diff --git a/src/sentry/api/urls.py b/src/sentry/api/urls.py
index 025e21db8b9194..f870428afb86fa 100644
--- a/src/sentry/api/urls.py
+++ b/src/sentry/api/urls.py
@@ -452,7 +452,11 @@
         GroupingLevelNewIssuesEndpoint.as_view(),
     ),
     url(r"^(?P<issue_id>[^\/]+)/hashes/split/$", GroupHashesSplitEndpoint.as_view()),
-    url(r"^(?P<issue_id>[^\/]+)/reprocessing/$", GroupReprocessingEndpoint.as_view()),
+    url(
+        r"^(?P<issue_id>[^\/]+)/reprocessing/$",
+        GroupReprocessingEndpoint.as_view(),
+        name="sentry-api-0-issues-reprocessing",
+    ),
     url(r"^(?P<issue_id>[^\/]+)/stats/$", GroupStatsEndpoint.as_view()),
     url(r"^(?P<issue_id>[^\/]+)/tags/$", GroupTagsEndpoint.as_view()),
     url(r"^(?P<issue_id>[^\/]+)/tags/(?P<key>[^/]+)/$", GroupTagKeyDetailsEndpoint.as_view()),
diff --git a/src/sentry/conf/server.py b/src/sentry/conf/server.py
index 6206dccd35bb34..4ce828319aebe3 100644
--- a/src/sentry/conf/server.py
+++ b/src/sentry/conf/server.py
@@ -1199,6 +1199,9 @@ def create_partitioned_queues(name):
 # sample rate for post_process_group task
 SENTRY_POST_PROCESS_GROUP_APM_SAMPLING = 0
 
+# sample rate for all reprocessing tasks (except for the per-event ones)
+SENTRY_REPROCESSING_APM_SAMPLING = 0
+
 # ----
 # end APM config
 # ----
diff --git a/src/sentry/reprocessing2.py b/src/sentry/reprocessing2.py
index 0cd05105189aac..ba19da8dd63e5f 100644
--- a/src/sentry/reprocessing2.py
+++ b/src/sentry/reprocessing2.py
@@ -514,6 +514,8 @@ def start_group_reprocessing(
         referrer="reprocessing2.start_group_reprocessing",
     )["data"][0]["times_seen"]
 
+    sentry_sdk.set_extra("event_count", event_count)
+
     if max_events is not None:
         event_count = min(max_events, event_count)
 
diff --git a/src/sentry/tasks/reprocessing2.py b/src/sentry/tasks/reprocessing2.py
index 9d47ddcecc9df0..4c8b97e4a1eb80 100644
--- a/src/sentry/tasks/reprocessing2.py
+++ b/src/sentry/tasks/reprocessing2.py
@@ -7,6 +7,7 @@
 from sentry import eventstore, eventstream, nodestore
 from sentry.eventstore.models import Event
 from sentry.tasks.base import instrumented_task, retry
+from sentry.utils import metrics
 from sentry.utils.query import celery_run_batch_query
 
 
@@ -27,6 +28,8 @@ def reprocess_group(
     acting_user_id=None,
 ):
     sentry_sdk.set_tag("project", project_id)
+    sentry_sdk.set_tag("group_id", group_id)
+
     from sentry.reprocessing2 import (
         CannotReprocess,
         buffered_handle_remaining_events,
@@ -35,9 +38,13 @@ def reprocess_group(
         start_group_reprocessing,
     )
 
+    sentry_sdk.set_tag("is_start", "false")
+
     if start_time is None:
         assert new_group_id is None
         start_time = time.time()
+        metrics.incr("events.reprocessing.start_group_reprocessing", sample_rate=1.0)
+        sentry_sdk.set_tag("is_start", "true")
         new_group_id = start_group_reprocessing(
             project_id,
             group_id,
@@ -154,6 +161,12 @@ def handle_remaining_events(
             event_ids_redis_key
         )
 
+    metrics.timing(
+        "events.reprocessing.handle_remaining_events.batch_size",
+        len(event_ids),
+        sample_rate=1.0,
+    )
+
     assert remaining_events in ("delete", "keep")
 
     if remaining_events == "delete":
diff --git a/src/sentry/utils/sdk.py b/src/sentry/utils/sdk.py
index 167330f34fd20a..3f7374aee52b28 100644
--- a/src/sentry/utils/sdk.py
+++ b/src/sentry/utils/sdk.py
@@ -69,6 +69,8 @@
     "sentry-logout": 0.1,
     "sentry-register": settings.SAMPLED_DEFAULT_RATE,
     "sentry-2fa-dialog": settings.SAMPLED_DEFAULT_RATE,
+    # reprocessing
+    "sentry-api-0-issues-reprocessing": settings.SENTRY_REPROCESSING_APM_SAMPLING,
 }
 if settings.ADDITIONAL_SAMPLED_URLS:
     SAMPLED_URL_NAMES.update(settings.ADDITIONAL_SAMPLED_URLS)
@@ -84,6 +86,9 @@
     "sentry.tasks.app_store_connect.refresh_all_builds": settings.SENTRY_APPCONNECT_APM_SAMPLING,
     "sentry.tasks.process_suspect_commits": settings.SENTRY_SUSPECT_COMMITS_APM_SAMPLING,
     "sentry.tasks.post_process.post_process_group": settings.SENTRY_POST_PROCESS_GROUP_APM_SAMPLING,
+    "sentry.tasks.reprocessing2.handle_remaining_events": settings.SENTRY_REPROCESSING_APM_SAMPLING,
+    "sentry.tasks.reprocessing2.reprocess_group": settings.SENTRY_REPROCESSING_APM_SAMPLING,
+    "sentry.tasks.reprocessing2.finish_reprocessing": settings.SENTRY_REPROCESSING_APM_SAMPLING,
 }