add builder reserve() calls some obvious places

3 files changed, 3 insertions, 0 deletions

diff --git a/searchlib/src/vespa/searchlib/features/tensor_from_attribute_executor.h b/searchlib/src/vespa/searchlib/features/tensor_from_attribute_executor.h
index d6175bf57b7..aae3d773820 100644
--- a/searchlib/src/vespa/searchlib/features/tensor_from_attribute_executor.h
+++ b/searchlib/src/vespa/searchlib/features/tensor_from_attribute_executor.h
@@ -42,6 +42,7 @@ TensorFromAttributeExecutor<WeightedBufferType>::execute(uint32_t docId)
 {
     _attrBuffer.fill(*_attribute, docId);
     vespalib::tensor::DirectSparseTensorBuilder<double> builder(_type);
+    builder.reserve(_attrBuffer.size());
     vespalib::tensor::SparseTensorAddressBuilder address;
     for (size_t i = 0; i < _attrBuffer.size(); ++i) {
         address.clear();
diff --git a/searchlib/src/vespa/searchlib/features/tensor_from_labels_feature.cpp b/searchlib/src/vespa/searchlib/features/tensor_from_labels_feature.cpp
index fbeed77e5d0..e6c5f22dd16 100644
--- a/searchlib/src/vespa/searchlib/features/tensor_from_labels_feature.cpp
+++ b/searchlib/src/vespa/searchlib/features/tensor_from_labels_feature.cpp
@@ -92,6 +92,7 @@ createQueryExecutor(const search::fef::IQueryEnvironment &env,
         std::vector<vespalib::string> vector;
         ArrayParser::parse(prop.get(), vector);
         DirectSparseTensorBuilder<double> tensorBuilder(type);
+        tensorBuilder.reserve(vector.size());
         SparseTensorAddressBuilder address;
         for (const auto &elem : vector) {
             address.clear();
diff --git a/searchlib/src/vespa/searchlib/features/tensor_from_weighted_set_feature.cpp b/searchlib/src/vespa/searchlib/features/tensor_from_weighted_set_feature.cpp
index a3d0aa1f706..5926c91c7c5 100644
--- a/searchlib/src/vespa/searchlib/features/tensor_from_weighted_set_feature.cpp
+++ b/searchlib/src/vespa/searchlib/features/tensor_from_weighted_set_feature.cpp
@@ -107,6 +107,7 @@ createQueryExecutor(const search::fef::IQueryEnvironment &env,
         WeightedStringVector vector;
         WeightedSetParser::parse(prop.get(), vector);
         DirectSparseTensorBuilder<double> tensorBuilder(type);
+        tensorBuilder.reserve(vector._data.size());
         SparseTensorAddressBuilder address;
         for (const auto &elem : vector._data) {
             address.clear();