rsync - Aug 2011 - rsync pauses

rsync pauses during transfers. That is, while I'm watching the verbose
output, it will run through lots of files and then pause at an arbitrary
point and do nothing for around 3-15 minutes and then it will pick up again.

I'm using both -v and --stats. Why would this be? Is it scanning the
directory?

Both source and destination have rsync 3.0.8 and FreeBSD 8
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I assume it's doing I/O, you can start a strace on the process to see
for sure.  Note that the rsync client usually forks a few times, so
you may want to strace all of them (strace -p X -p Y -p Z), or launch
the command under strace (strace -f CMD ARGS). 

Justin

On Wed, Aug 31, 2011 at 07:09:35PM +0900, David Somers-Harris
wrote:
> rsync pauses during transfers. That is, while I'm watching the verbose
> output, it will run through lots of files and then pause at an arbitrary
> point and do nothing for around 3-15 minutes and then it will pick up
again.
> 
> I'm using both -v and --stats. Why would this be? Is it scanning the
> directory?
> 
> Both source and destination have rsync 3.0.8 and FreeBSD 8