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use perl dbm code.

corresponding slots in os_info and images, causing truncation.

appealing to me. :-)

of all people in projects that are approved to use widearea/ron nodes
(pcremote_ok!=NULL). Note, I am combining all kinds of widearea nodes
into one email list. Might need to create per-type lists, but I hope
not.

or not. Handy since the vname indicates where the node is. Of course,
this needs to be better someday, like maybe real geographic info.

1. Client: add "NAK avoidance."  We track our (and others, via snooping) block
   requests and avoid making re-requests unless it has been "long enough."

2. Server: more aggressive merging of requests in the work queue.  For every
   new request, look for any overlap with an existing entry.

3. Server: from Leigh: first cut at dynamic rate adjustment.  Can be enabled
   with -D option.

4. Both: change a lot of the magic constants into runtime variables so that
   they can be adjusted on the command line or via the event interface (see
   below).

5. Add code to do basic validatation of incoming packets.

6. Client: randomization of block request order is now optional.

7. Client: startup delay is optional and specified via a parameter N which
   says "randomly delay between 0 and N seconds before attempting to join."

8. Both: add a new LEAVE message which reports back all the client stats to
   the server (which logs them).

9. Both: attempt to comment some of the magic values in decls.h.

10. Both: add cheezy hack to fake packet loss.  Disabled by default, see
   the GNUmakefile.  This code is coming out right after I archive it with
   this commit.

11. Add tracing code.  Frisbee server/client will record a number of
   interesting events in a memory buffer and dump them at the end.  Not
   compiled in by default, see the GNUmakefile (NEVENTS) for turning this on.

12. Not to be confused with the events above, also added testbed event system
   code so that frisbee clients can be remotely controlled.  This is a hack
   for measurement purposes (it requires a special rc.frisbee in the frisbee
   MFS).  Allows changing of all sorts of parameters as well as implementing
   a crude form of identification allowing you to start only a subset of
   clients.  Interface is via tevc with commands like:
	tevc -e testbed,frisbee now frisbee start maxclients=5 readahead=5
	tevc -e testbed,frisbee now frisbee stop exitstatus=42
   Again, this is not compiled in by default as it makes the client about
   4x bigger.  See the GNUmakefile for turning it on.

1. The big one is from Leigh: multithreading the unzipper so that
   decompression overlaps with disk IO.  Also added the '-n' "no threads"
   option for comparison purposes.

2. Eh...guess that's it for imagezip/unzip.  Oh wait, mike fixed a comment!

Set mailgap to 15 seconds, and wait a second on startup before sending mail so that the timeouts all come in one message. And don't clean up my stated.pid file if I'm a forked child of the real daemon.

Also made the image and osid shared so that it works for any emulab user
who swaps in an experiment. Before this, swapping an nse expt would have
failed but since no uses it, we never had any problem!

mention tipserv1 as well as ops for setting up serial lines

bytes of framing+CRC

Add pcapper.noevents target to Makefile to build without event system

set the login shell to /sbin/login. Minor complications for preserving
the existing shell of users on both boss/ops, but no big deal.

Dave and RON node installation.

library.
Add -b option to explicitly turn on broadcast mode (client and
server), and fiddle with options and network init slightly so that
I can do simple unicast experiments between two nodes.

On Sat, 16 Nov 2002, Jay Lepreau wrote:

> Looks great.  Go ahead and check it in and install it.
>
> Might be good to say the stuff inthe scaling/accuracy page
> is from the OSDI paper.
>
> In the tutorial, might s/falling back in real time/falling behind real time/