The patch really improves access performance to jsonb. On the
delicious bookmarks I got 5 times better performance.Now jsonb
outperforms json on simple access (slide 12 of pgcon presentation) by
103 times !
Oleg
On Fri, May 30, 2014 at 9:35 AM, Teodor Sigaev <teodor@sigaev.ru> wrote:
> Hi!
>
> jsonb operators ->text, ->>text,->int, ->>int use inefficient methods to
> access to needed field, proportional O(N/2). Attached patch suggests for
> text operators O(log(N)) and for integer - O(1). The fuctions with fast
> access already are existed in current code and are used in contains
> operation, for example. Attached patch uses that functions instead of
> sequentual loop over object/array.
> --
> Teodor Sigaev E-mail: teodor@sigaev.ru
> WWW:
> http://www.sigaev.ru/
>
>
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