[Date Prev][Date Next] [Thread Prev][Thread Next] [Date Index] [Thread Index]

Re: Rsync on servers

otto.wyss@bluewin.ch (Otto Wyss) writes:

> Is this load really a problem? Doesn't a ftp download need about about
> the same amount of load on the server as the rsync? Doesn't an rsync
> download even need less if just halve of the download is actually
> transferred?

FTP just reads bytes off disk and spews them to the network.  This
takes little CPU, and the zero-copy networking people are working at
getting rid of most of that.

Rsync is much more complex, because of the contortions it goes through
to minimize bandwidth used.  Take a look at
http://rsync.samba.org/rsync/tech_report/ for details.

Alan Shutko <ats@acm.org> - In a variety of flavors!
Anything is possible, unless it's not.

Reply to: