Re: [PoC] Non-volatile WAL buffer

On 24/01/2020 10:06, Takashi Menjo wrote:
> I propose "non-volatile WAL buffer," a proof-of-concept new feature.  It
> enables WAL records to be durable without output to WAL segment files by
> residing on persistent memory (PMEM) instead of DRAM.  It improves database
> performance by reducing copies of WAL and shortening the time of write
> transactions.
> 
> I attach the first patchset that can be applied to PostgreSQL 12.0 (refs/
> tags/REL_12_0).  Please see README.nvwal (added by the patch 0003) to use
> the new feature.

I have the same comments on this that I had on the previous patch, see:

https://www.postgresql.org/message-id/2aec6e2a-6a32-0c39-e4e2-aad854543aa8%40iki.fi

- Heikki