Note: This is approximate and does not apply to the initial scan

When increasing this or using a lower`work_mem` than default, you may also need to increasethe max amount of memoryan iterative scan canuse,which is a multiple of`work_mem` (1 by default)

Specifythe max amount of memorytouse,as a multiple of`work_mem` (1 by default)

SEThnsw.scan_mem_multiplier=2;

You can see when thisis needed by enabling debug messages

You can see whenincreasingthiswill help by enabling debug messages

SET client_min_messages= debug1;