Re: Default shared memory SGML mention
От | Bruce Momjian |
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Тема | Re: Default shared memory SGML mention |
Дата | |
Msg-id | 200105082006.f48K6Qw27411@candle.pha.pa.us обсуждение исходный текст |
Ответ на | Default shared memory SGML mention (Bruce Momjian <pgman@candle.pha.pa.us>) |
Ответы |
Re: Default shared memory SGML mention
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Список | pgsql-docs |
> Bruce Momjian <pgman@candle.pha.pa.us> writes: > >> A little experimentation shows that the present multiplier for -B is > >> about 8350 bytes and the multiplier for -N about 14580 bytes on my > >> system (HPUX), which extrapolates to a fixed base of about 250K plus > >> the -B and -N contributions. In reality I believe the computation > >> is somewhat nonlinear, but that's probably close enough for starters. > > > I have updated the SGML sources to say for default shared memory values: > > > 250 kB + 8192 * buffers or infinity > > How did infinity get into this? And what happened to the -N > contribution? Infinity was always there. The column is labeled "Typical Values". As far as -N, buffers is always 2*N, right, so I figured it was in there already. -- Bruce Momjian | http://candle.pha.pa.us pgman@candle.pha.pa.us | (610) 853-3000 + If your life is a hard drive, | 830 Blythe Avenue + Christ can be your backup. | Drexel Hill, Pennsylvania 19026
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