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

Michael Paquier <michael@paquier.xyz>

From: Michael Paquier <michael@paquier.xyz>

To: Amit Kapila <amit.kapila16@gmail.com>

Cc: Alexander Korotkov <a.korotkov@postgrespro.ru>, Andres Freund <andres@anarazel.de>, konstantin knizhnik <k.knizhnik@postgrespro.ru>, PostgreSQL Hackers <pgsql-hackers@lists.postgresql.org>

Date: 2018-10-01T06:54:06Z

Lists: pgsql-hackers

Commits

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

Allow page lock to conflict among parallel group members.
- 3ba59ccc896e 13.0 landed
Allow relation extension lock to conflict among parallel group members.
- 85f6b49c2c53 13.0 landed
Add assert to ensure that page locks don't participate in deadlock cycle.
- 72e78d831ab5 13.0 landed
Assert that we don't acquire a heavyweight lock on another object after
- 15ef6ff4b985 13.0 landed
Fix unsafe usage of strerror(errno) within ereport().
- 81256cd05f07 11.0 cited

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...
--
Michael