From 4c0dc9d52e59abc0cedc1898d3ab495bd13998ee Mon Sep 17 00:00:00 2001
From: Watson <watson1978@gmail.com>
Date: Tue, 6 Feb 2024 06:08:05 +0900
Subject: [PATCH] Set the using CPU cores limit to compile

---
 ext/ilios/extconf.rb | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/ext/ilios/extconf.rb b/ext/ilios/extconf.rb
index d3aada6..355b857 100644
--- a/ext/ilios/extconf.rb
+++ b/ext/ilios/extconf.rb
@@ -9,18 +9,22 @@
 have_func('malloc_usable_size')
 have_func('malloc_size')
 
+MAX_CORES = 8
+
 def num_cpu_cores
   cores =
     begin
       if RUBY_PLATFORM.include?('darwin')
-        Integer(`sysctl -n hw.ncpu`, 10) - 1
+        Integer(`sysctl -n hw.ncpu`, 10)
       else
-        Integer(`nproc`, 10) - 1
+        Integer(`nproc`, 10)
       end
     rescue StandardError
       2
     end
-  cores.positive? ? cores : 1
+
+  return 1 if cores <= 0
+  cores >= 7 ? MAX_CORES : cores
 end
 
 module LibuvInstaller