pitrou commented on code in PR #15101:
URL: https://github.com/apache/arrow/pull/15101#discussion_r1060486920
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cpp/src/parquet/arrow/reader_writer_benchmark.cc:
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@@ -197,6 +197,52 @@ BENCHMARK_TEMPLATE2(BM_WriteColumn, true, DoubleType);
BENCHMARK_TEMPLATE2(BM_WriteColumn, false, BooleanType);
BENCHMARK_TEMPLATE2(BM_WriteColumn, true, BooleanType);
+int32_t kInfiniteUniqueValues = -1;
+
+std::shared_ptr<::arrow::Table> RandomStringTable(int64_t length, int64_t
unique_values,
+ int64_t null_percentage) {
+ std::shared_ptr<::arrow::DataType> type = ::arrow::utf8();
+ std::shared_ptr<::arrow::Array> arr;
+ ::arrow::random::RandomArrayGenerator generator(500);
+ double null_probability = static_cast<double>(null_percentage) / 100.0;
+ if (unique_values == kInfiniteUniqueValues) {
+ arr = generator.String(length, /*min_length=*/3, /*max_length=*/32,
+ /*null_probability=*/null_probability);
+ } else {
+ arr = generator.StringWithRepeats(length, /*unique=*/unique_values,
+ /*min_length=*/3, /*max_length=*/32,
+ /*null_probability=*/null_probability);
+ }
+ return ::arrow::Table::Make(
+ ::arrow::schema({::arrow::field("column", type, null_percentage > 0)}),
{arr});
+}
+
+static void BM_WriteBinaryColumn(::benchmark::State& state) {
+ std::shared_ptr<::arrow::Table> table =
+ RandomStringTable(BENCHMARK_SIZE, state.range(1), state.range(0));
+
+ while (state.KeepRunning()) {
+ auto output = CreateOutputStream();
+ EXIT_NOT_OK(
+ WriteTable(*table, ::arrow::default_memory_pool(), output,
BENCHMARK_SIZE));
+ }
+
+ int64_t total_bytes = table->column(0)->chunk(0)->data()->buffers[1]->size();
Review Comment:
This is the offsets buffer but doesn't take into account the data buffer.
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