Alexandros Kosiaris has uploaded a new change for review.

  https://gerrit.wikimedia.org/r/322633

Change subject: ganeti: Disable KSM
......................................................................

ganeti: Disable KSM

Looking at the graphs in
https://grafana.wikimedia.org/dashboard/db/ganeti, it seems we aren't
really gaining much by enabling KSM. Given that KSM also is prone to
some side-channel attacks (https://eprint.iacr.org/2013/448.pdf),
disable it and reevaluate the usage

Change-Id: I514db33e2bc658454928c6eb741eb6bd57098dfe
---
M modules/ganeti/manifests/kvm.pp
1 file changed, 1 insertion(+), 1 deletion(-)


  git pull ssh://gerrit.wikimedia.org:29418/operations/puppet 
refs/changes/33/322633/1

diff --git a/modules/ganeti/manifests/kvm.pp b/modules/ganeti/manifests/kvm.pp
index 47ff653..2bf8acd 100644
--- a/modules/ganeti/manifests/kvm.pp
+++ b/modules/ganeti/manifests/kvm.pp
@@ -19,7 +19,7 @@
 
     sysfs::parameters { 'ksm':
         values => {
-            'kernel/mm/ksm/run'             => '1',
+            'kernel/mm/ksm/run'             => '0',
             'kernel/mm/ksm/sleep_millisecs' => '100',
         },
     }

-- 
To view, visit https://gerrit.wikimedia.org/r/322633
To unsubscribe, visit https://gerrit.wikimedia.org/r/settings

Gerrit-MessageType: newchange
Gerrit-Change-Id: I514db33e2bc658454928c6eb741eb6bd57098dfe
Gerrit-PatchSet: 1
Gerrit-Project: operations/puppet
Gerrit-Branch: production
Gerrit-Owner: Alexandros Kosiaris <[email protected]>

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