[lug] Throttling rsync

[D. Frye]

On Thu, Dec 22, 2005 at 02:52:02PM -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?

Keeping in mind that I have never used it, the "--bwlimit" flag looks
like it will do exactly what you are looking for. You might need a bit
of trial and error to figure out what setting works best for you.

dafr

-- 

D. Frye
dafr AT dafr.us
http://www.dafr.us/dafr