| From: | Markus Wanner <markus(at)bluegap(dot)ch> |
|---|---|
| To: | Kevin Grittner <Kevin(dot)Grittner(at)wicourts(dot)gov> |
| Cc: | Robert Haas <robertmhaas(at)gmail(dot)com>, Jeff Davis <pgsql(at)j-davis(dot)com>, nicolas(dot)barbier(at)gmail(dot)com, Greg Stark <gsstark(at)mit(dot)edu>, pgsql-hackers(at)postgresql(dot)org, laurenz(dot)albe(at)wien(dot)gv(dot)at |
| Subject: | Re: Serializable Isolation without blocking |
| Date: | 2010-01-08 10:11:34 |
| Message-ID: | 4B4704D6.1000303@bluegap.ch |
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| Lists: | pgsql-hackers |
Hi,
Kevin Grittner wrote:
> As I understand it, Greg's line of thinking is that we should use a
> technique which has never proven practical on a large scale:
> matching database changes against a list of predicate lock
> expressions.
I find that approach to predicate locking pretty interesting. However,
unlike others, it scales with the number of concurrently held locks. And
with the current trend towards multi-multi-core platforms, that might
get worse and worse (as concurrency must increase to efficiently use
these cores).
Regards
Markus Wanner
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