westonpace commented on code in PR #12755:
URL: https://github.com/apache/arrow/pull/12755#discussion_r844612558
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cpp/src/arrow/compute/exec/expression_benchmark.cc:
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@@ -69,6 +70,26 @@ static void SimplifyFilterWithGuarantee(benchmark::State&
state, Expression filt
}
}
+static void ExecuteScalarExpressionOverhead(benchmark::State& state,
Expression expr) {
+ const auto rows_per_batch = static_cast<int32_t>(state.range(0));
+ const auto num_batches = 10000000 / rows_per_batch;
+
+ ExecContext ctx;
+ auto dataset_schema = schema({
+ field("x", int64()),
+ });
+ ExecBatch input({Datum(ConstantArrayGenerator::Int64(rows_per_batch, 5))},
+ /*length=*/1);
+
+ ASSIGN_OR_ABORT(auto bound, expr.Bind(*dataset_schema));
+ for (auto _ : state) {
+ for (int it = 0; it < num_batches; ++it)
+ ABORT_NOT_OK(ExecuteScalarExpression(bound, input, &ctx).status());
+ }
+ state.counters["rows_per_second"] =
+ benchmark::Counter(num_batches * rows_per_batch,
benchmark::Counter::kIsRate);
Review Comment:
This needs to be `state.iterations() * num_batches * rows_per_batch`
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