| From: | Heikki Linnakangas <hlinnaka(at)iki(dot)fi> |
|---|---|
| To: | Simon Riggs <simon(at)2ndquadrant(dot)com> |
| Cc: | Andres Freund <andres(at)anarazel(dot)de>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Robert Haas <robertmhaas(at)gmail(dot)com>, Pavan Deolasee <pavan(dot)deolasee(at)gmail(dot)com>, Andrew Dunstan <andrew(dot)dunstan(at)2ndquadrant(dot)com>, Michael Paquier <michael(at)paquier(dot)xyz>, Peter Eisentraut <peter(dot)eisentraut(at)2ndquadrant(dot)com>, Michael Paquier <michael(dot)paquier(at)gmail(dot)com>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: Changing WAL Header to reduce contention during ReserveXLogInsertLocation() |
| Date: | 2018-07-09 15:59:48 |
| Message-ID: | 209709d9-a7fe-7d14-f37f-b331695ce339@iki.fi |
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| Lists: | pgsql-hackers |
On 09/07/18 18:57, Simon Riggs wrote:
> On 9 July 2018 at 14:49, Heikki Linnakangas <hlinnaka(at)iki(dot)fi> wrote:
>> I'll mark this as "returned with feedback" in the commitfest. The way
>> forward is to test if we can get the same performance benefit from switching
>> to CMPXCHG16B, and keep the WAL format unchanged. If not, then we can
>> continue discussing the WAL format and the tradeoffs with xl_prev, but let's
>> take the easy way out if we can.
>
> Agreed. Were you working on this? Or was anybody else?
Not me.
- Heikki
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