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Re: increasing the default WAL segment size

Andres Freund <andres@anarazel.de>

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From: Andres Freund <andres@anarazel.de>
To: Robert Haas <robertmhaas@gmail.com>
Cc: Michael Paquier <michael.paquier@gmail.com>, Beena Emerson <memissemerson@gmail.com>, Jim Nasby <Jim.Nasby@bluetreble.com>, "pgsql-hackers@postgresql.org" <pgsql-hackers@postgresql.org>
Date: 2017-01-26T18:34:46Z
Lists: pgsql-hackers 
On 2017-01-26 13:16:13 -0500, Robert Haas wrote:
> > OK, I have done this refactoring effort as attached because I think
> > that's really worth it. And here are the diff numbers:
> >  3 files changed, 113 insertions(+), 162 deletions(-)
> > That's a bit less than what I thought first because of all the
> > singularities of bytea in its output and the way TIMELINE_HISTORY
> > takes advantage of the message level routines. Still for
> > IDENTIFY_SYSTEM, START_REPLICATION and CREATE_REPLICATION_SLOT the
> > gains in readability are here.
> 
> Seems OK to me, but I think I'd want to hear a few other opinions
> before committing it.

Just to be absolutely sure: We're talking about Michael's cleanup patch,
not the thread's original topic?

Andres

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.