On Sun, Sep 6, 2015 at 1:51 AM, Marc Mamin <M.Mamin@intershop.de> wrote:
> Have you considered performances for cases where multiple CREATE INDEX are running in parallel?
> One of our typical use case are large daily tables (50-300 Mio rows) with up to 6 index creations
> that start simultaneously.
> Our servers have 40-60 GB RAM , ca. 12 CPUs and we set maintenance mem to 1-2 GB for this.
> If the create index themselves start using parallelism, I guess that we might need to review our workflow...
Not particularly. I imagine that that case would be helped a lot here
(probably more than a simpler case involving only one CREATE INDEX),
because each core would be require fewer main memory accesses overall.
Maybe you can test it and let us know how it goes.
--
Peter Geoghegan
