Speeding up rsync

Kevin Korb kmk at sanitarium.net
Tue Aug 24 20:25:59 UTC 2021

In my experience backing up multiple hosts to a single host can speed
things up.  Especially if using rsync over ssh with multiple CPUs on the
single host.  You would need to do some experimentation to determine the
best number for your hardware and network.  Also, if you exceed that
number you can put more stress on the backup machine lessening the
impact to the hosts being backed up.

On 8/24/21 3:58 PM, hancooper via rsync wrote:
> It makes sense to we to run multiple rsync commands to speed up a backup.
> At work, some have argued that if I sync the data all to the same host,
> there is no advantage
> in parallelization.   Whether you sync 3x 1G in parallel or 1x 3G makes
> no noticeable difference.
> Speed in general does not increase by increasing the number of sync
> processes.
> However, if one want to sync to multiple hosts, the effort may be
> worthwhile.
> What is the current advice about speeding up data transfer ?

	Kevin Korb			Phone:    (407) 252-6853
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