rsync - Nov 2006 - Building file list takes hours,how to improve performance?

Hi there,


I've backed up some files(about 20G,with many subdirectories and files) a
months ago to an USB drive,and I use rsync to check if there are
changes.After the process,I checked the log file and found no update
needed.But the stats said:

Number of files: 61775
Number of files transferred: 0
Total file size: 24169314260 bytes
Total transferred file size: 0 bytes
Literal data: 0 bytes
Matched data: 0 bytes
File list size: 2260510
File list generation time: 8631.470 seconds
File list transfer time: 0.000 seconds
Total bytes sent: 2288918
Total bytes received: 28412
sent 2288918 bytes  received 28412 bytes  133.34 bytes/sec
total size is 24169314260  speedup is 10429.81

That's awful,how to improve file list generation performance?
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On Wed, 2006-11-01 22:01:07 +0800, woo robbin <robbinwooo@gmail.com>
wrote:
> I've backed up some files(about 20G,with many subdirectories and files)
a
> months ago to an USB drive,and I use rsync to check if there are
> changes.After the process,I checked the log file and found no update
> needed.But the stats said:
> 
> Number of files: 61775
> Number of files transferred: 0
> Total file size: 24169314260 bytes
> Total transferred file size: 0 bytes
> Literal data: 0 bytes
> Matched data: 0 bytes
> File list size: 2260510
> File list generation time: 8631.470 seconds
> File list transfer time: 0.000 seconds
Well, the USB stuff tends to be slow. And untuned filesystems are
that, too. If it's ext3, you'd play with the dir_index flag.

MfG, JBG

-- 
      Jan-Benedict Glaw      jbglaw@lug-owl.de              +49-172-7608481
Signature of:           Ich hatte in letzter Zeit ein bi?chen viel Realitycheck.
the second  :               Langsam m?chte ich mal wieder weitertr?umen k?nnen.
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