Rsync: Re: patch to enable faster mirroring of large filesyst ems

Dave Dykstra dwd at
Fri Nov 30 06:12:18 EST 2001

On Thu, Nov 29, 2001 at 12:59:00PM -0600, Keating, Tim wrote:
> I was at first, but then removed it. The results were still insufficiently
> fast.
> > Were you using the -c option of rsync?  It sounds like you 
> > were and it's
> > extremely slow.  I knew somebody who once went to 
> > extraordinary lengths to
> > avoid the overhead of -c, making a big patch to rsync to 
> > cache checksums,
> > when all he had to do was not use -c.

23 minutes to check 3200 files is definitely unexpected.  What options did
you end up using?  Normally rsync will only check the modification
timestamps and the sizes of the files on both sides (that is, only a
stat()) and if they match it will not do anything else.

- Dave Dykstra

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