| From: | "Drouvot, Bertrand" <bertranddrouvot(dot)pg(at)gmail(dot)com> |
|---|---|
| To: | "Zhijie Hou (Fujitsu)" <houzj(dot)fnst(at)fujitsu(dot)com>, Bharath Rupireddy <bharath(dot)rupireddyforpostgres(at)gmail(dot)com> |
| Cc: | Andres Freund <andres(at)anarazel(dot)de>, "pgsql-hackers(at)postgresql(dot)org" <pgsql-hackers(at)postgresql(dot)org>, Jeff Davis <pgsql(at)j-davis(dot)com>, Amit Kapila <amit(dot)kapila16(at)gmail(dot)com>, Robert Haas <robertmhaas(at)gmail(dot)com>, Masahiko Sawada <sawada(dot)mshk(at)gmail(dot)com> |
| Subject: | Re: walsender performance regression due to logical decoding on standby changes |
| Date: | 2023-05-15 08:41:12 |
| Message-ID: | 2c7a0c47-4b2c-5898-ee1c-8d99bf14ef8b@gmail.com |
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| Lists: | pgsql-hackers |
Hi,
On 5/15/23 4:19 AM, Zhijie Hou (Fujitsu) wrote:
> On Friday, May 12, 2023 7:58 PM Bharath Rupireddy <bharath(dot)rupireddyforpostgres(at)gmail(dot)com> wrote:
>>
>> On Wed, May 10, 2023 at 3:23 PM Drouvot, Bertrand
>>
>> That's not the case with the attached v2 patch. Please have a look.
>
Thanks for V2! It does look good to me and I like the fact that
WalSndWakeup() does not need to loop on all the Walsenders slot
anymore (for both the physical and logical cases).
> Thanks for updating the patch. I did some simple primary->standby replication test for the
> patch and can see the degradation doesn't happen in the replication after applying it[1].
>
Thanks for the performance regression measurement!
Regards,
--
Bertrand Drouvot
PostgreSQL Contributors Team
RDS Open Source Databases
Amazon Web Services: https://aws.amazon.com
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