Merge bitcoin/bitcoin#18815: bench: Add logging benchmark

fafe06c379316f165e88b8de7300a716cef25d0a bench: Sort bench_bench_bitcoin_SOURCES (MarcoFalke)
fa31dc9b714401b67480232ef552d1479f5e6902 bench: Add logging benchmark (MarcoFalke)

Pull request description:

  Might make finding performance bottlenecks or regressions (https://github.com/bitcoin/bitcoin/pull/17218) easier.

  For example, fuzzing relies on disabled logging to be as fast as possible.

ACKs for top commit:
  dergoegge:
    ACK fafe06c379316f165e88b8de7300a716cef25d0a

Tree-SHA512: dd858f3234a4dfb00bd7dec4398eb076370a4b9746aa24eecee7da86f6882398a2d086e5ab0b7c9f7321abcb135e7ffc54cc78e60d18b90379c6dba6d613b3f7

1 files changed, 48 insertions, 0 deletions

diff --git a/src/bench/logging.cpp b/src/bench/logging.cpp
new file mode 100644
index 0000000000..d28777df9e
--- /dev/null
+++ b/src/bench/logging.cpp
@@ -0,0 +1,48 @@
+// Copyright (c) 2020 The Bitcoin Core developers
+// Distributed under the MIT software license, see the accompanying
+// file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
+#include <bench/bench.h>
+#include <logging.h>
+#include <test/util/setup_common.h>
+
+
+static void Logging(benchmark::Bench& bench, const std::vector<const char*>& extra_args, const std::function<void()>& log)
+{
+    TestingSetup test_setup{
+        CBaseChainParams::REGTEST,
+        extra_args,
+    };
+
+    bench.run([&] { log(); });
+}
+
+static void LoggingYoThreadNames(benchmark::Bench& bench)
+{
+    Logging(bench, {"-logthreadnames=1"}, [] { LogPrintf("%s\n", "test"); });
+}
+static void LoggingNoThreadNames(benchmark::Bench& bench)
+{
+    Logging(bench, {"-logthreadnames=0"}, [] { LogPrintf("%s\n", "test"); });
+}
+static void LoggingYoCategory(benchmark::Bench& bench)
+{
+    Logging(bench, {"-logthreadnames=0", "-debug=net"}, [] { LogPrint(BCLog::NET, "%s\n", "test"); });
+}
+static void LoggingNoCategory(benchmark::Bench& bench)
+{
+    Logging(bench, {"-logthreadnames=0", "-debug=0"}, [] { LogPrint(BCLog::NET, "%s\n", "test"); });
+}
+static void LoggingNoFile(benchmark::Bench& bench)
+{
+    Logging(bench, {"-nodebuglogfile", "-debug=1"}, [] {
+        LogPrintf("%s\n", "test");
+        LogPrint(BCLog::NET, "%s\n", "test");
+    });
+}
+
+BENCHMARK(LoggingYoThreadNames);
+BENCHMARK(LoggingNoThreadNames);
+BENCHMARK(LoggingYoCategory);
+BENCHMARK(LoggingNoCategory);
+BENCHMARK(LoggingNoFile);