Re: PostgreSQL Process memory architecture

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От
Stephen Frost
Тема
Re: PostgreSQL Process memory architecture
Дата
в 12:18:31
Msg-id
20130527121821.GG8597@tamriel.snowman.net
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PostgreSQL Process memory architecture "Ben Zeev, Lior" <lior.ben-zeev@hp.com>
Re: PostgreSQL Process memory architecture Stephen Frost <sfrost@snowman.net>
Re: PostgreSQL Process memory architecture Atri Sharma <atri.jiit@gmail.com>
Re: PostgreSQL Process memory architecture Stephen Frost <sfrost@snowman.net>
Re: PostgreSQL Process memory architecture Atri Sharma <atri.jiit@gmail.com>
Re: PostgreSQL Process memory architecture Stephen Frost <sfrost@snowman.net>
Re: PostgreSQL Process memory architecture Amit Langote <amitlangote09@gmail.com>
Lior,

* Ben Zeev, Lior (lior.ben-zeev@hp.com) wrote:
> Do you know why PostgreSQL store the indexes in memory per process and not in the shared memory?

The disk blocks from an index are not stored per-process, they are kept
in shared memory.  When building an index, PG can only use one process
and so there isn't any point having that be in shared memory.
Thanks,
	Stephen
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