Beena Emerson wrote: > In the pg_trgm module, within function generate_trgm, the memory for trigrams > is allocated as follows: > > trg = (TRGM *) palloc(TRGMHDRSIZE + sizeof(trgm) * (slen / 2 + 1) *3); > > I have been trying to understand why this is so because it seems to be > allocating more space than that is required.
Maybe it's considering a worst-case for multibyte characteres? I don't really know if trgm supports multibyte, but I assume it does. If it does, then probably the trigrams consist of chars, not bytes. -- Álvaro Herrera http://www.2ndQuadrant.com/ PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
