[SATLUG] netstat help
h_oudini at hotmail.com
Fri Jan 11 10:53:33 CST 2008
Are there any nestat gurus on the list? We use 'netstat -g' a lot for
verifying subscription to multicast groups, but we find that if we have
a gateway defined in /etc/network/interfaces that the response from
netstat is very slow (a few second per line returned). I've looked at
the source and it seems that the '-g' option tells netstat to get info
from /proc/net/igmp and I can 'cat' that file with no delays, so I
assume that maybe the network libraries that netstat uses must do
something "behind the scenes" when functions from the library are used.
Anyhow, does anyone know what causes the slow response?
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