From: Sébastien Han <sebastien.han@enovance.com>
Date: Thu, 15 Jan 2015 10:08:57 +0000 (+0100)
Subject: Decrease vfs cache pressure
X-Git-Tag: v1.0.0~271^2
X-Git-Url: http://git-server-git.apps.pok.os.sepia.ceph.com/?a=commitdiff_plain;h=refs%2Fpull%2F185%2Fhead;p=ceph-ansible.git

Decrease vfs cache pressure

On OSD servers we want to keep as much inodes and dentries in memory as
we can.

Signed-off-by: Sébastien Han <sebastien.han@enovance.com>
---

diff --git a/roles/ceph-common/defaults/main.yml b/roles/ceph-common/defaults/main.yml
index 40733433c..94335f9cd 100644
--- a/roles/ceph-common/defaults/main.yml
+++ b/roles/ceph-common/defaults/main.yml
@@ -128,3 +128,4 @@ os_tuning_params:
   - { name: kernel.pid_max, value: 4194303 }
   - { name: fs.file-max, value: 26234859 }
   - { name: vm.zone_reclaim_mode, value: 0 }
+  - { name: vm.vfs_cache_pressure, value: 50 }