diff --git a/swh/loader/core/loader.py b/swh/loader/core/loader.py
--- a/swh/loader/core/loader.py
+++ b/swh/loader/core/loader.py
@@ -467,17 +467,36 @@
         ), "lister_instance_name is None, but lister_name is not"
 
         metadata = []
-        for cls in get_fetchers_for_lister(self.lister_name):
+
+        fetcher_classes = get_fetchers_for_lister(self.lister_name)
+        statsd.histogram(
+            f"{STATSD_PREFIX}.metadata.fetchers",
+            len(fetcher_classes),
+            tags={"visit_type": self.visit_type},
+        )
+        for cls in fetcher_classes:
             metadata_fetcher = cls(
                 origin=self.origin,
                 lister_name=self.lister_name,
                 lister_instance_name=self.lister_instance_name,
                 credentials=self.metadata_fetcher_credentials,
             )
-            with self.statsd_timed("fetch_one_metadata"):
+            with self.statsd_timed(
+                "fetch_one_metadata", tags={"fetcher": cls.FETCHER_NAME}
+            ):
                 metadata.extend(metadata_fetcher.get_origin_metadata())
             if self.parent_origins is None:
                 self.parent_origins = metadata_fetcher.get_parent_origins()
+                statsd.histogram(
+                    f"{STATSD_PREFIX}.metadata.parent_origins",
+                    len(self.parent_origins),
+                    tags={"fetcher": cls.FETCHER_NAME, "visit_type": self.visit_type},
+                )
+        statsd.histogram(
+            f"{STATSD_PREFIX}.metadata.objects",
+            len(metadata),
+            tags={"visit_type": self.visit_type},
+        )
 
         return metadata
 
diff --git a/swh/loader/core/metadata_fetchers.py b/swh/loader/core/metadata_fetchers.py
--- a/swh/loader/core/metadata_fetchers.py
+++ b/swh/loader/core/metadata_fetchers.py
@@ -20,6 +20,7 @@
     to loaders, via setuptools entrypoints."""
 
     SUPPORTED_LISTERS: Set[str]
+    FETCHER_NAME: str
 
     def __init__(
         self,
diff --git a/swh/loader/core/tests/test_loader.py b/swh/loader/core/tests/test_loader.py
--- a/swh/loader/core/tests/test_loader.py
+++ b/swh/loader/core/tests/test_loader.py
@@ -97,7 +97,8 @@
 
 
 class DummyMetadataFetcher:
-    SUPPORTED_LISTERS = {"fake-lister"}
+    SUPPORTED_LISTERS = {"fake-forge"}
+    FETCHER_NAME = "fake-forge"
 
     def __init__(self, origin, credentials, lister_name, lister_instance_name):
         pass
@@ -110,7 +111,8 @@
 
 
 class DummyMetadataFetcherWithFork:
-    SUPPORTED_LISTERS = {"fake-lister"}
+    SUPPORTED_LISTERS = {"fake-forge"}
+    FETCHER_NAME = "fake-forge"
 
     def __init__(self, origin, credentials, lister_name, lister_instance_name):
         pass
@@ -151,7 +153,7 @@
     )
 
     loader = DummyBaseLoader(
-        swh_storage, lister_name="fake-lister", lister_instance_name=""
+        swh_storage, lister_name="fake-forge", lister_instance_name=""
     )
     result = loader.load()
     assert result == {"status": "eventful"}
@@ -160,7 +162,7 @@
     fetcher_cls.assert_called_once_with(
         origin=ORIGIN,
         credentials={},
-        lister_name="fake-lister",
+        lister_name="fake-forge",
         lister_instance_name="",
     )
     assert swh_storage.raw_extrinsic_metadata_get(
@@ -195,7 +197,7 @@
     )
 
     loader = DummyBaseLoader(
-        swh_storage, lister_name="fake-lister", lister_instance_name=""
+        swh_storage, lister_name="fake-forge", lister_instance_name=""
     )
     result = loader.load()
     assert result == {"status": "eventful"}
@@ -204,7 +206,7 @@
     fetcher_cls.assert_called_once_with(
         origin=ORIGIN,
         credentials={},
-        lister_name="fake-lister",
+        lister_name="fake-forge",
         lister_instance_name="",
     )
     assert swh_storage.raw_extrinsic_metadata_get(