Re: Reducing overhead for repeat de-TOASTing

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От Teodor Sigaev
Тема Re: Reducing overhead for repeat de-TOASTing
Дата
Msg-id 4857FDAE.7040103@sigaev.ru
обсуждение исходный текст
Ответ на Reducing overhead for repeat de-TOASTing  (Tom Lane <tgl@sss.pgh.pa.us>)
Ответы Re: Reducing overhead for repeat de-TOASTing
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> But we can resolve that by ruling that the required lifetime is the same
> as the value would have had if it'd really been palloc'd --- IOW, until
> the memory context that was current at the time gets deleted or reset.

Many support functions of GiST/GIN live in very short memory context - only for 
one call. So, that cache invalidation technique doesn't give any advantage 
without rearranging this part.

-- 
Teodor Sigaev                                   E-mail: teodor@sigaev.ru
  WWW: http://www.sigaev.ru/

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