Hi there,

> Can anybody suggest some intelligent solutions for doing this? How can I
> speed up rsync / set it to use less CPU? I searched for some solutions, but
> everyone talks about limiting rsync _transfer_ speed, which is hardly the
> issue here - I'm backing up over a cable modem, heh.
> 
> Any help appreciated. Thanks!

I havn't thought too much on your actual problem, but just in case you
hadn't considered it, can you change the backup source to suit your
backup system?  e.g. does your 370,000 files represent
days/weeks/years of information?  Can this be archived by month etc,
so the file count is massively reduced?

I see customers with web developers with little sysadmin skills and
they produce the most enormous trees of never-changing files spanning
days/months/years and backuppc needs to check these files everytime,
which hurts the overrall throughput.

Similarly, have you observed excessive swap in/out on your backuppc
server?  If you strace the rsync process on the remote system, does it
appear to be very 'bursty' in I/O activity, and overall throughput
just looks 'wrong'?

Regards,

Chris Bennett
cgb

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