I want to
rsync a folder with millions of files from a local directory to another, on a daily basis. The files themselves change very rarely.
I want to reduce the impact on the running server, e.g. CPU time or I/O, so I am using the command below
nice -n19 ionice -c3 rsync -ac --delete /foo /backup/
However, I found that it still causes a lot of CPU spikes and high I/O consumption during the execution of
Is there any better way to complete my goal?