rdiff-backup across the network
Tue, 12 Mar 2002 13:59:47 -0000
Hi, I'm considering using rdiff-backup here at work and I'm generally vry
impressed with the concept and ease of use of this script!
It has a very low cpu and memory overhead which is welcome.
There is one thing I was wondering about though, and that is the speed
across the network of rdiff-backup. I am running across a 100mbit switched
LAN, and using rsync, I can acheive a transfer rate of about 1.5 mb/s
(albeit with the CPU consumption going very high.)
I get about about 4-5 mb/min (for actual data transfer speed) using
You did mention that rdiff-backup was slower than rsync, but I did
anticipate such a large factor.
Is this because:
(i) increasing throughput would load the cpu more?
(ii) ssh is a bottleneck? (I think this is unlikely!)
(iii) the rdiff algorithm is set for smaller bandwidths?
I'd love to be able to increase the throughput by a factor of 2-3 if
possible - I have some cpu on both ends to spare and lots of bandwidth. Is
Stephen Tan (Sega Europe sysadmin)