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
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@ -31,6 +31,8 @@ sysctl_settings:
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value: 0
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net.ipv6.conf.default.autoconf:
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value: 0
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net.core.netdev_max_backlog:
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value: 10000
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nova::rabbit_heartbeat_timeout_threshold: 60
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neutron::rabbit_heartbeat_timeout_threshold: 60
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