* Add XMLRPC interface for template swapin,stoprun,startrun,swapout and
  add the appropriate wrappers to the script_wrapper on ops.

* Allow parameter descriptions in NS files. This is probably not in its
  final form since its a bit confusing as to what has priority; something
  in the NS file or a metadata item. Anyway, you can do this in your NS
  file:

	$ns define-template-parameter GUID "0/0" "The GUID to be analyzed"

  The rules are currently that the NS file description has priority and
  is copied to child templates, unless the user has modified a description
  via the web interface, in which case the NS file description is ignored.
  I know, sounds awful, but for the most part people are going to use the
  NS file anyway.

* Add "clear" option when starting a new experiment run; the per
  experiment DB at the logholes are cleared. Note that this is *not* the
  default behaviour; you have to either check the checkbox on the web form
  or use the -c option to the script wrapper, or clear=yes if talking
  directly to the XMLRPC server.

* Fix up how email is generated for template_swapin and template_create,
  so that Kevin can debug tblog/tbreport stuff, but also so that we maintain
  mail logs as before. I have made some improvements to libaudit so as to
  centralize the mail goo, and avoid duplicating all that stuff.

* Minor fixes to the program agent so that the new environment strings are
  sent before the program agent exits and reloads them!

* Other minor little things.

Reverted changes to time format. Added a 'SENSOR_DETAIL' and 'SENSOR_COMPLETE" logging options. 'SENSOR' should now be used for high level information, 'SENSOR_DETAIL' should be used for medium level information, and 'SENSOR_COMPLETE' should be used for low-level information. If SENSOR_DETAIL logging is turned on, then SENSOR logging is also turned on. If SENSOR_COMPLETE logging is turned on, then SENSOR_DETAIL and SENSOR loggin is also turned on. All three of these levels use the 'SENSOR' prefix when outputting logging lines.

detaching from the parent.

Also improve the logonly mode by adding a nodelete option, to retain
the logfile after the email is sent.

Minor improvements to the interface.

next sync (similar to how it works with the archive directive).

Streamlined logging so that only two fprintf statements are necessary. One for the prefix and one for the variable argument body. This is down from the 5 it was earlier. Also changed the format of timestamps to me more useful. Timestamps are now in a secs:millis format rather than a floating point number. And secs is seconds since the beginning of the run (rounded to the nearest second) rather than seconds since epoch.

rather than signed ones.

Changed order of input file to <src> <dst> <bw> <delay> <loss> to bring it in line with Kevin's request.

Changed logCleanup() so that it uses a switch statement rather than a series of if statements. Now if there are more than one flags selected, only the first one encountered will be printed as a prefix. This should make things run faster.

up the max write size to 8k (we still write the correct number of
bytes if the app makes a write bigger than this, we just do it in
a couple calls to write().)

Added an extra field as a placeholder for loss in the initial-conditions format as per Mike's request.

Use '-' for stdout, e.g.:
	init-elabnodes.pl -o - tbres planetmikelab >> foo

Added initial conditions handling to monitor/stub. This should also solve the what does throughput mean when the connection is delay-dominated? problem. Now there are two kinds of bandwidth measurements that the magent can send back to the monitor. There is a throughput measurement which is tentative and which is applied only if it is greater than the last measurement. And there is a bandwidth measurement that is authoritative and is applied regardless.

which, oddly enough, ensures that update does not return immediately.

with a simple malloc()ed buffer, which cut about 20% off our CPU
usage.

Note, this could probably even be put into a statically-sized
structrure, but Jon would have to verify this.

out to burn too much CPU.

and gprof.out go to a place loghole will find them.

Change where the TMCCVNODEID environment variable gets setup.  Since
vnodesetup is the highest common execution point in the chain (for either
initial vserver startup, or subsequent reboot), this is the place to put it.
The previous stages don't need it, but just putting it in rc.vinit excludes
it from getting set during initial setup and boot.

Change types of latitude and longitude columns in widearea_nodeinfo to
float (instead of float(6,5)) to fix problem with values getting adjusted
improperly during insert.  Apparently the definition of the float(n,m)
type is non-standard, and has changed since sql 3.x.  Regular float
columns will do fine here.

