Hi

Thanks to Ernst for replying.

please check what you are backing up. If the majority is lots of
small files then this behavior can be "normal".  I caused a backup
with a direct attached LTO drive to drop to below 600Kbyte/sec by
creating 125 directories with 1000 files of 440 bytes in each
directory. Larger files (Oracle DB) were backed up in the same
session running at +- 14 Mbyte/sec.

I tried to test this by creating a few GB of 100m files on vol0 - the
performance is the same.  I had first tried with a much larger volume
(500 GB) and that was when the problem was first apparent - the backup
took 5 days!  There

df -k /vol/vol1
Filesystem               total       used      avail capacity  Mounted on
/vol/vol1/          595174120KB 516810468KB 25883532KB      87% /vol/vol1/

df -i /vol/vol1
Filesystem               iused      ifree  %iused  Mounted on
/vol/vol1/              596084   20069684     3%   /vol/vol1/

so average file size was 867K, which seems not too small to me.

Kevin

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