public inbox for [email protected]
help / color / mirror / Atom feedFrom: Jeff Davis <[email protected]>
To: Peter Geoghegan <[email protected]>
Cc: [email protected]
Subject: Re: Rework of collation code, extensibility
Date: Fri, 20 Jan 2023 16:34:44 -0800
Message-ID: <[email protected]> (raw)
In-Reply-To: <[email protected]>
References: <[email protected]>
<[email protected]>
<[email protected]>
<CAH2-WzmQ+qe_bemX=S6T_xvZ-cpfDOV06imo3kpmx4m7b6b7jg@mail.gmail.com>
<[email protected]>
<CAH2-WzmDEYEobEjWYpnHPx3F92pxaG1W4TVFdhCMjjHK+voq9g@mail.gmail.com>
<[email protected]>
On Fri, 2023-01-20 at 12:54 -0800, Jeff Davis wrote:
> Both of these are surprising, and I haven't investigated deeply yet.
It's just because autoconf defaults to -O2 and meson to -O3, at least
on my machine. It turns out that, at -O2, master and the refactoring
branch are even; but at -O3, both get faster, and the refactoring pulls
ahead by a few percentage points.
At least that's what's happening for en-US-x-icu on UTF-8 with my test
data set. I didn't see much of a difference in other situations, but I
didn't retest those other situations this time around.
We should still look into why disabling abbreviated keys improves
performance in some cases. Maybe we need a GUC for that?
--
Jeff Davis
PostgreSQL Contributor Team - AWS
view thread (2+ messages) latest in thread
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: [email protected]
Cc: [email protected], [email protected]
Subject: Re: Rework of collation code, extensibility
In-Reply-To: <[email protected]>
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
This inbox is served by agora; see mirroring instructions
for how to clone and mirror all data and code used for this inbox