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Merge bitcoin/bitcoin#30324: optimization: Moved repeated -printpriority fetching out of AddToBlock

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323ce30308 Moved the repeated -printpriority fetching out of AddToBlock (Lőrinc)

Pull request description:

  `AddToBlock` was called repeatedly from `addPackageTxs` where the constant value of `printpriority` is recalculated every time.

  <img src="https://github.com/bitcoin/bitcoin/assets/1841944/6fd89647-7b6c-4f44-bd04-98d16cd2a938">

  This showed up during profiling of AssembleBlock, fetching it once in the constructor results in a small speed increase for many iterations.

  > ./src/bench/bench_bitcoin --filter='AssembleBlock' --min-time=10000

  before:
  |               ns/op |                op/s |    err% |     total | benchmark
  |--------------------:|--------------------:|--------:|----------:|:----------
  |          156,460.15 |            6,391.40 |    0.1% |     11.03 | `AssembleBlock`

  after:
  |               ns/op |                op/s |    err% |     total | benchmark
  |--------------------:|--------------------:|--------:|----------:|:----------
  |          149,289.55 |            6,698.39 |    0.3% |     10.97 | `AssembleBlock`

  ---

  The slight speedup shows up in CI as well:
  <img src="https://github.com/bitcoin/bitcoin/assets/1841944/3be779c9-2dce-4a96-ae5f-cab5435bd72f">

ACKs for top commit:
  maflcko:
    ACK 323ce30308
  achow101:
    ACK 323ce30308
  tdb3:
    re ACK 323ce30308
  furszy:
    utACK 323ce30308

Tree-SHA512: c2a0aab429646453ad0470956529f1cac8c38778c4c53f82c92c6cbaaaeb69f3d3603c0014ff097844b151e9da7caa2371a4676244caea96527cb540e66825a3
This commit is contained in:
Ava Chow
2024-07-02 16:43:45 -04:00
parent 1e16b10cfa 323ce30308
commit be63674c18
3 changed files with 6 additions and 5 deletions
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4
src/init.cpp
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@@ -126,7 +126,7 @@ using node::BlockManager;
using node::CacheSizes;
using node::CalculateCacheSizes;
using node::DEFAULT_PERSIST_MEMPOOL;
using node::DEFAULT_PRINTPRIORITY;
using node::DEFAULT_PRINT_MODIFIED_FEE;
using node::DEFAULT_STOPATHEIGHT;
using node::DumpMempool;
using node::LoadMempool;
@@ -624,7 +624,7 @@ void SetupServerArgs(ArgsManager& argsman)
strprintf("Maximum tip age in seconds to consider node in initial block download (default: %u)",
Ticks<std::chrono::seconds>(DEFAULT_MAX_TIP_AGE)),
ArgsManager::ALLOW_ANY | ArgsManager::DEBUG_ONLY, OptionsCategory::DEBUG_TEST);
argsman.AddArg("-printpriority", strprintf("Log transaction fee rate in " + CURRENCY_UNIT + "/kvB when mining blocks (default: %u)", DEFAULT_PRINTPRIORITY), ArgsManager::ALLOW_ANY | ArgsManager::DEBUG_ONLY, OptionsCategory::DEBUG_TEST);
argsman.AddArg("-printpriority", strprintf("Log transaction fee rate in " + CURRENCY_UNIT + "/kvB when mining blocks (default: %u)", DEFAULT_PRINT_MODIFIED_FEE), ArgsManager::ALLOW_ANY | ArgsManager::DEBUG_ONLY, OptionsCategory::DEBUG_TEST);
argsman.AddArg("-uacomment=<cmt>", "Append comment to the user agent string", ArgsManager::ALLOW_ANY, OptionsCategory::DEBUG_TEST);
SetupChainParamsBaseOptions(argsman);