large blocksize for transferring files from one filesystem to another on the same disk?

[Dan Stromberg]

Is there any way of increasing rsync's block transfer size for when you
need to transfer data from one filesystem to another on the same disk?

Using a large blocksize tends to decrease track to track seeks.  If I
put a large dd or something in between two tar's in such a situation, I
see over double the throughput on an AIX system (1M vs 64K).

Thanks.

-- 
Dan Stromberg DCS/NACS/UCI <strombrg at dcs.nac.uci.edu>

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