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  #1 (permalink)  
Old 12-18-2008
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Join Date: Mar 2005
Posts: 49
UDP errors

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
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  #2 (permalink)  
Old 12-20-2008
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Join Date: Mar 2006
Location: Ahmedabad
Posts: 125
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.
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