Bandwidth Logging

Matthew Seaman m.seaman at
Sat Mar 29 02:34:27 PST 2003

On Sat, Mar 29, 2003 at 04:09:21AM -0500, Paul Lathrop wrote:
> Forgive me if this is the wrong forum, but Google has left me 
> emptyhanded...
> I am running a webserver with several name-based virtual hosts. I would 
> like to log, but not limit, the outgoing bandwidth used by each virtual 
> host. Can someone point me to a tool that could help me? I can find 
> many methods of bandwidth throttling - but nothing on logging, so I am 
> convinced I'm missing something obvious :-)
> Anyway, thanks ahead of time.

Hmmm... I don't know of any way of generating a number saying that at
time X virtual host was transmitting Y bits/s directly
from apache.

However, you can simply put TransferLog, ErrorLog and/or CustomLog
directives into each of your <VirtualHost></VirtualHost> sections in
your httpd.conf to generate virtual host specific log files.  Or you
can define a LogFormat that includes the %v directive (see, to include the
ServerName into the log data.

Then just use a standard WWW server logfile analysis tool like analog
(, ports: www/analog) to generate graphs of
traffic vs. time.



Dr Matthew J Seaman MA, D.Phil.                       26 The Paddocks
                                                      Savill Way
PGP:         Marlow
Tel: +44 1628 476614                                  Bucks., SL7 1TH UK
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