Menjo-san,

On Mon, Feb 17, 2020 at 1:13 PM Takashi Menjo
<takashi.menjou...@hco.ntt.co.jp> wrote:
> I applied my patchset that mmap()-s WAL segments as WAL buffers to 
> refs/tags/REL_12_0, and measured and analyzed its performance with pgbench.  
> Roughly speaking, When I used *SSD and ext4* to store WAL, it was "obviously 
> worse" than the original REL_12_0.
I apologize for not having any opinion on the patches themselves, but
let me point out that it's better to base these patches on HEAD
(master branch) than REL_12_0, because all new code is committed to
the master branch, whereas stable branches such as REL_12_0 only
receive bug fixes.  Do you have any specific reason to be working on
REL_12_0?

Thanks,
Amit


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