On Wed, Oct 14, 2009 at 12:12 PM, Joseph S <jks at selectacast.net> wrote:
> Well obviously, but my question is why the big pauses after some
> "remoteHelperThread_1_1: allocate line buffers" but not all of them?

Turn on logging and see what's going on.  I notice slowness sometimes.
 The best I've been able to ascertain is that the FETCH on the origin
is taking a long time, or that the COMMIT on the replica is taking a
long time.  I'm betting that's due to the fsync() on the WAL file.

It is such a fast moving target that it is very hard to detect exactly
what is making it slow.  It happens to my application as well, not
just slony, so I don't think it is a slony specific issue.