go tool pprof 127.0.0.1:6000/debug/pprof/allocs
Fetching profile over HTTP from http://127.0.0.1:6000/debug/pprof/allocs
Saved profile in /home/adr/pprof/pprof.kcp.alloc_objects.alloc_space.inuse_objects.inuse_space.005.pb.gz
File: kcp
Type: alloc_space
Time: Oct 5, 2023 at 12:31pm (CEST)
Entering interactive mode (type "help" for commands, "o" for options)
(pprof) top30
Showing nodes accounting for 3.94GB, 52.22% of 7.55GB total
Dropped 2859 nodes (cum <= 0.04GB)
Showing top 30 nodes out of 512
      flat  flat%   sum%        cum   cum%
    0.54GB  7.13%  7.13%     0.70GB  9.33%  k8s.io/apimachinery/pkg/apis/meta/v1.(*ObjectMeta).DeepCopyInto
    0.36GB  4.76% 11.90%     0.36GB  4.76%  go.etcd.io/etcd/server/v3/mvcc/backend.(*bucketBuffer).Copy
    0.26GB  3.49% 15.38%     0.99GB 13.14%  k8s.io/api/rbac/v1.(*ClusterRoleBinding).DeepCopy (inline)
    0.25GB  3.28% 18.67%     0.25GB  3.28%  github.com/prometheus/client_golang/prometheus.(*histogram).Write
    0.24GB  3.24% 21.91%     0.24GB  3.24%  k8s.io/apimachinery/pkg/runtime.DeepCopyJSONValue
    0.23GB  3.08% 24.99%     0.23GB  3.08%  k8s.io/utils/buffer.NewRingGrowing
    0.17GB  2.22% 27.20%     0.17GB  2.22%  google.golang.org/grpc/internal/transport.(*serverHandlerTransport).HandleStreams.func5
    0.16GB  2.07% 29.27%     0.37GB  4.87%  encoding/json.mapEncoder.encode
    0.13GB  1.74% 31.01%     0.13GB  1.74%  k8s.io/apimachinery/pkg/conversion.ConversionFuncs.AddUntyped
    0.13GB  1.72% 32.73%     0.13GB  1.72%  k8s.io/apimachinery/pkg/apis/meta/v1.(*FieldsV1).DeepCopyInto (inline)
    0.12GB  1.62% 34.35%     0.20GB  2.65%  k8s.io/apimachinery/pkg/runtime.(*Scheme).AddKnownTypeWithName
    0.12GB  1.58% 35.93%     0.12GB  1.58%  bytes.growSlice
    0.10GB  1.36% 37.29%     0.10GB  1.36%  reflect.copyVal
    0.10GB  1.27% 38.56%     0.10GB  1.27%  go.etcd.io/etcd/api/v3/mvccpb.(*KeyValue).Unmarshal
    0.09GB  1.24% 39.80%     0.09GB  1.24%  k8s.io/apiextensions-apiserver/pkg/apiserver/schema/defaulting.getSchemaForField
    0.09GB  1.18% 40.98%     0.09GB  1.18%  k8s.io/apimachinery/pkg/apis/meta/v1/unstructured.setNestedFieldNoCopy
    0.08GB  1.13% 42.11%     0.12GB  1.54%  sigs.k8s.io/json/internal/golang/encoding/json.(*decodeState).objectInterface
    0.08GB  1.07% 43.18%     0.10GB  1.27%  k8s.io/apiextensions-apiserver/pkg/apiserver/schema/objectmeta.(*coercer).coerce
    0.08GB  1.05% 44.23%     0.37GB  4.88%  encoding/json.Marshal
    0.07GB  0.93% 45.17%     0.07GB  0.93%  net/http.(*Request).WithContext
    0.06GB   0.8% 45.96%     0.07GB  0.94%  encoding/json.(*decodeState).objectInterface
    0.06GB  0.78% 46.74%     0.06GB  0.79%  k8s.io/apiextensions-apiserver/pkg/apiserver/schema/pruning.prune
    0.06GB  0.76% 47.50%     0.06GB  0.76%  internal/reflectlite.Swapper
    0.06GB  0.73% 48.23%     0.07GB  0.92%  compress/flate.NewWriter
    0.05GB  0.73% 48.96%     0.05GB  0.73%  github.com/json-iterator/go.Parse
    0.05GB  0.71% 49.66%     0.05GB  0.71%  go.etcd.io/etcd/server/v3/mvcc/backend.newBucketBuffer
    0.05GB  0.69% 50.35%     1.07GB 14.17%  github.com/kcp-dev/kcp/pkg/virtual/framework/wrappers/rbac.mergedClusterRoleBindingLister.List
    0.05GB  0.65% 51.00%     0.05GB  0.65%  golang.org/x/net/http2.(*Framer).readMetaFrame.func1
    0.05GB  0.62% 51.62%     0.73GB  9.65%  k8s.io/api/rbac/v1.(*ClusterRoleBinding).DeepCopyInto
    0.05GB   0.6% 52.22%     0.05GB   0.6%  runtime/pprof.writeGoroutineStacks