public inbox for [email protected]  

help / color / mirror / Atom feed

From: Adrian Klaver <[email protected]>
To: [email protected]
Cc: PostgreSQL General <[email protected]>
Subject: Re: Streaming replica hangs periodically for ~ 1 second - how to diagnose/debug
Date: Fri, 22 Aug 2025 07:33:03 -0700
Message-ID: <[email protected]> (raw)
In-Reply-To: <[email protected]>
References: <[email protected]>
	<[email protected]>
	<[email protected]>
	<[email protected]>
	<[email protected]>
	<[email protected]>
	<[email protected]>
	<[email protected]>
	<[email protected]>
	<[email protected]>
	<[email protected]>

On 8/22/25 05:37, hubert depesz lubaczewski wrote:
> On Thu, Aug 21, 2025 at 11:17:27AM -0700, Adrian Klaver wrote:
>> Have you looked at?:
>> https://www.pgbouncer.org/changelog.html#pgbouncer-124x
>> To see if anything stands out.
>> Then there is:
>> https://www.pgbouncer.org/config.html#max_prepared_statements
>> The below may also be worth looking at:
>> https://github.com/pgbouncer/pgbouncer/pull/1144
>> I can't help thinking that there is a caching issue at stake, though that is
>> just a guess.
> 
> Will check, but we don't use prepared statements, so this doesn't seem
> to be part-of-the-problem.

In your OP there is:

"Every now and then (usually every 3-5 minutes, but not through the whole
day), we see situations where every query suddently takes ~ 1 second.


I'm talkign about "prepare" for preparing statements. binds. also
"discard all".
"

Is that referring to something else?

> 
> Best regards,
> 
> depesz
> 


-- 
Adrian Klaver
[email protected]

view thread (27+ messages)  latest in thread

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]
  Subject: Re: Streaming replica hangs periodically for ~ 1 second - how to diagnose/debug
  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