From owner-freebsd-stable  Mon Jul  2 22: 0:15 2001
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To: Zack Hobson <zgh+bsd@malfunktion.net>
Cc: freebsd-stable@freebsd.org, Donn Miller <hackr_d@yahoo.com>,
	owner-freebsd-stable@FreeBSD.ORG
Subject: Re: Benchmarking CVSup
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Try this one, it will print the fastest hop first.  The sever with the 
fewest hops might not be the fastest.  This does not mean that fastest to 
answer will produce the quickest downloads, there are too many other 
unknown factors to consider.  Your experience will rule here.  The 
following script will print out the fastest site first of the 16 mirrors. 
There will be no output untill they have all been tracerouted, about 30 
seconds on my connection, YMMV.

This will give lots of detail.  Fastest first.

#!/bin/sh

for i in `jot 16`
        do
                 echo -n "cvsup${i}           "
                 traceroute -n cvsup${i}.freebsd.org 2>&1 | tail -1
        done | sort +7 -n

This will just give the fastes first, with the speed.  The -m 20 means 
limit it to 20 hops, adjust as necessary.

#!/bin/sh

for i in `jot 16`
         do
                 MS=`traceroute -n -m 20 cvsup${i}.freebsd.org 2>&1 |\
                  tail -1 | cut -f5,6 -d" "`
                  echo  " "
                  echo  "cvsup${i}        $MS           "
          done | sort +1 -n


Have fun.





Zack Hobson <zgh+bsd@malfunktion.net>
Sent by: owner-freebsd-stable@FreeBSD.ORG
06/15/2001 11:25 PM

 
        To:     Donn Miller <hackr_d@yahoo.com>
        cc:     freebsd-stable@freebsd.org
        Subject:        Re: Benchmarking CVSup

On Fri, Jun 15, 2001 at 11:05:38PM -0700, Donn Miller wrote:
> --- Chris BeHanna <behanna@zbzoom.net> wrote:
> > Here's a little script to work through them all.  With a modicum of
> > effort, it could be made to just print the hopcounts, but I wasn't
> > that enthusiastic the night I wrote it.
> 
> Actually, it should go from 1->16.  A more compact way to do it would
> be:

Try piping it to tail, that compresses the output nicely:

#!/bin/sh
i=1
while [ $i -le 16 ] ; do
    traceroute cvsup$i.freebsd.org|tail -n 1
    i=`expr $i + 1`
done

This gives you a nice two-line summary of each traceroute, at least it did
on my 4.3-STABLE server.

-zack


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