Re: Performance Issue when using gin index

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: 谭忠涛 <zhongtao(dot)tan(at)seaboxdata(dot)com>
Cc: pgsql-bugs <pgsql-bugs(at)lists(dot)postgresql(dot)org>
Subject: Re: Performance Issue when using gin index
Date: 2025-01-21 03:01:40
Message-ID: 3265439.1737428500@sss.pgh.pa.us
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"=?utf-8?B?6LCt5b+g5rab?=" <zhongtao(dot)tan(at)seaboxdata(dot)com> writes:
> The performance of creating a gin index before inserting data is different from that of inserting data after creating a gin index.

This isn't terribly surprising. Read

https://www.postgresql.org/docs/current/gin.html#GIN-FAST-UPDATE

There's also useful info in

https://www.postgresql.org/docs/current/gin.html#GIN-TIPS

regards, tom lane

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