Re: Quality and Performance

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On Tue, 27 Nov 2007 17:32:49 +0000
Simon Riggs <simon(at)2ndquadrant(dot)com> wrote:

> Maybe we should give each Beta a name, such as "Initial Beta",
> "Performance Beta", "Usability Beta" as a way of encouraging folk to
> focus onto particular aspects of quality at what we consider to be
> appropriate times to do so. Not sure whether thats a good idea, but
> I'd love to hear about ways to include performance as one of the
> essential behaviours of PostgreSQL.
>
> Your thoughts are welcome,

Well I think that we do take performance into account. I agree
that we should *never* have a regression in performance from release
to release, which is what I believe has inspired this thread.

However if you look at a lot of the items that have gone into this
release they were all about performance:

HOT -- has a direct correlation to performance because without it
we vacuum more. Not only more, but in a lot of cases it resolves a
serious PostgreSQL limitation for high velocity tables.

Phantom Xid - less vacuuming

The sequential scan thing Jeff Davis did

The reduced size of the tuple headers

Sincerely,

Joshua D. Drake

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