From 1e6b35cff075464992deb60c7e4abe4031596bfe Mon Sep 17 00:00:00 2001
From: Grant Slater <git@firefishy.com>
Date: Sat, 8 Mar 2014 17:37:53 +0000
Subject: [PATCH 1/1] tile: Kernel CPU scheduler preempt tuning

---
 roles/tile.rb | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/roles/tile.rb b/roles/tile.rb
index f24b1ff64..5af10b8b1 100644
--- a/roles/tile.rb
+++ b/roles/tile.rb
@@ -44,6 +44,13 @@ default_attributes(
       :parameters => {
         "net.core.somaxconn" => 10000
       }
+    },
+    :kernel_scheduler_tune => {
+      :comment => "Tune kernel scheduler preempt",
+      :parameters => {
+        "kernel.sched_min_granularity_ns" => 10000000,
+        "kernel.sched_wakeup_granularity_ns" => 15000000
+      }
     }
   },
   :tile => {
-- 
2.43.2