1. 22 Jun, 2005 1 commit
    • Leigh B. Stoller's avatar
      Added my simplistic link tracing and monitoring. Example usage and · 7942119e
      Leigh B. Stoller authored
      some details can be found in the advanced tutorial that I wrote up.
      See this link:
      
      http://www.emulab.net/tutorial/docwrapper.php3?docname=advanced.html#Tracing
      
      The basic idea is that each virt_lan entry gets a couple of new slots
      describing the type of tracing that is desired.
      
        traced tinyint(1) default '0',
        trace_type enum('header','packet','monitor') NOT NULL default 'header',
        trace_expr tinytext,
        trace_snaplen int(11) NOT NULL default '0',
        trace_endnode tinyint(1) NOT NULL default '0',
      
      There is a new physical table called "traces" that is a little bit
      like the current delays table. A new tmcd command returns the trace
      configuration to the client nodes (tmcd/common/config/rc.trace).
      
      The delays table got a new boolean called "noshaping" that tells the
      delay node to bridge, but not set up any pipes. This allows us to
      capture traffic at the delay node, but without much less overhead on
      the packets.
      
      The pcapper got bloated up to do packet capture and more event stuff.
      I also had to add some mutex locking around calls into the pcap
      library and around malloc, since the current setup used linuxthreads,
      which is not compatable with the standard libc_r library. I was
      getting all kinds of memory corruption, and I am sure that if someone
      breathes on the pcapper again, it will break in some new way.
      7942119e
  2. 13 Jan, 2005 1 commit
  3. 04 Jul, 2002 1 commit
  4. 24 Oct, 2001 2 commits
    • Leigh B. Stoller's avatar
    • Leigh B. Stoller's avatar
      Add swappable and priority bits to experiment creation form. Not used, · 28c1968f
      Leigh B. Stoller authored
      but simply entered into the DB record for the experiment until we know
      what to do with them. Add to batchexp script arguments, since all that
      stuff is done outside the web interface. Add a swapexp perl script to
      swap an an experiment in/out form the command line. Add web links on
      the Experiment Information page to do this from the web interface. A
      bunch of locking changes. Previously expt_terminating in the
      experiment record prevented multiple calls to terminate an experiment,
      but now we have a more general locking problem with
      start,swapin,swapout, and terminate, so change expt_terminating to
      expt_locked (still a datetime field) and add locking to all of
      startexp, swapexp, and endexp. Note that batch experiments cannot be
      swapped yet because of locking issues still to be resolved. Minor
      cleanup in tbreport to make email message look better.
      28c1968f
  5. 12 Apr, 2001 1 commit