| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
|---|---|
| To: | Thomas Munro <thomas(dot)munro(at)gmail(dot)com> |
| Cc: | Michael Paquier <michael(at)paquier(dot)xyz>, Andrey Borodin <amborodin86(at)gmail(dot)com>, Justin Pryzby <pryzby(at)telsasoft(dot)com>, pgsql-hackers(at)lists(dot)postgresql(dot)org |
| Subject: | Re: Something is wrong with wal_compression |
| Date: | 2023-01-27 03:22:25 |
| Message-ID: | 3256386.1674789745@sss.pgh.pa.us |
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| Lists: | pgsql-hackers |
Thomas Munro <thomas(dot)munro(at)gmail(dot)com> writes:
> On Fri, Jan 27, 2023 at 3:04 PM Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
>> I think we need to get the thing correct first and worry about
>> performance later. What's wrong with simply making pg_xact_status
>> write and flush a record of the XID's existence before returning it?
>> Yeah, it will cost you if you use that function, but not if you don't.
> It would be pg_current_xact_id() that would have to pay the cost of
> the WAL flush, not pg_xact_status() itself,
Right, typo on my part.
regards, tom lane
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