From: Tom Lane <tgl@sss.pgh.pa.us>
To: Zhu Yang <fairyfar@msn.com>
Cc: pgsql-bugs@lists.postgresql.org <pgsql-bugs@lists.postgresql.org>
Subject: Re: The memory usage is positively correlated with the number of partition tables when pg_get_expr is called.
Date: Wed, 20 Aug 2025 08:09:10 -0400
Message-ID: <989438.1755691750@sss.pgh.pa.us> (raw)
In-Reply-To: <MEWP300MB002272E8DEAD2FCFA14A3518D533A@MEWP300MB0022.AUSP300.PROD.OUTLOOK.COM>
References: <MEWP300MB002272E8DEAD2FCFA14A3518D533A@MEWP300MB0022.AUSP300.PROD.OUTLOOK.COM>
Zhu Yang <fairyfar@msn.com> writes:
> Unreasonable memory usage.
Not at all. You have a session that has accessed 100000 tables.
If you don't want to eat a lot of relcache space, rethink your
schema. (IMV, a table with hundreds or thousands of partitions
is an anti-pattern.)
regards, tom lane
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To: pgsql-bugs@postgresql.org
Cc: tgl@sss.pgh.pa.us, fairyfar@msn.com, pgsql-bugs@lists.postgresql.org
Subject: Re: The memory usage is positively correlated with the number of partition tables when pg_get_expr is called.
In-Reply-To: <989438.1755691750@sss.pgh.pa.us>
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