From 9851fde2fa87950ed689439c167c708c38dd568c Mon Sep 17 00:00:00 2001
From: John Sully <john@csquare.ca>
Date: Thu, 4 Jun 2020 01:29:17 -0400
Subject: [PATCH] Add latency marker for process changes phase for FLASH

Former-commit-id: 61e20b025d45b0af8ed60aab96246b30e4d0ed3d
---
 src/server.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/server.cpp b/src/server.cpp
index 8122b0da0..c8399ed27 100644
--- a/src/server.cpp
+++ b/src/server.cpp
@@ -2393,10 +2393,14 @@ void beforeSleep(struct aeEventLoop *eventLoop) {
     // note: we also copy the DB pointer in case a DB swap is done while the lock is released
     std::vector<redisDb*> vecdb;    // note we cache the database pointer in case a dbswap is done while the lock is released
     if (!fFirstRun) {
+        mstime_t storage_process_latency;
+        latencyStartMonitor(storage_process_latency);
         for (int idb = 0; idb < cserver.dbnum; ++idb) {
             vecdb.push_back(g_pserver->db[idb]);
             g_pserver->db[idb]->processChanges();
         }
+        latencyEndMonitor(storage_process_latency);
+        latencyAddSampleIfNeeded("storage-process-changes", storage_process_latency);
     } else {
         fFirstRun = false;
     }