pg.ddx.io  pgsql-performance@postgresql.org mailing list archive  
help / color / mirror / Atom feed
From: Justin Pryzby <pryzby@telsasoft.com>
To: ldh@laurent-hasson.com
Cc: pgsql-performance@postgresql.org
Subject: Re: An I/O error occurred while sending to the backend (PG 13.4)
Date: Fri, 25 Feb 2022 07:02:13 -0600
Message-ID: <20220225130213.GB9008@telsasoft.com> (raw)
In-Reply-To: <20220224020005.GT9008@telsasoft.com>

On Wed, Feb 23, 2022 at 07:04:15PM -0600, Justin Pryzby wrote:
> And the aforementioned network trace.  You could set a capture filter on TCP
> SYN|RST so it's not absurdly large.  From my notes, it might look like this:
> (tcp[tcpflags]&(tcp-rst|tcp-syn|tcp-fin)!=0)

I'd also add '|| icmp'.  My hunch is that you'll see some ICMP (not "ping")
being sent by an intermediate gateway, resulting in the connection being reset.

-- 
Justin





view thread (25+ messages)  latest in thread

Message-ID: <20220225130213.GB9008@telsasoft.com>
Permalink:  ../20220225130213.GB9008@telsasoft.com/
Also on:    postgresql.org/message-id/20220225130213.GB9008@telsasoft.com

 · 

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: pgsql-performance@postgresql.org
  Cc: pryzby@telsasoft.com, ldh@laurent-hasson.com
  Subject: Re: An I/O error occurred while sending to the backend (PG 13.4)
  In-Reply-To: <20220225130213.GB9008@telsasoft.com>

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

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