Horton

Re: [multithreading] extension compatibility

Robert Haas <robertmhaas@gmail.com>

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From: Robert Haas <robertmhaas@gmail.com>
To: Andres Freund <andres@anarazel.de>
Cc: Heikki Linnakangas <hlinnaka@iki.fi>, Tristan Partin <tristan@partin.io>, "pgsql-hackers@postgresql.org" <pgsql-hackers@postgresql.org>, Thomas Munro <thomas.munro@gmail.com>
Date: 2024-06-06T01:59:42Z
Lists: pgsql-hackers 
On Wed, Jun 5, 2024 at 9:50 PM Andres Freund <andres@anarazel.de> wrote:
> Depending on the architecture / ABI / compiler options it's often not
> meaningfully more expensive to access a thread local variable than a "normal"
> variable.
>
> I think these days it's e.g. more expensive on x86-64 windows, but not
> linux. On arm the overhead of TLS is more noticeable, across platforms,
> afaict.

I mean, to me, this still sounds like we want multithreading to be a
build-time option.

-- 
Robert Haas
EDB: http://www.enterprisedb.com