Re: Very bad FTS performance with the Polish config
От | Oleg Bartunov |
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Тема | Re: Very bad FTS performance with the Polish config |
Дата | |
Msg-id | Pine.LNX.4.64.0911181842520.6801@sn.sai.msu.ru обсуждение исходный текст |
Ответ на | Re: Very bad FTS performance with the Polish config (Wojciech Knapik <webmaster@wolniartysci.pl>) |
Ответы |
Re: Very bad FTS performance with the Polish config
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Список | pgsql-hackers |
On Wed, 18 Nov 2009, Wojciech Knapik wrote: > Yes, for 4-word texts the results are similar. > Try that with a longer text and the difference becomes more and more > significant. For the lorem ipsum text, 'polish' is about 4 times slower, than > 'english'. For 5 repetitions of the text, it's 6 times, for 10 repetitions - > 7.5 times... Again, I see nothing unclear here, since dictionaries (as specified in configuration) apply to ALL words in document. The more words in document, the more overhead. You can pass not all document to ts_headline, but just part, to have predicted performance. This is useful in any case. Regards, Oleg _____________________________________________________________ Oleg Bartunov, Research Scientist, Head of AstroNet (www.astronet.ru), Sternberg Astronomical Institute, Moscow University, Russia Internet: oleg@sai.msu.su, http://www.sai.msu.su/~megera/ phone: +007(495)939-16-83, +007(495)939-23-83
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