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List:       postgresql-general
Subject:    Re: [HACKERS] Checkpoint cost, looks like it is WAL/CRC
From:       Josh Berkus <josh () agliodbs ! com>
Date:       2005-06-30 21:07:47
Message-ID: 200506301407.48396.josh () agliodbs ! com
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Tom,

> > What I'm confused about is that this shouldn't be anything new for
> > 8.1.  Yet 8.1 has *worse* performance on the STP machines than 8.0
> > does, and it's pretty much entirely due to this check.
>
> That's simply not believable --- better recheck your analysis.  If 8.1
> is worse it's not because of page-dumping, because we are more efficient
> on that than before not less so.  Perhaps there's another issue?

Ach, I want to run head-to-head tests, but the system is down again.  

-- 
--Josh

Josh Berkus
Aglio Database Solutions
San Francisco

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