Re: PATCH: decreasing memory needlessly consumed by array_agg
| От | Tom Lane |
|---|---|
| Тема | Re: PATCH: decreasing memory needlessly consumed by array_agg |
| Дата | |
| Msg-id | 1342.1419184851@sss.pgh.pa.us обсуждение исходный текст |
| Ответ на | Re: PATCH: decreasing memory needlessly consumed by array_agg (Tomas Vondra <tv@fuzzy.cz>) |
| Ответы |
Re: PATCH: decreasing memory needlessly consumed by
array_agg
|
| Список | pgsql-hackers |
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?
regards, tom lane
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