Bacula-users

Re: [Bacula-users] Rate limiting in bacula?

2009-12-09 17:20:07
Subject: Re: [Bacula-users] Rate limiting in bacula?
From: "James Harper" <james.harper AT bendigoit.com DOT au>
To: "Niklas Hagman - FiberDirekt AB" <niklas.hagman AT fiberdirekt DOT se>, <bacula-users AT lists.sourceforge DOT net>
Date: Thu, 10 Dec 2009 09:15:55 +1100
> 
> Anyone can recommend a application for Microsoft Windows to limit the
> bandwidth? Looking for something that is as invisible as possible for
> the user and only limit the bacula-fd process or port. Freeware or
open
> source of course..
> 

Ideally, from a network architecture point of view, that is where you
would do the rate limiting, but it works almost as well when done on the
receiving end - you just drop the occasional packet to make the sender
think that there is congestion and it lowers the sending speed
accordingly.

With appropriate QoS rules on the border router of the site where the SD
is, you should be able to get the backups using (say) 80% of the idle
bandwidth without noticing a thing, especially on a 20mbit connection
where the per-packet times are really small.

If your border router isn't up to the task or if you really do want to
clamp the SD traffic to a fixed rate, you should still be able to just
do it on the SD too.

James


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