Re: testing HS/SR - 1 vs 2 performance - Mailing list pgsql-hackers

From Tom Lane
Subject Re: testing HS/SR - 1 vs 2 performance
Date
Msg-id 25104.1272406109@sss.pgh.pa.us
Whole thread Raw
In response to Re: testing HS/SR - 1 vs 2 performance  (Simon Riggs <simon@2ndQuadrant.com>)
Responses Re: testing HS/SR - 1 vs 2 performance
List pgsql-hackers
Simon Riggs <simon@2ndQuadrant.com> writes:
> On Tue, 2010-04-27 at 17:24 -0400, Tom Lane wrote:
>> I think we should just lose that test, as well as the variable.

> Yes, though it looks like it is still necessary in creating a valid
> initial state because otherwise we may have xids in KnownAssigned array
> that are already complete.

Huh?  How is a filter as coarse as an oldest-running-XID filter going
to prevent that?  And aren't we initializing from trustworthy data in
ProcArrayApplyRecoveryInfo, anyway?

I still say it's useless.
        regards, tom lane


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