nadder: Decrease scheduler queue depth to improve latency

[chef.git] / roles / nadder-02.rb

diff --git a/roles/nadder-02.rb b/roles/nadder-02.rb
index c2315ba9c7d02e88f36eb4468e9ae280ede2d9af..07c2c71457fcb2468cfc76d305cef40ca2c0e165 100644 (file)
--- a/roles/nadder-02.rb
+++ b/roles/nadder-02.rb
@@ -18,8 +18,8 @@ default_attributes(
     :hdd_tune => {
       :comment => "Tune the queue for improved performance",
       :parameters => {
-        "block/vda/queue/nr_requests" => "512",
-        "block/vdb/queue/nr_requests" => "512",
+        "block/vda/queue/nr_requests" => "64",
+        "block/vdb/queue/nr_requests" => "64",
         "block/vda/queue/scheduler" => "deadline",
         "block/vdb/queue/scheduler" => "deadline"
       }
@@ -30,7 +30,13 @@ default_attributes(
     :cache_dir => "coss /store/squid/coss-01 128000 block-size=8192 max-size=262144 membufs=80"
   },
   :tilecache => {
-    :tile_parent => "provo.render.openstreetmap.org"
+    :tile_parent => "provo.render.openstreetmap.org",
+    :tile_siblings => [
+      "nadder-01.openstreetmap.org",
+      "jakelong.openstreetmap.org",
+      "nepomuk.openstreetmap.org",
+      "lurien.openstreetmap.org"
+    ]
   }
 )