From 243a5fa6a8d126b9ae1df0bb388c445b42d0a653 Mon Sep 17 00:00:00 2001
From: Kerollmops <clement@meilisearch.com>
Date: Thu, 20 Feb 2025 14:17:34 +0100
Subject: [PATCH] Log the call trace and congestion

---
 crates/index-scheduler/src/scheduler/mod.rs | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/crates/index-scheduler/src/scheduler/mod.rs b/crates/index-scheduler/src/scheduler/mod.rs
index bcf53127b..42ed92839 100644
--- a/crates/index-scheduler/src/scheduler/mod.rs
+++ b/crates/index-scheduler/src/scheduler/mod.rs
@@ -352,6 +352,17 @@ impl IndexScheduler {
             congestion_info
         });
 
+        if let Some(congestion) = congestion {
+            tracing::debug!(
+                "Channel congestion metrics - Attempts: {}, Blocked attempts: {}  ({:.1}% congestion)",
+                congestion.attempts,
+                congestion.blocking_attempts,
+                congestion.congestion_ratio(),
+            );
+        }
+
+        tracing::debug!("call trace: {:?}", progress.accumulated_durations());
+
         self.queue.write_batch(&mut wtxn, processing_batch, &ids)?;
 
         #[cfg(test)]