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Flume server loss UDP packets

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Flume server loss UDP packets

New Contributor

On one of the flume server I see a great loss of UDP packets at rush hour.

DNS server logs collected in syslog format on this server.
13% receive errors. "netstat -us".

 

OS - centos 6.6, kernel 2.6.32-504.el6.x86_64, 4G RAM, 2CPU(s)
load average 0-2, charge memory - 60% max, load network - 70% max.

 

I made to optimize the kernel sysctl.conf
net.core.rmem_max
net.core.netdev_max_backlog
net.ipv4.udp_rmem_min
net.ipv4.udp_wmem_min

these paramters are maximized
but % of "udp receive errors" does not change.