test(nns): Add a benchmark for list neurons

rs/nns/governance/canbench/canbench_results.yml

@@ -1,55 +1,55 @@
 benches:
   add_neuron_active_maximum:
     total:
-      instructions: 36177920
+      instructions: 36176826
       heap_increase: 1
       stable_memory_increase: 0
     scopes: {}
   add_neuron_active_typical:
     total:
-      instructions: 1835389
+      instructions: 1835322
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   add_neuron_inactive_maximum:
     total:
-      instructions: 96156666
+      instructions: 96155572
       heap_increase: 1
       stable_memory_increase: 0
     scopes: {}
   add_neuron_inactive_typical:
     total:
-      instructions: 7370994
+      instructions: 7370927
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   cascading_vote_all_heap:
     total:
-      instructions: 34432365
+      instructions: 34422494
       heap_increase: 0
       stable_memory_increase: 128
     scopes: {}
   cascading_vote_heap_neurons_stable_index:
     total:
-      instructions: 56567262
+      instructions: 56557391
       heap_increase: 0
       stable_memory_increase: 128
     scopes: {}
   cascading_vote_stable_everything:
     total:
-      instructions: 372102159
+      instructions: 371631388
       heap_increase: 0
       stable_memory_increase: 128
     scopes: {}
   cascading_vote_stable_neurons_with_heap_index:
     total:
-      instructions: 349917023
+      instructions: 349446252
       heap_increase: 0
       stable_memory_increase: 128
     scopes: {}
   centralized_following_all_stable:
     total:
-      instructions: 173910217
+      instructions: 173749742
       heap_increase: 0
       stable_memory_increase: 128
     scopes: {}
@@ -61,7 +61,7 @@ benches:
     scopes: {}
   draw_maturity_from_neurons_fund_heap:
     total:
-      instructions: 7252619
+      instructions: 7245419
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
@@ -73,16 +73,22 @@ benches:
     scopes: {}
   list_active_neurons_fund_neurons_heap:
     total:
-      instructions: 438096
+      instructions: 440980
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   list_active_neurons_fund_neurons_stable:
     total:
-      instructions: 10293308
+      instructions: 2450275
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
+  list_neurons_heap:
+    total:
+      instructions: 3900688
+      heap_increase: 9
+      stable_memory_increase: 0
+    scopes: {}
   list_neurons_ready_to_unstake_maturity_heap:
     total:
       instructions: 471240
@@ -91,10 +97,16 @@ benches:
     scopes: {}
   list_neurons_ready_to_unstake_maturity_stable:
     total:
-      instructions: 36937433
+      instructions: 36937653
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
+  list_neurons_stable:
+    total:
+      instructions: 97867451
+      heap_increase: 5
+      stable_memory_increase: 0
+    scopes: {}
   list_ready_to_spawn_neuron_ids_heap:
     total:
       instructions: 459353
@@ -103,19 +115,19 @@ benches:
     scopes: {}
   list_ready_to_spawn_neuron_ids_stable:
     total:
-      instructions: 36926134
+      instructions: 36926354
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   neuron_metrics_calculation_heap:
     total:
-      instructions: 536345
+      instructions: 1077651
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   neuron_metrics_calculation_stable:
     total:
-      instructions: 1841727
+      instructions: 2476865
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
@@ -127,7 +139,7 @@ benches:
     scopes: {}
   single_vote_all_stable:
     total:
-      instructions: 2474981
+      instructions: 2474974
       heap_increase: 0
       stable_memory_increase: 128
     scopes: {}

rs/nns/governance/src/governance/benches.rs

@@ -4,7 +4,8 @@ use crate::{
     neuron_store::NeuronStore,
     pb::v1::{
         neuron::Followees, proposal::Action, Ballot, BallotInfo, Governance as GovernanceProto,
-        KnownNeuron, Neuron as NeuronProto, ProposalData, Topic, Vote, VotingPowerEconomics,
+        KnownNeuron, ListNeurons, Neuron as NeuronProto, ProposalData, Topic, Vote,
+        VotingPowerEconomics,
     },
     temporarily_disable_active_neurons_in_stable_memory,
     temporarily_disable_stable_memory_following_index,
@@ -512,3 +513,58 @@ fn compute_ballots_for_new_proposal_with_stable_neurons() -> BenchResult {
             .expect("Failed!");
     })
 }
+
+fn list_neurons_benchmark() -> BenchResult {
+    let neurons = (0..100)
+        .map(|id| {
+            (id, {
+                let mut neuron: NeuronProto = make_neuron(
+                    id,
+                    PrincipalId::new_user_test_id(id),
+                    1_000_000_000,
+                    hashmap! {}, // get the default followees
+                )
+                .into_proto(&VotingPowerEconomics::DEFAULT, 123_456_789);
+                neuron.hot_keys = vec![PrincipalId::new_user_test_id(1)];
+                neuron
+            })
+        })
+        .collect::<BTreeMap<u64, NeuronProto>>();
+
+    let governance_proto = GovernanceProto {
+        neurons,
+        ..GovernanceProto::default()
+    };
+
+    let governance = Governance::new(
+        governance_proto,
+        Box::new(MockEnvironment::new(Default::default(), 0)),
+        Box::new(StubIcpLedger {}),
+        Box::new(StubCMC {}),
+    );
+
+    let request = ListNeurons {
+        neuron_ids: vec![],
+        include_neurons_readable_by_caller: true,
+        include_empty_neurons_readable_by_caller: Some(false),
+        include_public_neurons_in_full_neurons: None,
+    };
+
+    bench_fn(|| {
+        governance.list_neurons(&request, PrincipalId::new_user_test_id(1));
+    })
+}
+
+/// Benchmark list_neurons
+#[bench(raw)]
+fn list_neurons_stable() -> BenchResult {
+    let _f = temporarily_enable_active_neurons_in_stable_memory();
+    list_neurons_benchmark()
+}
+
+/// Benchmark list_neurons
+#[bench(raw)]
+fn list_neurons_heap() -> BenchResult {
+    let _f = temporarily_disable_active_neurons_in_stable_memory();
+    list_neurons_benchmark()
+}

rs/nns/governance/src/neuron_store.rs

@@ -1292,7 +1292,7 @@ impl NeuronStore {
         caller: PrincipalId,
     ) -> Vec<NeuronId> {
         let is_non_empty = |neuron_id: &NeuronId| {
-            self.with_neuron(neuron_id, |neuron| neuron.is_funded())
+            self.with_neuron_sections(neuron_id, NeuronSections::NONE, |neuron| neuron.is_funded())
                 .unwrap_or(false)
         };