Re: Faster inserts with mostly-monotonically increasing values
| От | Pavan Deolasee |
|---|---|
| Тема | Re: Faster inserts with mostly-monotonically increasing values |
| Дата | |
| Msg-id | CABOikdNoB5rRac8AgEkVKzCQVUPx+yW96w3x=8KyqbxL2rVg1A@mail.gmail.com обсуждение исходный текст |
| Ответ на | Re: Faster inserts with mostly-monotonically increasing values (Claudio Freire <klaussfreire@gmail.com>) |
| Ответы |
Re: Faster inserts with mostly-monotonically increasing values
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| Список | pgsql-hackers |
On Sat, Mar 10, 2018 at 12:11 AM, Claudio Freire <klaussfreire@gmail.com> wrote:
What if you implement my suggestion?On Fri, Mar 9, 2018 at 2:54 PM, Pavan Deolasee <pavan.deolasee@gmail.com> wrote:
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>
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> So yes, the benefits of the patch go down with higher number of clients, but
> it does not entirely vanish.
That should improve the multi-client case considerably.
Yes, I will try that next - it seems like a good idea. So the idea would be: check if the block is still the rightmost block and the insertion-key is greater than the first key in the page. If those conditions are satisfied, then we do a regular binary search within the page to find the correct location. This might add an overhead of binary search when keys are strictly ordered and a single client is inserting the data. If that becomes a concern, we might be able to look for that special case too and optimise for it too.
Thanks,
Pavan
--
Pavan Deolasee http://www.2ndQuadrant.com/
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