ss command from iproute2 package ( http://linux-net.osdl.org/index.php/Iproute2
)
Problem with /proc/net/tcp is its quadratic time O(N^2) to output N lines...
I could see where that might be a problem.
Rick, could you add this part in your patch, and add my Sign-off-by ?
My pleasure.
I have a small test program for the tcp_info bit - where do I go to find
how the inet diag stuff works?
ss state listen
hpcpc103:~# ss --version
ss utility, iproute2-ss070313
hpcpc103:~# ss state listen
ss: no socket states to show with such filter.
hpcpc103:~# ss --all
State Recv-Q Send-Q Local Address:Port Peer
Address:Port
LISTEN 0 128 *:sunrpc *:*
LISTEN 0 128 *:auth *:*
LISTEN 0 128 :::ssh :::*
LISTEN 0 20 127.0.0.1:smtp *:*
LISTEN 0 128 *:42137 *:*
BTW, what do people think about doing the same thing with the rxqueue
and txqueue's of netstat output?
I dont understand this question, I thought your patch already handled this
(for the txqueue, since rxqueue is already there), as netstat uses
/proc/net/tcp (unfortunatly)
Well, it doesn't seem to be the case. This is from the same system as
the ss output above:
hpcpc103:~# netstat -an | grep LISTEN
tcp 0 0 0.0.0.0:111 0.0.0.0:* LISTEN
tcp 0 0 0.0.0.0:113 0.0.0.0:* LISTEN
tcp 0 0 127.0.0.1:25 0.0.0.0:* LISTEN
tcp 0 0 0.0.0.0:42137 0.0.0.0:* LISTEN
tcp6 0 0 :::22 :::* LISTEN
unix 2 [ ACC ] STREAM LISTENING 5666 /var/run/acpid.socket
I thought I saw some other code in there when I was stumbling around.
rick
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