I took another look at v2 of my lazy vxid locks patch and realized that it was pretty flaky in a couple of different ways. Here's a version that I think is a bit more robust, but considering the extent of the revisions, it probably needs another round of review from someone before I commit it.
Any review appreciated; I would prefer not to have to wait until October to get this committed, since there is quite a bit of follow-on work that I would like to do as well. FWIW, the performance characteristics are basically identical to the previous versions, AFAICT. -- Robert Haas EnterpriseDB: http://www.enterprisedb.com The Enterprise PostgreSQL Company
lazyvxid-v3.patch
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