Luca Ferrari <fluca1...@infinito.it> writes: > Now, what is the .35 in the cost of the bitmap index scan nodes?
If you're going to get picky about second-order cost components, it's time to start reading the source code: http://git.postgresql.org/gitweb/?p=postgresql.git;a=blob;f=src/backend/optimizer/path/costsize.c;h=480c1b7425ce66a02e2e10711359143ea7ffe59c;hb=HEAD#l218 http://git.postgresql.org/gitweb/?p=postgresql.git;a=blob;f=src/backend/utils/adt/selfuncs.c;h=95e46276f0a8911758f4ec02b993193bf55eee15;hb=HEAD#l6087 The short answer though is that this is probably coming from CPU cost components not disk-access components. regards, tom lane -- Sent via pgsql-general mailing list (pgsql-general@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general
