From 89838e46bf26347b547f63e330a010adf118a9b9 Mon Sep 17 00:00:00 2001
From: Christian Schwarz <christian@neon.tech>
Date: Fri, 7 Feb 2025 02:30:15 +0100
Subject: [PATCH] just not instrumented, validate that again, should be
 equivalent with f9528ec9801f3c5ee897987b2d8725d2ef819b47

---
 pageserver/src/page_service.rs | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/pageserver/src/page_service.rs b/pageserver/src/page_service.rs
index e577b4221d..dc0bbb3afb 100644
--- a/pageserver/src/page_service.rs
+++ b/pageserver/src/page_service.rs
@@ -1076,6 +1076,13 @@ impl PageServerHandler {
 
             // what we want to do
             let flush_fut = pgb_writer.flush();
+            // metric for how long flushing takes
+            let flush_fut = match flushing_timer {
+                Some(flushing_timer) => {
+                    futures::future::Either::Left(flushing_timer.measure(flush_fut))
+                }
+                None => futures::future::Either::Right(flush_fut),
+            };
             // do it while respecting cancellation
             let _: () = async move {
                 tokio::select! {