On Fri, Jun 11, 2004 at 02:53:53PM -0400, Wallace Matthews wrote:
> I am seeing some rather strange behavior with synch of 2 directories on the same
> system using 2.6.2.
>
> The older file is the image of a full backup and is 29Gig in size. The new image is
> a slice of an incremental
> backup and is 101Meg in size.
>
> the command line is:
> time /home/wally/rsync/rsync-2.6.2 -av --rsh=rsh --backup --stats --block-size=<xxx>
> --write-batch=kbup1aaa /test/Kibbutz/Kbup_1.aaa /test/Kibbutz/work
>
> What I am observing in /test/Kibbutz/work is a file .Kbup_1.aaa.AZVyuT that is 35
> Meg in size after an overnight run that has been going on for 14 hours. When I kill
> the job, I get real 817m10.062s and user 814m45.940s sys 7m23.870s.
>
> I have tried this without the --block-size statement and it goes pretty fast but the
> literal data is 104M with no matches.
>
> I have tried it for a variety of --block-size=<xxx> and it always stalls with very
> high user times.
>
> If I make the destination fedor://test/Kibbutz with a copy of the 29G file in the
> destination directory, it takes about 30m of real time and 9m of user time.
>
> It seems to be specific to source and destination being on the same system.
>
> Would either Wayne or Tim give me some insight into what I am doing to screw up
> rsync so badly??
Do you observe the same behavior without "write-batch"?
-chris
>
> I did similar experiments with 2.5.7 in January and didnt see behavior like this,
> but at that time my full backup images were only 100 Meg or so and my incremental
> backups were about 10 Meg.
>
> I was experimenting with building the deltas locally and distributing them with a
> download server for expansion of the remote targets.
>
> wally
>
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