Updated avail_cores calculation to handle Apple M1 or ARM processors

Author: cheungtitus

discourse-setup

@@ -258,7 +258,8 @@ scale_ram_and_cpu() {
     avail_cores=`sysctl hw.ncpu | awk '/hw.ncpu:/ {print $2}'`
   else
     avail_gb=$(check_linux_memory)
-    avail_cores=$((`awk '/cpu cores/ {print $4;exit}' /proc/cpuinfo`*`sort /proc/cpuinfo | uniq | grep -c "physical id"`))
+    threads_per_core=$(lscpu | awk 'BEGIN {FS=":"} /Thread\(s\) per core/ {print $2}')
+    avail_cores=$((`lscpu | awk '/^CPU\(s\)/ {print $2}'`/${threads_per_core}))
   fi
   echo "Found ${avail_gb}GB of memory and $avail_cores physical CPU cores"