From 7f68765981cfebd2dd85c6ab951549e67b40fe03 Mon Sep 17 00:00:00 2001
From: John Sully <john@csquare.ca>
Date: Mon, 12 Apr 2021 04:44:52 +0000
Subject: [PATCH] Allow prefetch even with a single thread

Former-commit-id: 2e68821b330a6bae8a352e37c3da643d504b2ce3
---
 src/networking.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/networking.cpp b/src/networking.cpp
index 36eb033aa..574a8bc6c 100644
--- a/src/networking.cpp
+++ b/src/networking.cpp
@@ -2370,7 +2370,7 @@ void parseClientCommandBuffer(client *c) {
 
         /* Prefetch outside the lock for better perf */
         if (g_pserver->prefetch_enabled && cqueriesStart < c->vecqueuedcmd.size() &&
-            (g_pserver->m_pstorageFactory || aeLockContested(cserver.cthreads/2)) && !GlobalLocksAcquired()) {
+            (g_pserver->m_pstorageFactory || aeLockContested(cserver.cthreads/2) || cserver.cthreads == 1) && !GlobalLocksAcquired()) {
             auto &query = c->vecqueuedcmd.back();
             if (query.argc > 0 && query.argc == query.argcMax) {
                 c->db->prefetchKeysAsync(c, query);