[sf-lug] rsync question

[Rick Moen]

Quoting Ehud Kaldor (ehud.kaldor at gmail.com):

>    is this supposed to be like that? did i do something wrong in my
>    script?

Appears to be normal.  

http://lwn.net/Articles/400489/ speculates:  'The atop program showed
rsync appears to need three processes: one process that does only disk
reads, one that does only disk writes and one (I assume) control process
that uses little CPU time and does no disk I/O.'

http://www.hpsc.csiro.au/userguides/faq/rsync.php has a different
speculation:  'rsync is a slightly multithreaded copy mechanism and will
spawn multiple threads depending on the size of the file tree being
copied over.'

Please see also:
http://www.backupcentral.com/phpBB2/two-way-mirrors-of-external-mailing-lists-3/rsnapshot-24/rsync-appearing-multiple-times-in-process-list-113096/
http://www.backupcentral.com/phpBB2/two-way-mirrors-of-external-mailing-lists-3/rsnapshot-24/multiple-rsync-processes-for-a-single-backup-point-unexp-103327/