Add KVM guest sysctl tuning

diff --git a/roles/jakelong.rb b/roles/jakelong.rb
index 5338778e0b58d1723c24ceeee788784b2f343089..ee7a14c20db4d44297cb1e8bd1f98f74b988bf10 100644 (file)
--- a/roles/jakelong.rb
+++ b/roles/jakelong.rb
@@ -26,6 +26,15 @@ 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",

diff --git a/roles/nadder-01.rb b/roles/nadder-01.rb
index d596a1a6e54f849a87ea8f3befc071ce1041dad0..235575c7ec7f8ef59218270a5d9c90e9d59e80c1 100644 (file)
--- a/roles/nadder-01.rb
+++ b/roles/nadder-01.rb
@@ -14,6 +14,15 @@ default_attributes(
       }
     }
   },
+  :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",

diff --git a/roles/nadder-02.rb b/roles/nadder-02.rb
index 07c2c71457fcb2468cfc76d305cef40ca2c0e165..ee98b08a58de2dfbb789d53cd0f7b8a1235555df 100644 (file)
--- a/roles/nadder-02.rb
+++ b/roles/nadder-02.rb
@@ -14,6 +14,15 @@ default_attributes(
       }
     }
   },
+  :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",

diff --git a/roles/nepomuk.rb b/roles/nepomuk.rb
index 3c7d3ccf9340c88ad8a58c0f2e3329a50ac9c7c5..b852f9a9446a25905d650105230e4b4ef45f10d0 100644 (file)
--- a/roles/nepomuk.rb
+++ b/roles/nepomuk.rb
@@ -22,6 +22,15 @@ default_attributes(
       }
     }
   },
+  :sysctl => {
+    :kvm => {
+      :comment => "Tuning for KVM guest",
+      :parameters => { 
+        "kernel.sched_min_granularity_ns" => 10000000,
+        "kernel.sched_wakeup_granularity_ns" => 15000000
+      }
+    }
+  },
   :squid => {
     :cache_mem => "7500 MB",
     :cache_dir => "coss /store/squid/coss-01 128000 block-size=8192 max-size=262144 membufs=80"