diff --git a/pageserver/src/layered_repository.rs b/pageserver/src/layered_repository.rs
index a352f31169..f07a2639d3 100644
--- a/pageserver/src/layered_repository.rs
+++ b/pageserver/src/layered_repository.rs
@@ -630,6 +630,8 @@ impl LayeredRepository {
         horizon: u64,
         checkpoint_before_gc: bool,
     ) -> Result<GcResult> {
+        let _span_guard =
+            info_span!("gc iteration", tenant = %self.tenantid, timeline = ?target_timelineid);
         let mut totals: GcResult = Default::default();
         let now = Instant::now();