| From: | "Bossart, Nathan" <bossartn(at)amazon(dot)com> |
|---|---|
| To: | SATYANARAYANA NARLAPURAM <satyanarlapuram(at)gmail(dot)com>, Bharath Rupireddy <bharath(dot)rupireddyforpostgres(at)gmail(dot)com> |
| Cc: | PostgreSQL Hackers <pgsql-hackers(at)lists(dot)postgresql(dot)org> |
| Subject: | Re: Do we need pre-allocate WAL files during end-of-recovery checkpoint? |
| Date: | 2021-12-06 19:32:40 |
| Message-ID: | 2F433CA6-FD9D-4D38-82BF-541FF48CA7A9@amazon.com |
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| Lists: | pgsql-hackers |
On 12/6/21, 4:54 AM, "Bharath Rupireddy" <bharath(dot)rupireddyforpostgres(at)gmail(dot)com> wrote:
> The function PreallocXlogFiles doesn't get called during
> end-of-recovery checkpoint in CreateCheckPoint, see [1]. The server
> becomes operational after the end-of-recovery checkpoint and may need
> WAL files. However, I'm not sure how beneficial it is going to be if
> the WAL is pre-allocated (as PreallocXlogFiles just allocates only 1
> extra WAL file).
There is another thread for adding more effective WAL pre-allocation
[0] that you might be interested in.
Nathan
[0] https://www.postgresql.org/message-id/flat/20201225200953.jjkrytlrzojbndh5%40alap3.anarazel.de
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