On 09/09/2016 12:43 PM, Daniel Bareiro wrote: > On 09/08/16 22:57, David Christensen wrote: >> My laptop has 802.11 a/b/g WiFi and Fast Ethernet. Wireless data >> transfers are slow (~50 Mbps). Wired is twice as fast (100 Mbps); still >> slow. Newer WiFi (n, ac) should be faster, but only the newest WiFi >> hardware can match or beat Gigabit. > > I think it is reasonable to expect that the wireless transfer rate is > lower than the one obtained in a wired network. But there is a big > difference compared to the ~50 Mpbs you mentioned. The peak obtained > with rsync was 10 Mbps. Maybe the best is to take a metric with iperf, > what do you think?
See the benchmark I just posted for 802.11g WiFi -- dm-crypt -> scp -> dm-crypt, all without AES-NI -- 110341671 bits/second. Yuck. >> My biggest problem with rsync is when I reorganize file/ directory trees >> on my file server; especially big stuff ... I have yet to figure out an >> rsync incantation >> that does the corresponding moves on the destination ... > > If you make a move of files, but always within the same root filesystem > provided to rsync, you might want to consider using --delete for get an > identical image in the source and destination. --delete is a different idea. I'm thinking -y/--fuzzy. David