From d4d0aa6ed6c9f0408723c923df01f7718d42b1b0 Mon Sep 17 00:00:00 2001
From: Christian Schwarz <christian@neon.tech>
Date: Mon, 2 Jan 2023 18:44:51 +0100
Subject: [PATCH] gc_iteration_internal: better log message & debug log level
 if nothing to do

fixes https://github.com/neondatabase/neon/issues/3107
---
 pageserver/src/tenant.rs | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/pageserver/src/tenant.rs b/pageserver/src/tenant.rs
index 71cdc6cf1c..d74f263f08 100644
--- a/pageserver/src/tenant.rs
+++ b/pageserver/src/tenant.rs
@@ -1874,7 +1874,12 @@ impl Tenant {
 
         utils::failpoint_sleep_millis_async!("gc_iteration_internal_after_getting_gc_timelines");
 
-        info!("starting on {} timelines", gc_timelines.len());
+        // If there is nothing to GC, we don't want any messages in the INFO log.
+        if !gc_timelines.is_empty() {
+            info!("{} timelines need GC", gc_timelines.len());
+        } else {
+            debug!("{} timelines need GC", gc_timelines.len());
+        }
 
         // Perform GC for each timeline.
         //