Re: obnam speed
On 10/08/2014 10:04 PM, Joey Hess wrote: 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). Good to know... Thanks! So far, I've not had good experiences over the net. I can only use a 512Kbps uplink (the downlink is sufficient) and it has not worked for me so far. At least, not consistently and reliably. -- Philippe -- The trouble with common sense it that it is so uncommon. Anonymous -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of unsubscribe. Trouble? Contact listmas...@lists.debian.org Archive: https://lists.debian.org/54370545.2050...@gcal.net
obnam speed
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. No SSD's. -- Philippe -- The trouble with common sense it that it is so uncommon. Anonymous -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of unsubscribe. Trouble? Contact listmas...@lists.debian.org Archive: https://lists.debian.org/5435c4d2.2080...@gcal.net
Re: obnam speed
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 signature.asc Description: Digital signature
