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Re: optimizing repeated MVCC snapshots - Mailing list pgsql-hackers

From Florian Weimer
Subject Re: optimizing repeated MVCC snapshots
Date
Msg-id 82ehvefdtk.fsf@mid.bfk.de
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In response to optimizing repeated MVCC snapshots  (Robert Haas <robertmhaas@gmail.com>)
Responses Re: optimizing repeated MVCC snapshots  (Robert Haas <robertmhaas@gmail.com>)
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* Robert Haas:

> and (c) architectures (like 32-bit x86) where ordinary 64-bit
> operations aren't atomic but special instructions (cmpxchg8b) can be
> used to get that behavior.

FILD and FIST are atomic, too, and are supported by more
micro-architectures.

--
Florian Weimer                <fweimer@bfk.de>
BFK edv-consulting GmbH       http://www.bfk.de/
Kriegsstraße 100              tel: +49-721-96201-1
D-76133 Karlsruhe             fax: +49-721-96201-99

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