rsync 10x slower than ditto

Discussion in 'Mac OS X Server, Xserve, and Networking' started by jared_kipe, Jul 11, 2013.

  1. macrumors 68030


    Dec 8, 2003
    I use rsync to do some LAN backups and noticed that it was taking a LONG time on relatively large files (disk images for virtual machines).

    Measuring the network bandwidth with iftop or Activity monitor I was able to see only 3MBps transfer rate using rsync and 30-50MBps when using something like 'ditto -rsrc' to transfer files to an AFP volume.

    Any ideas?

    I've already tried various flags like --inplace. I usually use the '-avec --sparse --delete --force' but I've tried a variety of flags (like taking off c to see if the checksum was the problem). I've never seen more than ~3MBps over hard wired gigabit ethernet.

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