Philippe Clérié wrote: > I'm curious to know how fast obnam is for other users. > > My home network is mostly Gigabit Ethernet. Measuring with iperf, the best > speed I get is around 600Mbps, maybe 700Mbps depending on the computers > involved. > > With obnam, speeds are anywhere below 50Mbps. Even with no other traffic on > the network. obnam is heavily influenced by latency between the 2 computers. So using obnam across a transatlantic link will be slow, even if the link is fast. obnam is also not super-fast even when run locally, backing up to a local drive. I have not tried to get to the bottom of that; some of it could be due to gpg overhead, and some to innefficient use of the filesystem. Some quick benchmarks suggest obnam might only be saturating around 20% of the total available disk (or network) bandwidth, under optimal conditions (ie, backup to a SSD). -- see shy jo
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