From 137e3f7a43f0429098b8878a00db449fa85fea97 Mon Sep 17 00:00:00 2001
From: Jon San Miguel <jon.sanmiguel@samsara.com>
Date: Thu, 27 Sep 2018 19:15:36 -0700
Subject: [PATCH] Improve multitask performance

---
 lib/rake/task.rb | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/lib/rake/task.rb b/lib/rake/task.rb
index c56118f01..7b7057ce5 100644
--- a/lib/rake/task.rb
+++ b/lib/rake/task.rb
@@ -248,7 +248,8 @@ def invoke_prerequisites_concurrently(task_args, invocation_chain)# :nodoc:
           r.invoke_with_call_chain(prereq_args, invocation_chain)
         end
       end
-      futures.each(&:value)
+      # Iterate in reverse to improve performance related to thread waiting and switching
+      futures.reverse_each(&:value)
     end
 
     # Format the trace flags for display.