| From: | Jeff Davis <pgsql(at)j-davis(dot)com> |
|---|---|
| To: | Peter Geoghegan <pg(at)bowt(dot)ie> |
| Cc: | Heikki Linnakangas <hlinnaka(at)iki(dot)fi>, Tomas Vondra <tomas(dot)vondra(at)2ndquadrant(dot)com>, Taylor Vesely <tvesely(at)pivotal(dot)io>, Adam Lee <ali(at)pivotal(dot)io>, Melanie Plageman <mplageman(at)pivotal(dot)io>, PostgreSQL Hackers <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: Memory-Bounded Hash Aggregation |
| Date: | 2020-02-04 02:24:14 |
| Message-ID: | 8bf8d5f77db49cc1f032b6c7c0cfe0d6da89d64a.camel@j-davis.com |
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| Lists: | pgsql-hackers |
On Mon, 2020-02-03 at 10:29 -0800, Jeff Davis wrote:
> I ended up converting the freelist to a min heap.
>
> Attached is a patch which makes three changes to better support
> HashAgg:
And now I'm attaching another version of the main Hash Aggregation
patch to be applied on top of the logtape.c patch.
Not a lot of changes from the last version; mostly some cleanup and
rebasing. But it's faster now with the logtape.c changes.
Regards,
Jeff Davis
| Attachment | Content-Type | Size |
|---|---|---|
| logtape.patch | text/x-patch | 10.7 KB |
| hashagg-20200203.patch | text/x-patch | 111.2 KB |
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