Re: Optimising compactify_tuples() - Mailing list pgsql-hackers

From Thomas Munro
Subject Re: Optimising compactify_tuples()
Date
Msg-id CA+hUKGJRtzbbhVmb83vbCiMRZ4piOAi7HWLCqs=GQ74mUPrP_w@mail.gmail.com
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In response to Re: Optimising compactify_tuples()  (David Rowley <dgrowleyml@gmail.com>)
Responses Re: Optimising compactify_tuples()  (David Rowley <dgrowleyml@gmail.com>)
List pgsql-hackers
On Fri, Sep 11, 2020 at 3:53 AM David Rowley <dgrowleyml@gmail.com> wrote:
> That gets my benchmark down to 60.8 seconds, so 2.2 seconds better than v4b.

. o O ( I wonder if there are opportunities to squeeze some more out
of this with __builtin_prefetch... )

> I've attached v6b and an updated chart showing the results of the 10
> runs I did of it.

One failure seen like this while running check word (cfbot):

#2 0x000000000091f93f in ExceptionalCondition
(conditionName=conditionName@entry=0x987284 "nitems > 0",
errorType=errorType@entry=0x97531d "FailedAssertion",
fileName=fileName@entry=0xa9df0d "bufpage.c",
lineNumber=lineNumber@entry=442) at assert.c:67



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