From c0e13393bdcedfc10c8488fe0f2570c2466c11e1 Mon Sep 17 00:00:00 2001
From: obdev <obdev@oceanbase.com>
Date: Tue, 25 Oct 2022 17:54:36 +0800
Subject: [PATCH] dynamic adjust net_thread_count

---
 src/observer/ob_srv_network_frame.cpp | 16 +++++++++++++++-
 1 file changed, 15 insertions(+), 1 deletion(-)

diff --git a/src/observer/ob_srv_network_frame.cpp b/src/observer/ob_srv_network_frame.cpp
index 48d1c2c4f2..b9edde636a 100644
--- a/src/observer/ob_srv_network_frame.cpp
+++ b/src/observer/ob_srv_network_frame.cpp
@@ -59,7 +59,21 @@ static bool enable_new_sql_nio()
 
 static int get_default_net_thread_count()
 {
-  return max(6, get_cpu_num() / 8);
+  int cnt = 1;
+  int cpu_num = get_cpu_num();
+
+  if (cpu_num <= 4) {
+    cnt = 2;
+  } else if (cpu_num <= 8) {
+    cnt = 3;
+  } else if (cpu_num <= 16) {
+    cnt = 5;
+  } else if (cpu_num <= 32) {
+    cnt = 7;
+  } else {
+    cnt = max(8, get_cpu_num() / 6);
+  }
+  return cnt;
 }
 
 int ObSrvNetworkFrame::init()
-- 
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