Re: vacuum, performance, and MVCC

On 6/23/2006 3:10 PM, Mark Woodward wrote:

> This is NOT an "in-place" update. The whole MVCC strategy of keeping old
> versions around doesn't change. The only thing that does change is one
> level of indirection. Rather than keep references to all versions of all
> rows in indexes, keep only a reference to the first or "key" row of each
> row, and have the first version of a row form the head of a linked list to
> subsequent versions of each row. The list will be in decending order.

Where exactly do you intend to keep all those links (for a table with N 
indexes)?


Jan

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