On 9/13/10 10:26 PM, George Adams wrote:
>
> Hi, all. I'm running BackupPC 3.1.0 on a Linux server (in my home), using it
> to backup my WinXP box (on the same network) via rsync (which is run as a
> service under WinXP via Cygwin).
>
> The process seems to work, but it's really, really slow. Here's what I mean:
>
> Backup# Type Filled Level Start Date Duration/mins Age/days Server Backup Path
> 568 incr no 1 8/25 08:00 428.5 19.6 /backup/Photos/568
> 569 incr no 1 9/11 09:00 171.4 2.6 /backup/Photos/569
> 570 incr no 1 9/12 21:00 156.8 1.1 /backup/Photos/570
>
> As you can see, the last couple of incremental backups of the photos
> directories on my XP box have taken between 2-3 hours, and the full backup
> takes a whopping 7 hours.
>
> TOTAL TOTAL TOTAL EXIST EXIST NEW NEW
> Backup# Type #Files Size/MB MB/sec #Files Size/MB #Files Size/MB
> 568 full 21665 132328.3 5.15 21665 132328.3 1 0.0
> 569 incr 21702 132850.0 12.92 21673 132848.9 29 1.1
> 570 incr 21719 132850.4 14.12 21694 132849.8 80 0.6
>
> Now granted, this is a lot of files - 21,000+ files, 132GB. But even given
> that, are these incredibly long backup durations REALLY to be expected? Even
> worse, the WinXP computer really is almost unusable while this is going on.
> The hard drive is so busy (and rsync so resource-intensive) that other
> applications take forever to launch, run, etc. What I had hoped would be a
> quiet, unobtrusive way to backup the PC during the day actually makes it
> fairly unusable for several hours.
That seems slow, but not completely out of line. If the machines are on all
the
time you would normally want a blackout period set for the times you are
likely
to be working. A couple of things to check: the server needs to hold the
entire directory listing in RAM, so be sure it has enough to avoid swapping.
Also, on the windows side you might have an on-access virus scanner slowing you
down.
--
Les Mikesell
lesmikesell AT gmail DOT com
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