[lug] Throttling rsync

[Andrew GIlmore]

On Thu, 2005-12-22 at 14:52 -0700, Jeff Schroeder wrote:
> Hey all--
> 
> Does anyone know if it's possible to throttle the bandwidth used by 
> rsync between two servers?  I have a backup job that copies several GB 
> of data from one server to another, across the internet.  Although most 
> of the time I'd want backups to proceed lickety-split, in this instance 
> there's no rush and more importantly I'm paying for bandwidth usage at 
> the 95th percentile.  These bursts of traffic lasting an hour or more 
> push my overall bandwidth levels upward, costing me money in 
> surcharges.
> 
> I could probably hack something together using iptables or iproute2-- 
> they could throttle bandwidth on a certain IP or something-- but I 
> don't want to scale back the server as a whole.  It's just this single 
> rsync process that needs to be slowed.
> 
> Any ideas?


>From the rsync man page, off my FC4 system:

       --bwlimit=KBPS          limit I/O bandwidth; KBytes per second

Already handled by the tool itself, what fun!

Andrew