cs_main.h

src/kernel/disconnected_transactions.cpp

src/kernel/disconnected_transactions.h

src/kernel/mempool_removal_reason.cpp

src/kernel/mempool_removal_reason.h

src/kernel/coinstats.cpp

src/kernel/coinstats.h

src/kernel/chainparams.cpp

src/kernel/chainparams.h

src/wallet/sqlite.cpp

src/wallet/sqlite.h

src/wallet/transaction.cpp

src/wallet/transaction.h

src/wallet/dump.cpp

src/wallet/dump.h

src/wallet/init.cpp

src/wallet/walletutil.cpp

src/wallet/walletutil.h

src/wallet/wallettool.cpp

src/wallet/wallettool.h

src/wallet/export.h

src/wallet/migrate.cpp

src/wallet/migrate.h

src/wallet/db.h

src/wallet/walletdb.cpp

src/wallet/interfaces.cpp

src/wallet/scriptpubkeyman.cpp

src/wallet/scriptpubkeyman.h

src/kernel/bitcoinkernel.cpp

src/kernel/bitcoinkernel.h

src/kernel/bitcoinkernel_wrapper.h

src/node/chainstate.cpp

src/node/chainstate.h

src/node/blockstorage.cpp

src/node/blockstorage.h

src/node/mempool_persist.cpp

src/node/mempool_persist.h

src/node/utxo_snapshot.cpp

src/node/utxo_snapshot.h

src/node/kernel_notifications.cpp

src/node/kernel_notifications.h

src/node/blockmanager_args.cpp

src/kernel/blockmanager_opts.h

src/util/expected.cpp

src/policy/settings.h

src/util/types.h

src/kernel/messagestartchars.h

src/kernel/warning.h

src/util/exception.h

src/common/license_info.h

src/node/coins_view_args.h

src/node/database_args.h

src/util/batchpriority.h

src/util/ui_change_type.h

src/node/coins_view_args.cpp

src/node/peerman_args.h

src/util/serfloat.h

src/node/blockmanager_args.h

src/node/database_args.cpp

src/util/overloaded.h

src/interfaces/types.h

src/node/chainstatemanager_args.h

src/node/minisketchwrapper.h

src/util/macros.h

src/util/syserror.h

src/common/run_command.h

src/util/bytevectorhash.cpp

src/node/mempool_persist_args.cpp

src/util/exec.h

src/util/rbf.h

src/crypto/hex_base.h

src/node/mempool_persist_args.h

src/interfaces/echo.h

src/util/any.h

src/util/batchpriority.cpp

src/util/threadnames.h

src/node/coin.h

src/node/mempool_args.h

src/util/asmap.h

src/util/bytevectorhash.h

src/node/context.cpp

src/util/insert.h

src/util/readwritefile.h

src/node/peerman_args.cpp

src/node/interface_ui.cpp

src/interfaces/handler.h

src/node/mining_args.h

src/util/hasher.cpp

src/common/init.h

src/kernel/mempool_limits.h

src/common/system.h

src/crypto/sha3.h

src/util/threadinterrupt.cpp

src/node/protocol_version.h

src/util/exception.cpp

src/common/messages.h

src/node/connection_types.cpp

src/util/bip32.h

src/common/license_info.cpp

src/util/stdmutex.h

src/common/run_command.cpp

src/util/check.cpp

src/util/golombrice.h

src/node/types.h

src/node/timeoffsets.h

src/util/readwritefile.cpp

src/util/fastrange.h

src/util/signalinterrupt.h

src/util/task_runner.h

src/util/syserror.cpp

src/common/interfaces.cpp

src/common/types.h

src/util/threadinterrupt.h

src/kernel/chainstatemanager_opts.h

src/node/psbt.h

src/policy/ephemeral_policy.h

src/util/trace.h

src/common/url.cpp

src/kernel/mempool_options.h

src/util/serfloat.cpp

src/kernel/notifications_interface.h

src/node/timeoffsets.cpp

src/node/warnings.cpp

src/util/hash_type.h

src/crypto/hex_base.cpp

src/node/eviction.h

src/util/tokenbucket.h

src/crypto/aes.h

src/common/pcp.h

src/util/feefrac.cpp

src/node/transaction.h

src/util/threadnames.cpp

src/common/signmessage.h

src/util/exec.cpp

src/util/signalinterrupt.cpp

src/clientversion.cpp

src/common/signmessage.cpp

src/compat/assumptions.h

src/compat/byteswap.h

src/deploymentinfo.cpp

src/deploymentinfo.h

src/deploymentstatus.cpp

src/deploymentstatus.h

src/dummywallet.cpp

src/external_signer.h

src/init/bitcoin-gui.cpp

src/init/bitcoin-node.cpp

src/init/bitcoin-qt.cpp

src/init/bitcoin-wallet.cpp

src/init/bitcoind.cpp

src/init/common.h

src/interfaces/init.h

src/interfaces/ipc.h

src/key_io.h

src/logging/categories.h

src/logging/timer.h

src/mapport.h

src/musig.h

src/net_permissions.h

src/netgroup.h

src/netmessagemaker.h

src/node/chainstatemanager_args.cpp

src/node/connection_types.h

src/node/context.h

src/node/interface_ui.h

src/node/mempool_args.cpp

src/node/mining_args.cpp

src/node/minisketchwrapper.cpp

src/node/txreconciliation.h

src/policy/fees/estimator_args.cpp

src/policy/fees/estimator_args.h

src/policy/fees/estimator_man.cpp

src/policy/fees/estimator_man.h

src/policy/packages.h

src/policy/rbf.h

src/policy/truc_policy.h

src/pow.h

src/primitives/block.cpp

src/randomenv.h

src/rest.h

src/script/keyorigin.h

src/script/parsing.cpp

src/script/parsing.h

src/script/script_error.h

src/script/sigcache.cpp

src/script/sigcache.h

src/script/solver.h

src/script/verify_flags.h

src/semaphore_grant.h

src/signet.h

src/span.h

src/support/allocators/secure.h

src/support/allocators/zeroafterfree.h

src/util/tokenpipe.cpp

src/util/translation.h

src/util/vector.h

src/versionbits.h

src/versionbits_impl.h

src/wallet/external_signer_scriptpubkeyman.h

src/wallet/fees.h

src/wallet/load.h

src/wallet/receive.h

src/wallet/rpc/wallet.h

src/wallet/types.h

src/walletinitinterface.h

src/zmq/zmqabstractnotifier.cpp

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