From 16919b3ce0983b2856f7b5ab17726ae85cb1a62a Mon Sep 17 00:00:00 2001
From: Tk-Glitch <ti3nou@gmail.com>
Date: Fri, 12 Aug 2022 18:39:00 +0200
Subject: [PATCH] Switch default governor to schedutil on >32 threads machines
 when it's set to ondemand

Ondemand doesn't scale well with that many cores
---
 linux-tkg-config/prepare | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/linux-tkg-config/prepare b/linux-tkg-config/prepare
index 07e7ec7..b20868d 100644
--- a/linux-tkg-config/prepare
+++ b/linux-tkg-config/prepare
@@ -1092,6 +1092,12 @@ _tkg_srcprep() {
     fi
   done
 
+  # Use schedutil instead of ondemand on >32 threads machines
+  if [[ $(nproc) -gt 32 ]] && [ "$_default_cpu_gov" = "ondemand" ]; then
+    warning "The current default governor selected (ondemand) doesn't perform well on >32 threads. Schedutil will be used instead."
+    _default_cpu_gov="schedutil"
+  fi
+
   # default cpu gov
   if [ "$_default_cpu_gov" = "performance" ]; then
     _disable "CPU_FREQ_DEFAULT_GOV_SCHEDUTIL"