From 097d5a426a40ed79887f1c7c57db3dc36aa8e1c2 Mon Sep 17 00:00:00 2001
From: Sean Wheller <sean@prepaidmeters.com>
Date: Sat, 10 Aug 2019 19:08:35 +0200
Subject: [PATCH] better calculate number of threads to use

---
 functions.sh | 8 ++++++--
 install.sh   | 6 +++---
 2 files changed, 9 insertions(+), 5 deletions(-)

diff --git a/functions.sh b/functions.sh
index 4ea3a54..6e394fd 100755
--- a/functions.sh
+++ b/functions.sh
@@ -50,9 +50,13 @@ check_cpu () {
 }
 
 calc_threads () {
+	# Each thread needs 2048 byte (2 Megabyte)
+	# Calculate number of threads supported with L3 cache size
+
+	_ENV_THREAD_QTY=$(( ($_ENV_CORE_L3/2048)/1000 ))
 
 	# Affine number of threads for _CPU_CN
-	_COUNTER="$(( $_ENV_CORE-1 ))"
+	_COUNTER="$(( $_ENV_THREAD_QTY-1 ))"
 
 	_ENV_CPU_THREAD_AFFINITY="$(seq -s " " 0 $_COUNTER)"
 
@@ -69,7 +73,7 @@ calc_hugepages () {
                  sudo sysctl -p
          else    
                  # Set value in current env
-                 sudo sysctl -w vm.nr_hugepages="$_ENV_CORE"
+                 sudo sysctl -w vm.nr_hugepages="$_ENV_THREAD_QTY"
                  # Add value to sysctl
                  sudo sysctl -p
          fi
diff --git a/install.sh b/install.sh
index 3ad9883..7521097 100755
--- a/install.sh
+++ b/install.sh
@@ -1,11 +1,11 @@
 #!/bin/bash
 
-_DEBUG=true
+_DEBUG=$1
 
 if $_DEBUG; then
-	set -x
-else
 	set +x
+else
+	set -x
 fi
 
 # Set that user passwdless sudo