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From: Andrey Borodin <[email protected]>
To: Thomas Munro <[email protected]>
Cc: Gilles Darold <[email protected]>
Cc: Tomas Vondra <[email protected]>
Cc: Tomas Vondra <[email protected]>
Cc: Alexander Korotkov <[email protected]>
Cc: Anastasia Lubennikova <[email protected]>
Cc: Daniel Gustafsson <[email protected]>
Cc: Kyotaro Horiguchi <[email protected]>
Cc: pgsql-hackers <[email protected]>
Subject: Re: MultiXact\SLRU buffers configuration
Date: Wed, 7 Apr 2021 15:13:26 +0300
Message-ID: <[email protected]> (raw)
In-Reply-To: <[email protected]>
References: <[email protected]>
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> 7 апр. 2021 г., в 14:44, Andrey Borodin <[email protected]> написал(а):
> 
> Maybe instead of fully associative cache with random replacement we could use 1-associative cache?
> i.e. each page can reside only in one spcific buffer slot. If there's something else - evict it.
> I think this would be as efficient as RR cache. And it's soooo fast.

I thought a bit more and understood that RR is protected from two competing pages in working set, while 1-associative cache is not. So, discard that idea.

Best regards, Andrey Borodin.







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