Heikki Linnakangas wrote:
I am, but I doubt that's it. The response times are dominated by I/O, so any increase in lock contention would hardly show up. And the patch is only adding one GetOldestXmin call every 1000 scanned pages, which is


Sorry, should be "every 100 scanned pages". The argument still holds, though.

--
  Heikki Linnakangas
  EnterpriseDB   http://www.enterprisedb.com

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