Add patch to modify Mysql.pm to allow setting the "InactiveDestroy" in
the underlying DB handle.  Also avoid disconnecting the file handle
explistly on DESTROY as that will be taken care of in the DESTROY
method for the the DB handle.

Override perl version of fork() to set InactiveDestroy in all open
database handles in the child so that it won't send a disconnect when
the handle is destroyed as this will also close the database handle
for the parent.  It will also call tblog_new_child_process in the
child process to properly inform tblog of the new process. This will
be a NoOp if the libtblog module is not loaded.

things (like finishing writing the gmon.out file when profiling) that
don't happen when you control-c or kill the program.

It's not perfect - it doesn't rebuild the dependancy file at the
right time, but it should be good enough for our purposes.

* Export the above via the XMLRPC interface and add a wrapper function
  to the script_wrapper. This allows you do to this on ops:

	cd /proj/testbed/templates/10023/1
        Edit some files
        template_commit

  Which creates a new template, using the current directory to infer
  the template. Otherwise, provide the template GUID on the command line.
  Hmm, maybe this should be called template_modify? Either way, the
  name does not quite match

* Export template_export via the XMLRPC wrapper. This allows you to
  export a template (instance) record from the command line on ops.


	cd /proj/testbed/templates/10023/1
        template_export -i 12
        Exported to /proj/testbed/export/10000/3/12

  Which exports the template record for instance number 12. Again, the
  GUID is infered, but you can specify one on the command line. The export
  directory is printed so you know where it went. Note that export does
  *not* populate a DB on ops with the old DB data.

A node update bugfix and a change to the way nodes with more than two
changed attributes are handled.  A single message is now sent detailing
which nodes need to be looked at, and such nodes to not stop the rest from
updating normally during that run.  Previously the nodes with multiple changes
had to be handled first, then the update script had to be run after that to
catch everything.

Cleaned up and added a couple of lines of comment about what 'Send' and 'Ack' really mean. All that really matters is distinguishing between outgoing packets and incoming packets. 'Send' and 'Ack' are unfortunate names reflecting my previous muddled thinking about this. So for 'Send' read outgoing, and for 'Ack', read incoming. A low-priority task is to change the naming to reflect this semantic change.

didn't get one or more packets from libpcap. I have one trace on
PlanetLab that does this a lot, so it could be a sign of a problem -
like not checking libpcap freqeuently enough. A pcapper process
running at the same time did get the packets...

Change the mode used to create log files to allow world read access.
We have determined that there really isn't any risk in doing so.  This will
stop rsync/loghole from complaining when transfering data from plab nodes.
It was failing to transfer some log files created as root.

mixed togther, and port registrations are not made. The one case
currently handled is when the syncserver node goes ISUP, but has not
reported its port. In this case, it must be an old image and so we
place a port registration in for it.

A user can set the duration of a measurement set with the -d option in
testsend.pl and manager.pl . The change occurs for the given number of
seconds. After expiration, the old measurement period is used. The logic
behind when/how to change is fairly complex - see bgmon.pl for more details.

bump up plab rootball version

OLD:

 * Delay specified in ticks.
 * Drop performed as packets were leaving the delay queue (i.e., leaving
   dummynet).  This is more accurate in terms of calculating time spent
   in dummynet, and can be used with all strategies of BW/delay shaping
   (constant values, distributions, table lookup), but required that
   ultimately-dropped packets get put on the BW queue, changing the timing
   of things.

NEW:

 * Delay specified in milliseconds.
 * Drops perfromed as packets enter the bandwidth queue (i.e., arrive
   in dummynet).  Here drops are based on estimates of how long a packet
   would spend in dummynet and thus only works with constant delay/BW
   shaping characteristics, but does more accurately reflect queuing
   behavior.

The estimate is done by looking at the length in bytes of the bandwidth
queue (including the candidate packet) for the pipe, determining how long
it will take to transmit that many bytes, and then adding the delay value
for the pipe.