Re: sortsupport for text
От | Peter Geoghegan |
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Тема | Re: sortsupport for text |
Дата | |
Msg-id | CAEYLb_Vt+4RheQUAoGcxNyj+LCozMka+dnvMzmfegPkj8v+mWQ@mail.gmail.com обсуждение исходный текст |
Ответ на | Re: sortsupport for text (Robert Haas <robertmhaas@gmail.com>) |
Ответы |
Re: sortsupport for text
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Список | pgsql-hackers |
On 23 July 2012 16:36, Robert Haas <robertmhaas@gmail.com> wrote: > On Mon, Jul 23, 2012 at 11:34 AM, Peter Geoghegan <peter@2ndquadrant.com> wrote: >>> tss->buflen = 1 << ffs(len1); >> >> I'm sorry, I don't follow you here. What is ffs() ? > > Sorry, fls, not ffs. I always get those mixed up. > > See src/port/fls.c Oh, okay. Since, I infer, we're starting from a buffer-size that's a power-of-two anyway, is there really any advantage in doing this rather than just doubling the buffer size each time? -- Peter Geoghegan http://www.2ndQuadrant.com/ PostgreSQL Development, 24x7 Support, Training and Services
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