Re: Latches with weak memory ordering (Re: max_wal_senders must die)

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От Markus Wanner
Тема Re: Latches with weak memory ordering (Re: max_wal_senders must die)
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Msg-id 4CE693DA.3020802@bluegap.ch
обсуждение исходный текст
Ответ на Re: Latches with weak memory ordering (Re: max_wal_senders must die)  (Aidan Van Dyk <aidan@highrise.ca>)
Ответы Re: Latches with weak memory ordering (Re: max_wal_senders must die)  (Tom Lane <tgl@sss.pgh.pa.us>)
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Дерево обсуждения 
On 11/19/2010 03:58 PM, Aidan Van Dyk wrote:
> Well, it's not quite enough just to call into the kernel to serialize
> on "some point of memory", because your point is to make sure that
> *this particular piece of memory* is coherent.

Well, that certainly doesn't apply to full fences, that are not specific
to a particular piece of memory. I'm thinking of 'mfence' on x86_64 or
'mf' on ia64.

Regards

Markus Wanner

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