2010/3/23 Nicolas Barbier <nicolas.barb...@gmail.com>: > 2010/3/23 Pavel Stehule <pavel.steh...@gmail.com>: > >> 2010/3/23 Takahiro Itagaki <itagaki.takah...@oss.ntt.co.jp>: >> >>> The fundamental issue seems to be in the slow initialization of >>> dictionaries. If so, how about adding a pre-complile tool to convert >>> a dictionary into a binary file, and each backend simply mmap it? >> >> It means loading about 25MB from disc. for every first tsearch query - >> sorry, I don't believe can be good. > > The operating system's VM subsystem should make that a non-problem. > "Loading" is also not the word I would use to indicate what mmap does.
Maybe we can do some manipulation inside memory - I have not any knowledges about mmap. With Simple Allocator we can have a dictionary data as one block. Problems are a pointers, but I believe so can be replaced by offsets. Personally I dislike idea some dictionary precompiler - it is next application for maintaining and maybe not necessary. And still you need a next application for loading. p.s. I able to serialise czech dictionary, because it use only simply regexp. Pavel > > Nicolas > -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
