‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐ On Tuesday, August 24, 2021 9:12 PM, hancooper via rsync <rsync@lists.samba.org> wrote:
> ‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐ > On Tuesday, August 24, 2021 8:25 PM, Kevin Korb via rsync > rsync@lists.samba.org wrote: > > > 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 > > Hi Kevin. What about a single host to another with multiple CPU's ? rsync really needs a lot of CPU power. It is not so much disk-bound (as many conclude against using multiple processes), but cpu-bound. -- Please use reply-all for most replies to avoid omitting the mailing list. To unsubscribe or change options: https://lists.samba.org/mailman/listinfo/rsync Before posting, read: http://www.catb.org/~esr/faqs/smart-questions.html
