public inbox for [email protected]
help / color / mirror / Atom feedFrom: Nathan Bossart <[email protected]>
To: Tom Lane <[email protected]>
Cc: Melih Mutlu <[email protected]>
Cc: Thomas Munro <[email protected]>
Cc: Hayato Kuroda (Fujitsu) <[email protected]>
Cc: [email protected] <[email protected]>
Subject: Re: wake up logical workers after ALTER SUBSCRIPTION
Date: Tue, 13 Dec 2022 16:41:05 -0800
Message-ID: <20221214004105.GA669835@nathanxps13> (raw)
In-Reply-To: <[email protected]>
References: <20221202002130.GA2124877@nathanxps13>
<20221202192101.GB2277157@nathanxps13>
<CAGPVpCTUuKyxB5f3exgDMBRTivbN5uHVkD=YfXmgznrdnwVOQw@mail.gmail.com>
<20221206192551.GA3078082@nathanxps13>
<20221206212954.GA3403597@nathanxps13>
<CAGPVpCTkdaOyBLXB435VXq0RA1cHLFQut7BPm6t8D4dsdiEXZQ@mail.gmail.com>
<20221207181145.GA3698731@nathanxps13>
<[email protected]>
<20221214000145.GA638663@nathanxps13>
<[email protected]>
On Tue, Dec 13, 2022 at 07:20:14PM -0500, Tom Lane wrote:
> I certainly don't think that "wake the apply launcher every 1ms"
> is a sane configuration. Unless I'm missing something basic about
> its responsibilities, it should seldom need to wake at all in
> normal operation.
This parameter appears to control how often the apply launcher starts new
workers. If it starts new workers in a loop iteration, it updates its
last_start_time variable, and it won't start any more workers until another
wal_retrieve_retry_interval has elapsed. If no new workers need to be
started, it only wakes up every 3 minutes.
--
Nathan Bossart
Amazon Web Services: https://aws.amazon.com
view thread (46+ 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], [email protected], [email protected]
Subject: Re: wake up logical workers after ALTER SUBSCRIPTION
In-Reply-To: <20221214004105.GA669835@nathanxps13>
* 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