From: Nathan Bossart <nathan@postgresql.org>
To: pgsql-committers@lists.postgresql.org
Subject: pgsql: Avoid function call overhead of pg_popcount() in syslogger.c.
Date: Tue, 02 Apr 2024 15:36:13 +0000
Message-ID: <E1rrgBI-0009Cq-Tu@gemulon.postgresql.org> (raw)
Avoid function call overhead of pg_popcount() in syslogger.c.
Instead of calling the pg_popcount() function for a single byte, we
can look up the value in the pg_number_of_ones array.
Discussion: https://postgr.es/m/20240401221117.GB2362108%40nathanxps13
Branch
------
master
Details
-------
https://git.postgresql.org/pg/commitdiff/4133c1f45c54f0e52b4bb758f67af78951930e43
Modified Files
--------------
src/backend/postmaster/syslogger.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
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To: pgsql-committers@postgresql.org
Cc: nathan@postgresql.org, pgsql-committers@lists.postgresql.org
Subject: Re: pgsql: Avoid function call overhead of pg_popcount() in syslogger.c.
In-Reply-To: <E1rrgBI-0009Cq-Tu@gemulon.postgresql.org>
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