Re: BUG #15609: synchronous_commit=off insert performance regression with secondary indexes

From: Peter Geoghegan <pg(at)bowt(dot)ie>
To: "Saul, Jean Paolo" <paolo(dot)saul(at)verizonconnect(dot)com>
Cc: Andrew Gierth <andrew(at)tao11(dot)riddles(dot)org(dot)uk>, PostgreSQL mailing lists <pgsql-bugs(at)lists(dot)postgresql(dot)org>
Subject: Re: BUG #15609: synchronous_commit=off insert performance regression with secondary indexes
Date: 2019-02-13 06:51:05
Message-ID: CAH2-Wznca0WL6QA_DacP7YAA4xAXR0xOe=pW+jCi3KPpnJ=0kA@mail.gmail.com
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On Tue, Feb 12, 2019 at 5:48 PM Saul, Jean Paolo
<paolo(dot)saul(at)verizonconnect(dot)com> wrote:
> Does having < four distinct values in the btree index have any known significance wrt to btree performance?

Not that I'm aware of, or have been able to ascertain through testing.

--
Peter Geoghegan

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