Re: [BackupPC-users] Is there a speed setting?
2009-08-19 14:33:11
Les Mikesell wrote:
> You still haven't said whether this is the first run where the files are
> actually copied or not - if not you shouldn't expect much network
> activity. How long would it take the target to read all it's files?
> Something like 'time tar -cf - / | cat >/dev/null' would be a reasonable
> test. (Don't do -cf /dev/null with gnutar because it will cheat and not
> read the files.) That would be the fastest an rsync run could possibly
> complete with the --ignore times option even if you don't transfer any
> data or create new files on the server.
This is the initial backup of the server. I am only running 1 session at a
time until I solve this bandwidth problem.
>> Now if you tell me my hardware isn't fast enough, the BackupPC server is
>> a
>> dual Opteron 2.2 Ghz with 8 GB RAM and 24 300GB drives in a 3ware RAID5
>> array, it isn't.
>
> Either end can limit the speed. How many concurrent runs do you do?
> Also, you should expect much faster rates if you have a few large files
> than if you have millions of tiny ones.
I am retrying the same server with --ignore-times but it doesn't seem to
be any faster.
--
Jeremy Mann
jeremy AT biochem.uthscsa DOT edu
University of Texas Health Science Center
Bioinformatics Core Facility
http://www.bioinformatics.uthscsa.edu
Phone: (210) 567-2672
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