nominatim: chef up kernel scheduler tuning

[chef.git] / roles / jakelong.rb

diff --git a/roles/jakelong.rb b/roles/jakelong.rb
index b164b6c893ab461d427b4fe39ff8bd3a5bd32a08..c180690b1938fdd996526b8b998157d4b42853f1 100644 (file)
--- a/roles/jakelong.rb
+++ b/roles/jakelong.rb
@@ -26,8 +26,32 @@ default_attributes(
     :cache_mem => "650 MB",
     :cache_dir => "coss /store/squid/coss-01 15000 block-size=8192 max-size=262144 membufs=30"
   },
+  :sysctl => {
+    :kvm => {
+      :comment => "Tuning for KVM guest",
+      :parameters => { 
+        "kernel.sched_min_granularity_ns" => 10000000,
+        "kernel.sched_wakeup_granularity_ns" => 15000000
+      }
+    }
+  },
+  :sysfs => {
+    :hdd_tune => {
+      :comment => "Tune the queue for improved performance",
+      :parameters => {
+        "block/xvda/queue/nr_requests" => "128",
+        "block/xvda/queue/scheduler" => "deadline"
+      }
+    }
+  },
   :tilecache => {
-    :tile_parent => "sanfrancisco.render.openstreetmap.org"
+    :tile_parent => "sanfrancisco.render.openstreetmap.org",
+    :tile_siblings => [
+      "nadder-01.openstreetmap.org",
+      "nadder-02.openstreetmap.org",
+      "nepomuk.openstreetmap.org",
+      "tabaluga.openstreetmap.org"
+    ]
   }
 )