From ea2bbfb5c1721c345910d010d67c689970241011 Mon Sep 17 00:00:00 2001
From: John Sully <john@csquare.ca>
Date: Wed, 7 Apr 2021 17:30:59 +0000
Subject: [PATCH] Fix issue where GC is not free'd until a BGSAVE

Former-commit-id: 38523e6b508cf5f4b40c178dfe98554abea8f6bd
---
 src/server.cpp | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/src/server.cpp b/src/server.cpp
index bbee218ac..6d297c937 100644
--- a/src/server.cpp
+++ b/src/server.cpp
@@ -2450,6 +2450,16 @@ int serverCron(struct aeEventLoop *eventLoop, long long id, void *clientData) {
             g_pserver->ilockRingHead = 0;
     });
 
+    run_with_period(10) {
+        // Server threads don't free the GC, but if we don't have a
+        //  a bgsave or some other async task then we'll hold onto the
+        //  data for too long
+        g_pserver->asyncworkqueue->AddWorkFunction([]{
+            auto epoch = g_pserver->garbageCollector.startEpoch();
+            g_pserver->garbageCollector.endEpoch(epoch);
+        });
+    }
+
     g_pserver->cronloops++;
     return 1000/g_pserver->hz;
 }