Re: PATCH: decreasing memory needlessly consumed by array_agg - Mailing list pgsql-hackers

From Jeff Davis
Subject Re: PATCH: decreasing memory needlessly consumed by array_agg
Date
Msg-id 1419838632.24895.87.camel@jeff-desktop
Whole thread Raw
In response to Re: PATCH: decreasing memory needlessly consumed by array_agg  (Tom Lane <tgl@sss.pgh.pa.us>)
List pgsql-hackers
On Sun, 2014-12-21 at 13:00 -0500, Tom Lane wrote:
> Tomas Vondra <tv@fuzzy.cz> writes:
> > i.e. either destroy the whole context if possible, and just free the
> > memory when using a shared memory context. But I'm afraid this would
> > penalize the shared memory context, because that's intended for cases
> > where all the build states coexist in parallel and then at some point
> > are all converted into a result and thrown away. Adding pfree() calls is
> > no improvement here, and just wastes cycles.
> 
> FWIW, I quite dislike the terminology "shared memory context", because
> it sounds too much like it means "a context in shared memory".  I see
> that the patch itself doesn't use that phrase, which is good, but can
> we come up with some other phrase for talking about it?
> 

"Common memory context"?

Regards,Jeff Davis





pgsql-hackers by date:

Previous
From: Dilip kumar
Date:
Subject: Re: TODO : Allow parallel cores to be used by vacuumdb [ WIP ]
Next
From: Jeff Davis
Date:
Subject: Re: PATCH: decreasing memory needlessly consumed by array_agg