If fast 32-bit support is important to you, please also write a comment with details on your use-case and hardware.
I think slightly more elaborate answers would benefit the person asking for this info. Maybe include the PostgreSQL version, system memory and a short description of your application.
I found these in the PostgreSQL Build Farm:
- AIX 7100-05-06-2028 gcc 8.3.0 (32 bit) ppc64 (POWER7) - Debian 7.0 gcc 4.7.2 i686 - Debian Sid gcc recent i386
Source: https://buildfarm.postgresql.org/cgi-bin/show_status.pl
But there might be more that we don't know about.
> Is this on ARM or x86?
Any of the supported platforms: x86, PowerPC, (S/390), SPARC, ARM, MIPS, RISC-V, and PA-RISC
Source: https://www.postgresql.org/docs/current/supported-platforms....
> is it just running 32-bit software on x86-64/AMD64
No, it's when running PostgreSQL on actual 32-bit hardware.