Re: Backends stunk in wait event IPC/MessageQueueInternal

From: Justin Pryzby <pryzby(at)telsasoft(dot)com>
To: Japin Li <japinli(at)hotmail(dot)com>
Cc: pgsql-hackers(at)lists(dot)postgresql(dot)org
Subject: Re: Backends stunk in wait event IPC/MessageQueueInternal
Date: 2022-05-13 11:41:19
Message-ID: 20220513114119.GR19626@telsasoft.com
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On Fri, May 13, 2022 at 06:16:23PM +0800, Japin Li wrote:
> I had an incident on my Postgres 14 that queries hung in wait event
> IPC / MessageQueueInternal, MessageQueueReceive. It likes [1],
> however, it doesn't have any discussions.

If the process is still running, or if the problem recurs, I suggest to create
a corefile with gcore, aka gdb generate-core-file. Then, we can look at the
backtrace at our leisure, even if the cluster needed to be restarted right
away.

What minor version of postgres is this, and what OS ?

--
Justin

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