1 files changed, 35 insertions, 0 deletions
diff --git a/library/cpp/yt/system/benchmarks/process.cpp b/library/cpp/yt/system/benchmarks/process.cpp
new file mode 100644
index 00000000000..74b4b6b1e13
--- /dev/null
+++ b/library/cpp/yt/system/benchmarks/process.cpp
@@ -0,0 +1,35 @@
+#include <benchmark/benchmark.h>
+
+#include <library/cpp/yt/system/process_id.h>
+
+#include <util/system/getpid.h>
+
+namespace NYT {
+namespace {
+
+////////////////////////////////////////////////////////////////////////////////
+
+void BM_GetProcessId(benchmark::State& state)
+{
+    // Cached getpid: only the first call hits the kernel.
+    for (auto _ : state) {
+        benchmark::DoNotOptimize(GetProcessId());
+    }
+}
+
+BENCHMARK(BM_GetProcessId);
+
+void BM_RawGetPid(benchmark::State& state)
+{
+    // Uncached getpid syscall (uncached on glibc >= 2.25), for comparison.
+    for (auto _ : state) {
+        benchmark::DoNotOptimize(::GetPID());
+    }
+}
+
+BENCHMARK(BM_RawGetPid);
+
+////////////////////////////////////////////////////////////////////////////////
+
+} // namespace
+} // namespace NYT