On Thu, Feb 12, 2026 at 7:19 AM Yasir <[email protected]> wrote: > I recently configured PostgreSQL with a custom blocksize: > > ./configure --with-blocksize=32 > make && make check > OR > make && make check-world > > This produced so many regression failures. I'm wondering, are such failures > typical/expected when altering the default block size? > I came across a related discussion, but it dates back more than a decade. It > would be great to get current perspectives.
Yes, that is known. I suspect there won't be wide interest in custom block sizes until/unless we can change them at run time (as is occasionally proposed, since there are known benefits to using smaller blocks for OLTP and larger blocks for OLAP), and if that ever happens I guess those regression tests will probably still need to run with the traditional size.
