public inbox for [email protected]  

help / color / mirror / Atom feed

From: Michael Paquier <[email protected]>
To: Andres Freund <[email protected]>
Cc: Alexander Lakhin <[email protected]>
Cc: Michael Paquier <[email protected]>
Cc: MARK CALLAGHAN <[email protected]>
Cc: [email protected]
Subject: Re: benchmark results comparing versions 15.2 and 16
Date: Thu, 11 May 2023 13:28:40 +0900
Message-ID: <[email protected]> (raw)
In-Reply-To: <[email protected]>
References: <CAFbpF8N4bVFZ+eyWFj_+fZXZFSayk2kJVtZnouUVKGHudiDrSw@mail.gmail.com>
	<[email protected]>
	<[email protected]>
	<[email protected]>

On Tue, May 09, 2023 at 09:48:24AM -0700, Andres Freund wrote:
> On 2023-05-08 12:11:17 -0700, Andres Freund wrote:
>> I can reproduce a significant regression due to f193883fc of a workload just
>> running
>> SELECT CURRENT_TIMESTAMP;
>> 
>> A single session running it on my workstation via pgbench -Mprepared gets
>> before:
>> tps = 89359.128359 (without initial connection time)
>> after:
>> tps = 83843.585152 (without initial connection time)
>> 
>> Obviously this is an extreme workload, but that nevertheless seems too large
>> to just accept...
> 
> Added an open item for this.

Thanks for the report, I'll come back to it and look at it at the
beginning of next week.  In the worst case, that would mean a revert
of this refactoring, I assume.
--
Michael


Attachments:

  [application/pgp-signature] signature.asc (833B, ../[email protected]/2-signature.asc)
  download

view thread (4+ messages)

reply

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Reply to all the recipients using the --to and --cc options:
  reply via email

  To: [email protected]
  Cc: [email protected], [email protected], [email protected], [email protected], [email protected], [email protected]
  Subject: Re: benchmark results comparing versions 15.2 and 16
  In-Reply-To: <[email protected]>

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

This inbox is served by agora; see mirroring instructions
for how to clone and mirror all data and code used for this inbox