Comparison of huge files ineffective?

[Heiko Schlittermann]

Kevin Korb via rsync <rsync at lists.samba.org> (Mi 14 Mär 2018 15:25:56 CET):
> Do not use --checksum.  It has an extremely limited use case.  Normally
> it is much slower than simply re-copying everything.  --checksum means
> checksum every file on both ends (even files that only exist on one end)
> before doing anything else even if doing so causes a timeout failure.
> --checksum is the only part of rsync stupid enough to leave one end idle
> potentially for hours.

They just use --partial --numeric-ids
and have the „feeling“ that the local i/o load stays low while the remote
side has high i/o.

I'll try to  build a reproducer.

    Best regards from Dresden/Germany
    Viele Grüße aus Dresden
    Heiko Schlittermann
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