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Re: increasing the default WAL segment size

Robert Haas <robertmhaas@gmail.com>

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From: Robert Haas <robertmhaas@gmail.com>
To: Beena Emerson <memissemerson@gmail.com>
Cc: Michael Paquier <michael.paquier@gmail.com>, PostgreSQL mailing lists <pgsql-hackers@postgresql.org>
Date: 2017-01-05T15:40:17Z
Lists: pgsql-hackers 
On Thu, Jan 5, 2017 at 6:39 AM, Beena Emerson <memissemerson@gmail.com> wrote:
> This patch only needed the wal_segment_size and hence I made this specific
> command.
> How often and why would we need other parameter values in the replication
> connection?
> Making it a more general command to fetch any parameter can be a separate
> topic. If it gets consensus, maybe it could be done and used here.

I think the idea of supporting SHOW here is better than adding a
special-purpose command just for the WAL size.

-- 
Robert Haas
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company

Commits

Same data as JSON: GET /api/v1/messages/:b64id/commits the thread's linked commits as JSON, with link sources. API reference →

  1. Make WAL segment size configurable at initdb time.

  2. Perform only one ReadControlFile() during startup.

  3. Introduce BYTES unit for GUCs.

  4. Remove useless duplicate inclusions of system header files.

  5. Refactor other replication commands to use DestRemoteSimple.

  6. Add a SHOW command to the replication command language.

  7. Add a new DestReceiver for printing tuples without catalog access.

  8. Support fls().

  9. Extend yesterday's patch making BLCKSZ and RELSEG_SIZE configurable to also

  10. Commit the reasonably uncontroversial parts of J.R. Nield's PITR patch, to

  11. XLOG (also known as WAL -:)) Bootstrap/Startup/Shutdown.

  12. Transaction log manager core code.