Received: from malur.postgresql.org ([217.196.149.56])
	by arkaria.postgresql.org with esmtps  (TLS1.3) tls
 TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384
	(Exim 4.94.2)
	(envelope-from <pgsql-performance-owner+archive@lists.postgresql.org>)
	id 1uU4gC-00F7JJ-PQ
	for pgsql-performance@arkaria.postgresql.org; Tue, 24 Jun 2025 14:31:20 +0000
Received: from localhost ([127.0.0.1] helo=malur.postgresql.org)
	by malur.postgresql.org with esmtp (Exim 4.94.2)
	(envelope-from <pgsql-performance-owner+archive@lists.postgresql.org>)
	id 1uU4g9-00CdX0-UV
	for pgsql-performance@arkaria.postgresql.org; Tue, 24 Jun 2025 14:31:18 +0000
Received: from magus.postgresql.org ([2a02:c0:301:0:ffff::29])
	by malur.postgresql.org with esmtps  (TLS1.3) tls
 TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384
	(Exim 4.94.2)
	(envelope-from <david.g.johnston@gmail.com>)
	id 1uU4g9-00CdWr-K8
	for pgsql-performance@lists.postgresql.org; Tue, 24 Jun 2025 14:31:18 +0000
Received: from mail-oi1-x22a.google.com ([2607:f8b0:4864:20::22a])
	by magus.postgresql.org with esmtps  (TLS1.3) tls
 TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256
	(Exim 4.96)
	(envelope-from <david.g.johnston@gmail.com>)
	id 1uU4g8-003q4o-0M
	for pgsql-performance@lists.postgresql.org;
	Tue, 24 Jun 2025 14:31:17 +0000
Received: by mail-oi1-x22a.google.com with SMTP id
 5614622812f47-40791b6969bso3794117b6e.3
        for <pgsql-performance@lists.postgresql.org>;
 Tue, 24 Jun 2025 07:31:15 -0700 (PDT)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed;
        d=gmail.com; s=20230601; t=1750775474; x=1751380274;
 darn=lists.postgresql.org;
        h=cc:to:subject:message-id:date:from:references:in-reply-to
         :mime-version:from:to:cc:subject:date:message-id:reply-to;
        bh=zer3CPqbHvMwoTHRNfVExIjjKx/wRrCkfe5ockPRhSI=;
        b=naS6AIhxN+VW1dUsA1/CAz9xIZ5cz4zy169dmhUD4W8bpV5+SseJ9QzTHg7lJVFqOG
         9YYWVy0/LSwFGlGlYGh/EPy6plXlA5tWky0JVB94cXHdlU2NCuQPJtnDPqt+BjhF3Q19
         mtPS4VIwJZX6o5YPQgNBF6UC/uqiSlR2ki2MQ6Ffbd2ymCjENLMboy6ENQuI23PvVK6Q
         hdHz8vWF4aFeBCdVGwo62zBbHU36yeNun6tWvrKzptDbO9lQMdR95bY8Pu1DNQBJCGr7
         VBSxl5eC8gqMm3zsg7CZGJdCcBuSzGtQ5JAop6Yx91WH6DTh+B919dgjABnsjxogzsXj
         n8fg==
X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed;
        d=1e100.net; s=20230601; t=1750775474; x=1751380274;
        h=cc:to:subject:message-id:date:from:references:in-reply-to
         :mime-version:x-gm-message-state:from:to:cc:subject:date:message-id
         :reply-to;
        bh=zer3CPqbHvMwoTHRNfVExIjjKx/wRrCkfe5ockPRhSI=;
        b=VI5HaQnqXKacnxsxFDASRIFHjsCbQF3dl37SMflzvD0I7Ot1E+MWMYtz9tUKpXmozN
         X3ChU9qW3KnRNBqzXJnZAJwHa3wdW+UIGJcyRJJ8+6aSDwEf4SzEY+8cdqak7gwJzC2k
