[GitHub] [arrow] pitrou commented on a diff in pull request #36067: GH-36059: [C++][Compute] Reserve space for hashtable for scalar lookup functions

[via GitHub]

pitrou commented on code in PR #36067:
URL: https://github.com/apache/arrow/pull/36067#discussion_r1238609790


##########
cpp/src/arrow/compute/kernels/scalar_set_lookup_benchmark.cc:
##########
@@ -91,35 +91,51 @@ static void IsInStringLargeSet(benchmark::State& state) {
 }
 
 static void IndexInInt8SmallSet(benchmark::State& state) {
-  SetLookupBenchmarkNumeric<Int8Type>(state, "index_in_meta_binary", 
state.range(0));
+  SetLookupBenchmarkNumeric<Int8Type>(state, "index_in_meta_binary", 
state.range(0),
+                                      1 << 18);
 }
 
 static void IndexInInt16SmallSet(benchmark::State& state) {
-  SetLookupBenchmarkNumeric<Int16Type>(state, "index_in_meta_binary", 
state.range(0));
+  SetLookupBenchmarkNumeric<Int16Type>(state, "index_in_meta_binary", 
state.range(0),
+                                       1 << 18);
 }
 
 static void IndexInInt32SmallSet(benchmark::State& state) {
-  SetLookupBenchmarkNumeric<Int32Type>(state, "index_in_meta_binary", 
state.range(0));
+  SetLookupBenchmarkNumeric<Int32Type>(state, "index_in_meta_binary", 
state.range(0),
+                                       1 << 18);
 }
 
 static void IndexInInt64SmallSet(benchmark::State& state) {
-  SetLookupBenchmarkNumeric<Int64Type>(state, "index_in_meta_binary", 
state.range(0));
+  SetLookupBenchmarkNumeric<Int64Type>(state, "index_in_meta_binary", 
state.range(0),
+                                       1 << 18);
+}
+
+static void IndexInInt32LargeSet(benchmark::State& state) {
+  SetLookupBenchmarkNumeric<Int32Type>(state, "index_in_meta_binary", 
state.range(0), 10);
 }
 
 static void IsInInt8SmallSet(benchmark::State& state) {
-  SetLookupBenchmarkNumeric<Int8Type>(state, "is_in_meta_binary", 
state.range(0));
+  SetLookupBenchmarkNumeric<Int8Type>(state, "is_in_meta_binary", 
state.range(0),
+                                      1 << 18);
 }
 
 static void IsInInt16SmallSet(benchmark::State& state) {
-  SetLookupBenchmarkNumeric<Int16Type>(state, "is_in_meta_binary", 
state.range(0));
+  SetLookupBenchmarkNumeric<Int16Type>(state, "is_in_meta_binary", 
state.range(0),
+                                       1 << 18);
 }
 
 static void IsInInt32SmallSet(benchmark::State& state) {
-  SetLookupBenchmarkNumeric<Int32Type>(state, "is_in_meta_binary", 
state.range(0));
+  SetLookupBenchmarkNumeric<Int32Type>(state, "is_in_meta_binary", 
state.range(0),
+                                       1 << 18);
 }
 
 static void IsInInt64SmallSet(benchmark::State& state) {
-  SetLookupBenchmarkNumeric<Int64Type>(state, "is_in_meta_binary", 
state.range(0));
+  SetLookupBenchmarkNumeric<Int64Type>(state, "is_in_meta_binary", 
state.range(0),
+                                       1 << 18);
+}
+
+static void IsInInt32LargeSet(benchmark::State& state) {
+  SetLookupBenchmarkNumeric<Int32Type>(state, "is_in_meta_binary", 
state.range(0), 10);

Review Comment:
   That sounds fine to me.



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