John Horne wrote:
> Hi,
>
> When I was testing the setup - during the daytime - the backup took about
> one hour. This was with me doing other things on the PC whilst it was going
> on. Again, no problem.
>
> I configured the backup to run overnight via cron on the PC. It was to start
> at 1am. However, it took over 8 hours for the backup to complete! The
> throughput from the log file shows it at about 73KB/s (from last nights
> log). This takes it to about 09:30 by which time I am in work and login. I
> can see the backup is still going, and when it comes to backup the final
> small partition (5MB in size), it does this in a few seconds and with a
> throughput of 712KB/s which is more like the throughput I get during the day!
>
> So why is the backup taking so long? I have checked for overnight cron jobs
> and disabled the cron.daily run (which kicks in at 4am). I ran top every
> 15mins (again via cron) overnight when the backup was not running, and could
> not really see any problem. However the system did seem to be 'busy' during
> the night despite no-one using the system. The %system and %nice values
> seemed high (he says having now deleted the actual log file...:-( ) and
> typically the system only ever got to about 60% idle. I get more than this
> during the day (around 90% right now).
>
> Anyone have any ideas about this?
What is the sun box doing during this time? If it is busy doing other stuff
like itt own backups, I could see a considerable degredation in throughput
happening.
Shot in the dark,
Bret
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