From: Grant Slater <git@firefishy.com>
Date: Mon, 5 Aug 2013 10:20:51 +0000 (+0100)
Subject: gorynych: Tune md sync performance so as not to kill system performance
X-Git-Url: https://git.openstreetmap.org/chef.git/commitdiff_plain/cd410cd0dd1449f3a96831253524787d8529e590?hp=57b0b80c7359daace489fe75aee4277f883f528a;ds=sidebyside

gorynych: Tune md sync performance so as not to kill system performance
---

diff --git a/roles/gorynych.rb b/roles/gorynych.rb
index 9d1119a33..c07d70592 100644
--- a/roles/gorynych.rb
+++ b/roles/gorynych.rb
@@ -14,6 +14,15 @@ default_attributes(
       }
     }
   },
+  :sysfs => {
+    :md_tune => {
+      :comment => "Tune the md sync performance so as not to kill system performance",
+      :parameters => {
+        "block/md0/md/sync_speed_min" => "10",
+        "block/md0/md/sync_speed_max" => "10000"
+      }
+    }
+  },
   :squid => {
     :cache_mem => "5800 MB",
     :cache_dir => "coss /store/squid/coss-01 128000 block-size=8192 max-size=262144 membufs=80"