On Tue, 13 Sep 2005, Tim Shimmin wrote:
> On Mon, Sep 12, 2005 at 10:42:23AM -0700, Bryan J. Smith wrote:
> > Bill Kendall <wkendall@xxxxxxx> wrote:
> > > Try the dump this way and see if performance improves:
> > > xfsdump -J -f /dev/nst0 -b 1048576 -d 8192 /raid
> >
> > Agreed. Play with the blocking/buffering options of xfsdump
> > itself.
>
> My 2 cents FWIW.
[...]
Using your tips, I also tested with this:
xfsdump -J -f /dev/nst0 -S -p 300 -b 262144 /raid
At the end, I have:
xfsdump: dump size (non-dir files) : 28364432208 bytes
xfsdump: dump complete: 4643 seconds elapsed
This gives : 6109074 bytes/sec
So the results are almost identical whatever blocksize or number of
dump files are specified to xfsdump...
--
Nicolas
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