Re: random_page_cost configuration parameter
От | Mathias Kunter |
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Тема | Re: random_page_cost configuration parameter |
Дата | |
Msg-id | 6bb6023b-fce3-801d-e799-8111cc317e35@gmail.com обсуждение исходный текст |
Ответ на | Re: random_page_cost configuration parameter (Tom Lane <tgl@sss.pgh.pa.us>) |
Ответы |
Re: random_page_cost configuration parameter
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Список | pgsql-docs |
Am 28.12.21 um 17:03 schrieb Tom Lane: > Mathias Kunter <mathiaskunter@gmail.com> writes: >> Consider the situation >> where the randomly fetched pages are mostly (or even entirely) cached in >> RAM, but where the sequentially fetched pages must be mostly read from >> disk. An example for such a scenario is a database system which uses >> RAM-cached indices. > > I think fooling with effective_cache_size is a better way to model > that situation. The default value of effective_cache_size is 4 GB. Which value should be used instead on a system which only has 4 GB of total RAM, but still uses RAM-cached indices? Thank you very much for the clarification! Best regards Mathias Kunter
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