Speed problem

uwp at dicke-aersche.de uwp at dicke-aersche.de
Wed Nov 13 09:03:01 EST 2002

On Tue, 12 Nov 2002, Wayne Davison wrote:

> On Tue, Nov 12, 2002 at 11:30:28PM +0100, uwp at dicke-aersche.de wrote:
> > And why it tries to get 100% CPU even though there's nothing to do ?
> What do you mean "nothing to do"?  Rsync is creating the new version of
> a changed file which is done both by transferring data over the network
> and by copying matching data from the existing version of the file.
> Just because nothing is being transferred over the link doesn't mean
> nothing is going on.  Or is there some other problem that I missed in
> this discussion?

When recovery on the receiving side started, there's almost nothing to
do for the sending side, it just has to wait until the partial copy
is ready to get data appended. In this time rsync on the sending side eats
95% of CPU time. I would say, that this is not the right behaviour, the
rsync process on the sending side should idle in this time.

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