Horton

Re: Changing types of block and chunk sizes in memory contexts

Tom Lane <tgl@sss.pgh.pa.us>

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From: Tom Lane <tgl@sss.pgh.pa.us>
To: Tomas Vondra <tomas.vondra@enterprisedb.com>
Cc: David Rowley <dgrowleyml@gmail.com>, Peter Eisentraut <peter@eisentraut.org>, Melih Mutlu <m.melihmutlu@gmail.com>, pgsql-hackers <pgsql-hackers@postgresql.org>
Date: 2023-06-28T21:56:55Z
Lists: pgsql-hackers 
Tomas Vondra <tomas.vondra@enterprisedb.com> writes:
> ... 4B is tiny compared to what we waste due to the doubling.

Yeah.  I've occasionally wondered if we should rethink aset.c's
"only power-of-2 chunk sizes" rule.  Haven't had the bandwidth
to pursue the idea though.

			regards, tom lane

Commits

  1. Shrink memory contexts struct sizes