Re: Performance of CLUSTER

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On 06/10/2012 03:20 AM, Mark Thornton wrote:

4. 3980922 rows, 1167MB, 276s
5. 31843368 rows, 9709MB, ~ 10 hours

Just judging based on the difference between these two, it would appear to be from a lot of temp space thrashing. An order of magnitude more rows shouldn't take over 100x longer to cluster, even with GIST. What's your maintenance_work_mem setting?

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Shaun Thomas
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