| From: | Peter Eisentraut <peter(dot)eisentraut(at)2ndquadrant(dot)com> |
|---|---|
| To: | "Tsunakawa, Takayuki" <tsunakawa(dot)takay(at)jp(dot)fujitsu(dot)com>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Andres Freund <andres(at)anarazel(dot)de>, 'Simon Riggs' <simon(at)2ndquadrant(dot)com> |
| Cc: | David Rowley <david(dot)rowley(at)2ndquadrant(dot)com>, "pgsql-hackers(at)lists(dot)postgresql(dot)org" <pgsql-hackers(at)lists(dot)postgresql(dot)org> |
| Subject: | Re: Speed up transaction completion faster after many relations are accessed in a transaction |
| Date: | 2019-03-18 19:48:04 |
| Message-ID: | 2bfe70c8-ae84-33f5-184b-073e2f9e50fa@2ndquadrant.com |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-hackers |
On 2019-02-20 07:20, Tsunakawa, Takayuki wrote:
> From: Tom Lane [mailto:tgl(at)sss(dot)pgh(dot)pa(dot)us]
>> Hm. Putting a list header for a purely-local data structure into shared
>> memory seems quite ugly. Isn't there a better place to keep that?
>
> Agreed. I put it in the global variable.
I think there is agreement on the principles of this patch. Perhaps it
could be polished a bit.
Your changes in LOCALLOCK still refer to PGPROC, from your first version
of the patch.
I think the reordering of struct members could be done as a separate
preliminary patch.
Some more documentation in the comment before dlist_head LocalLocks to
explain this whole mechanism would be nice.
You posted a link to some performance numbers, but I didn't see the test
setup explained there. I'd like to get some more information on this
impact of this. Is there an effect with 100 tables, or do you need 100000?
--
Peter Eisentraut http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services
| From | Date | Subject | |
|---|---|---|---|
| Next Message | Alexander Korotkov | 2019-03-18 19:49:46 | Re: jsonpath |
| Previous Message | Nikolay Shaplov | 2019-03-18 19:41:13 | [PATCH] src/test/modules/dummy_index -- way to test reloptions from inside of access method |