         UnK3MaIhdC1cA7H0sxW05wgrz75s9sMPAm/VdDDSEfKumTTXXdEVnZZMM47/5PKs8H5d
         jaBEvJR1+DA3x7ommrb+I+Yay8iwm88ufZPrgztwXMyr39ZWMIesc6bxuzCF2914pars
         1RvVTbYkL1u92V0VoxSnC6Zixd3QZ6sgvPxLr/2YA4wInzwui+NZsctceqoV5JUHzQM+
         ncMA==
X-Gm-Message-State: AOJu0YxDMNC3ooTwNSxkxsClNzAtfKyDTntAVGyS1d70DtFgAiCLCcEn
	Lqltvu1Mp9IBBvc01a3xTfPTk6EEhTojJbWPC7MwWJaNuzcv74KAd3EiDbsWovb/Ts31EF1nC8I
	z3P3jb484g9MTU8eNEM2mBU4pFRYrQ+t1QAe/
X-Gm-Gg: ASbGnct80TnplAw2c0NMM6S7EVTQgHRU3jXSmc3UsUdbU1ZdtNIUBywoBisETDdl6wa
	A2b8dYdFiv+qSB2T7QmP/HrMr71e2JHAgAiGClvLjVeXLyHzrVDpVu0E3jeO6jzNu14Aha40Fb+
	OqKH+UM1sORTxMe/+/84y5NDgyxnVKL8FpUNiNmJLdGKCjMS/m4BUhT2iiUx7hoS0/s6pA6WxlX
	m7m
X-Google-Smtp-Source: 
 AGHT+IHDccvxtzOexPTTW9XoXJjRlI0mzp5tuH9KJLCEgzKK+7H37AMyclnUrVuHxy0wcDOUzUHPzL6ZZ8aL/c+wx4Q=
X-Received: by 2002:a05:6808:140a:b0:40a:526e:5e8a with SMTP id
 5614622812f47-40ac6f528ccmr12332574b6e.1.1750775473855; Tue, 24 Jun 2025
 07:31:13 -0700 (PDT)
MIME-Version: 1.0
Received: by 2002:a05:6802:2f0e:b0:5d1:adff:a37f with HTTP; Tue, 24 Jun 2025
 07:31:12 -0700 (PDT)
In-Reply-To: 
 <CAHgTRfeXEVi=621+NV=y_m=pWiMGCoE42Y_oKRueqbNNjPhHJg@mail.gmail.com>
References: 
 <CAHgTRfeXEVi=621+NV=y_m=pWiMGCoE42Y_oKRueqbNNjPhHJg@mail.gmail.com>
From: "David G. Johnston" <david.g.johnston@gmail.com>
Date: Tue, 24 Jun 2025 07:31:12 -0700
X-Gm-Features: AX0GCFvpYeeAcvJqx8QpxodmNyUBUKwwmmuBrparyZ6q8QtLDfEcScudWO50U-U
Message-ID: 
 <CAKFQuwbOtakyTJs1D0FhyQpGKYkt8VCdueRfJYbvsMFpOFwRQQ@mail.gmail.com>
Subject: Re: many deletes and inserts on pg_class, total rows is 14200 rows in
 "pg_class", any idea why so many inserts/deletes on "pg_class" it's self?
To: James Pang <jamespang886@gmail.com>
Cc: "pgsql-performance@lists.postgresql.org"
 <pgsql-performance@lists.postgresql.org>
Content-Type: multipart/alternative; boundary="00000000000033612a0638522e17"
List-Id: <pgsql-performance.lists.postgresql.org>
List-Help: <https://lists.postgresql.org/manage/>
List-Subscribe: <https://lists.postgresql.org/manage/>
List-Post: <mailto:pgsql-performance@lists.postgresql.org>
List-Owner: <mailto:pgsql-performance-owner@lists.postgresql.org>
List-Archive: <https://www.postgresql.org/list/pgsql-performance>
Archived-At: 
 <https://www.postgresql.org/message-id/CAKFQuwbOtakyTJs1D0FhyQpGKYkt8VCdueRfJYbvsMFpOFwRQQ%40mail.gmail.com>
Precedence: bulk

--00000000000033612a0638522e17
Content-Type: text/plain; charset="UTF-8"

You use temporary tables extensively.
>
>
David J.

--00000000000033612a0638522e17
Content-Type: text/html; charset="UTF-8"

You use temporary tables extensively.<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
</blockquote><div><br></div><div>David J.</div><div><br></div>

--00000000000033612a0638522e17--