On Fri, May 23, 2008 5:23 pm, Christopher Browne wrote:
>> case, we have a large cluster with gigabit networking, yet usage is a
>> paltry few megabits/s (so large updates take hours to days to
>> replicate).

> I'm not sure but that maybe something's flakey with your network; that
> would also be an explanation for the problem, and Slony-I can't
> resolve that!

:) fair enough.  Let me rephrase:  I can saturate my network with rsync,
but Slony doesn't seem to follow suit (even bumping SLON_FETCH_DATA_SIZE).
 I do understand, however, that pumping data between nodes isn't the only
processing being done.

I'll say this about Slony though:  the documentation is /comprehensive/. 
I think the only area it's lacking is in problem resolution.

/aside:  The CommandPrompt crew will (apparently) release Mammoth
Replicator as open source soon.  I'm keen to give it a swing to see how
their non-trigger approach performs.  Our system is
excessive-replication-lag intolerant...

Regards
Henry