Re: What is the practical limitation of no multi-threading?
От | Bruce Momjian |
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Тема | Re: What is the practical limitation of no multi-threading? |
Дата | |
Msg-id | 200112120255.fBC2tEr21611@candle.pha.pa.us обсуждение исходный текст |
Ответ на | Re: What is the practical limitation of no multi-threading? ("Robert B. Easter" <reaster@comptechnews.com>) |
Ответы |
Re: What is the practical limitation of no multi-threading?
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Список | pgsql-general |
> Not being multithreaded may only be a big deal if your application connects > and disconnects from the database at high rates. In that situation, such an > application would suffer the poorer performance of multiprocess servers like > Postgres since it is significantly more time consuming to copy the memory > management unit (mmu) state, or at least to load a new program image (the > backend), than with threads which share mmu state and program image. Let me mention that we don't load new executables on backend startup. We merely fork() the postmaster. I just checked the FAQ and it seems pretty clear. Please let me know if there is additional info I should have there. -- 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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