Re: Very long deletion time on a 200 GB database

On 02/23/2012 11:56 AM, Greg Spiegelberg wrote:

> I know there are perils in using ctid but with the LOCK it should be
> safe. This transaction took perhaps 30 minutes and removed 100k rows
> and once the table was VACUUM'd afterward it freed up close to 20 GB
> on the file system.

It took *30 minutes* to delete 100k rows? And 100k rows were using 20GB?
Is that off by an order of magnitude?

Using the ctid is a cute trick, though. :)

--
Shaun Thomas
OptionsHouse | 141 W. Jackson Blvd. | Suite 500 | Chicago IL, 60604
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sthomas@peak6.com

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