From: Tom Hughes <tom@compton.nu>
Date: Fri, 31 May 2019 11:12:06 +0000 (+0100)
Subject: Tune scheduler on tile caches
X-Git-Url: https://git.openstreetmap.org/chef.git/commitdiff_plain/664414939e418b88a370ae31d6cff3245322e7bc

Tune scheduler on tile caches
---

diff --git a/roles/tilecache.rb b/roles/tilecache.rb
index a2e595f3b..f45286e37 100644
--- a/roles/tilecache.rb
+++ b/roles/tilecache.rb
@@ -48,6 +48,13 @@ default_attributes(
       :parameters => {
         "vm.swappiness" => "30"
       }
+    },
+    :sched_wakeup => {
+      :comment => "Tune scheduler",
+      :parameters => {
+        "kernel.sched_min_granularity_ns" => "10000000",
+        "kernel.sched_wakeup_granularity_ns" => "15000000"
+      }
     }
   }
 )