Re: [HACKERS] Moving relation extension locks out of heavyweight lock manager

On Fri, Nov 30, 2018 at 1:17 AM Dmitry Dolgov <9erthalion6(at)gmail(dot)com> wrote:
>
> > On Mon, Oct 1, 2018 at 8:54 AM Michael Paquier <michael(at)paquier(dot)xyz> wrote:
> >
> > On Wed, Jun 06, 2018 at 07:03:47PM +0530, Amit Kapila wrote:
> > > I think Robert's chash stuff [1] might be helpful to reduce the contention
> > > you are seeing.
> >
> > Latest patch available does not apply, so I moved it to next CF. The
> > thread has died a bit as well...
>
> Unfortunately, patch is still needs to be rebased. Could you do this, are there
> any plans about the patch?

I have a plan but it's a future plan. This patch is for parallel
vacuum patch. As I mentioned at that thread[1], I'm focusing on only
parallel index vacuum, which would not require the relation extension
lock improvements for now. Therefore, I want to withdraw this patch
and to reactivate when we need this enhancement.

So I think we can mark it as 'Returned with feedback'.

[1] https://www.postgresql.org/message-id/CAD21AoDhAutvKbQ37Btf4taMVbQaOaSvOpxpLgu814T1-OqYGg%40mail.gmail.com

Regards,

--
Masahiko Sawada
NIPPON TELEGRAPH AND TELEPHONE CORPORATION
NTT Open Source Software Center