From 42fef7257ddceaca42086d8f6b75a19e61cbf68d Mon Sep 17 00:00:00 2001 From: Giulio Fidente Date: Mon, 8 Feb 2016 23:54:54 +0100 Subject: Increase default netdev_max_backlog to 10x It has been observed that on large clouds the netdev backlog buffer might overflow. This change increases the default by ten times. The /proc/net/softnet_stat file contains a counter in the 2nd column that is incremented when the netdev backlog queue overflows. If this value is incrementing over time, then netdev_max_backlog needs to be increased [1]. [1]. https://bugzilla.redhat.com/show_bug.cgi?id=1283676 Change-Id: Iec12324fd3a24e8b608b1e1849c270cc24cb0e60 --- puppet/hieradata/common.yaml | 2 ++ 1 file changed, 2 insertions(+) (limited to 'puppet/hieradata') diff --git a/puppet/hieradata/common.yaml b/puppet/hieradata/common.yaml index 7a5e54d8..98cec364 100644 --- a/puppet/hieradata/common.yaml +++ b/puppet/hieradata/common.yaml @@ -31,6 +31,8 @@ sysctl_settings: value: 0 net.ipv6.conf.default.autoconf: value: 0 + net.core.netdev_max_backlog: + value: 10000 nova::rabbit_heartbeat_timeout_threshold: 60 neutron::rabbit_heartbeat_timeout_threshold: 60 -- cgit 1.2.3-korg