Re: Getting around the single-threaded syncrepl model?

[Dieter Klünter <dieter@dkluenter.de>]

Am Wed, 25 Nov 2015 11:02:23 +0000
schrieb "Bannister, Mark" <Mark.Bannister@morganstanley.com>:

> Hi Michael,
> 
> > > If we're primarily adding or deleting entire objects, however,
> > > not modifying single attributes, won't delta-syncrepl just fall
> > > back to syncrepl anyway?
> > 
> > Can't you change your modification process to modify entries
> > instead of deleting and re-adding them?
> 
> I didn't say we deleted and re-added stuff.  We will modify if the
> object needs modifying, but most of our operations involve either
> adding brand new objects, or deleting old ones.
> 
> > > And this still doesn't change the fact that I'm now going to have
> > > to spin up 10-20 LDAP replicas on a single machine to get around
> > > the single-threaded replication engine problem.
> > 
> > This is the concept of "replication hubs". You can do this to
> > spread the syncrepl load.
> 
> Ah, "replication hubs", yes.  I'd rather not have to go down this
> route unless I have to, but at the moment it seems there is little
> choice.

You may consider cascading replication, as  demonstrated in test019

-Dieter

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