Stickybit

Even old dogs can still learn about TCP and UDP stacks...

Skrivet av Filip Körling den 2009-12-11 | 1 Kommentarer

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Besides netstat, lsof and tcpdump I've not got a new tool in the collection. Christoffer showed me the ss command the other day while we were trying to understand the load on the DesignSync server.

Slightly different than netstat and seems to be considerably faster, ss can provide information about:

  • All TCP sockets.
  • All UDP sockets.
  • All established ssh / ftp / http / https connections.
  • All local processes connected to X server.
  • All the tcp sockets in state FIN-WAIT-1 and much more.


See http://www.cyberciti.biz/tips/linux-investigate-sockets-network-connections.html for more info and examples.


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  • Test on 11/05/2010 10:02pm
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  • Looks useful. Perhaps it can help me to track down my connections which are stalled in FIN_WAIT2 + CLOSE_WAIT....

    Posted by Anders Westrup, 29/01/2010 3:41pm (7 månader ago)

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