Looks like the right time to post this patch. It separates the Buffer LWLocks from the main LW locks, allowing them to have different padding.
Tests showed noticeable/significant performance gain due to reduced false sharing on main LWlocks, though without wasting memory on the buffer LWlocks. -- Simon Riggs http://www.2ndQuadrant.com/ <http://www.2ndquadrant.com/> PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services
separate_buffer_lwlocks.v2.patch
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