UDP errors

UNIX for Advanced & Expert Users
1

Hi,

I can see "udpInOverflows" errors when I execute 'netstat -s' on my Solaris box.
The number of errors are small - about 40.
e.g.
$ netstat -s|grep udp
UDP udpInDatagrams =1249190732 udpInErrors = 0
udpOutDatagrams =31663030 udpOutErrors = 0
tcpInErrs = 0 udpNoPorts =15060056
udpInCksumErrs = 0 udpInOverflows = 40
udpInCksumErrs = 0 udpInOverflows = 0

  1. Could this mean a network connection issue ?
  2. Does this output shows the accumulated set of stats over the period of its uptime?
  3. When this stats indicators get reset - only during the reboot ?

Thanks in advance!
Chaandana

2

It means application is slow in processing of that heavy UDP requests/data. There can be 3 solutions
1> Identify if there is flooding on your application; snoop, tcpdump or firewall
2> Increase kernel socket buffer size; ndd for Solaris and sysctl for Linux
3> Increase processing Threads/Child in your application.