Re: Debian server for backups of Windows clients
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
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