Re: Optimizing TransactionIdIsCurrentTransactionId()
| От | Simon Riggs |
|---|---|
| Тема | Re: Optimizing TransactionIdIsCurrentTransactionId() |
| Дата | |
| Msg-id | CANP8+jKWO0aphhSEnbVWEJyUpZjYVC4=You+u6pjP-UxW5jcmg@mail.gmail.com обсуждение исходный текст |
| Ответ на | Re: Optimizing TransactionIdIsCurrentTransactionId() (Tom Lane <tgl@sss.pgh.pa.us>) |
| Ответы |
Re: Optimizing TransactionIdIsCurrentTransactionId()
|
| Список | pgsql-hackers |
On Fri, 20 Dec 2019 at 17:46, Tom Lane <tgl@sss.pgh.pa.us> wrote:
Simon Riggs <simon@2ndquadrant.com> writes:
> On Fri, 20 Dec 2019 at 13:07, Robert Haas <robertmhaas@gmail.com> wrote:
>> With regard to this point, I second Tomas's comments.
> I also agree with Tomas' comments. I am explaining *why* it will be an
> improvement, expanding on my earlier notes.
> This function is called extremely frequently in query processing and is
> fairly efficient. I'm pointing out cases where making it even quicker makes
> sense.
I think the point is that you haven't demonstrated that this particular
patch makes it quicker.
Not yet, but I was trying to agree what an appropriate test would be before running it.
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